I need help creating a java gui that draws lines, shapes, characters.pdf
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I need help creating a java gui that draws lines, shapes, characters in response to mouseDragged, mousePressed, keyTyped. The user should be able to control the size using a Jslider, and control the color of all the shapes, lines, and letters using JcolorChooser and be able to control the Font of the letters. Solution import java.awt.*; import java.awt.event.*; import javax.swing.*; public class DPanel extends JFrame { private DObjects panel = new DObjects(); private JPanel BPanel = new JPanel(); private JFrame window = new JFrame(); DPanel(){ buildGUI(); } void buildGUI(){ window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); window.setLayout(new GridLayout(2,2)); window.add(panel); window.add(BPanel); BPanel.setBackground(Color.blue); //define buttons and add to panel JButton rect = new JButton(\"Rect\"); JButton oval = new JButton(\"Oval\"); BPanel.add(rect); BPanel.add(oval); rect.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { panel.setType(1); } }); oval.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { panel.setType(2); } }); window.setVisible(true); window.setSize(1024, 800); } public static void main(String[] args) { new DPanel(); } } import java.awt.*; import java.awt.event.*; import javax.swing.*; class DObjects extends JPanel { public int x1,x2,y1,y2; public int type = 1; public DObjects() { init(); } public void init(){ setBackground(Color.WHITE); addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent m) { x1 = m.getX(); y1 = m.getY(); repaint(); } public void mouseReleased(MouseEvent m) { x2 = m.getX(); y2 = m.getY(); repaint(); } }); addMouseMotionListener(new MouseMotionAdapter() { public void mouseDragged(MouseEvent m) { x2 = m.getX(); y2 = m.getY(); repaint(); } }); } public void setType(int arg){ if(arg == 1){ type = 1; }else if(arg == 2){ type = 2; } } public void paintComponent(Graphics g) { super.paintComponent(g); if(type == 1) { g.drawRect(x1,y1,x2,y2); } else if (type == 2) { g.drawOval(x1,y1,x2,y2); } } }.
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![I need help creating a java gui that draws lines, shapes, characters in response to mouseDragged,
mousePressed, keyTyped. The user should be able to control the size using a Jslider, and control
the color of all the shapes, lines, and letters using JcolorChooser and be able to control the Font
of the letters.
Solution
import java.awt.*; import java.awt.event.*; import javax.swing.*; public class DPanel
extends JFrame { private DObjects panel = new DObjects(); private JPanel BPanel = new
JPanel(); private JFrame window = new JFrame(); DPanel(){ buildGUI(); }
void buildGUI(){ window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.setLayout(new GridLayout(2,2)); window.add(panel); window.add(BPanel);
BPanel.setBackground(Color.blue); //define buttons and add to panel JButton rect
= new JButton("Rect"); JButton oval = new JButton("Oval"); BPanel.add(rect);
BPanel.add(oval); rect.addActionListener(new ActionListener() { public void
actionPerformed(ActionEvent e) { panel.setType(1); } });
oval.addActionListener(new ActionListener() { public void
actionPerformed(ActionEvent e) { panel.setType(2); } });
window.setVisible(true); window.setSize(1024, 800); } public static void
main(String[] args) { new DPanel(); } } import java.awt.*; import
java.awt.event.*; import javax.swing.*; class DObjects extends JPanel { public int
x1,x2,y1,y2; public int type = 1; public DObjects() { init(); } public void init(){
setBackground(Color.WHITE); addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent m) { x1 = m.getX(); y1 =
m.getY(); repaint(); } public void mouseReleased(MouseEvent m)
{ x2 = m.getX(); y2 = m.getY(); repaint(); } });
addMouseMotionListener(new MouseMotionAdapter() { public void
mouseDragged(MouseEvent m) { x2 = m.getX(); y2 =
m.getY(); repaint(); } }); } public void setType(int arg){
if(arg == 1){ type = 1; }else if(arg == 2){ type = 2; } } public void
paintComponent(Graphics g) { super.paintComponent(g); if(type == 1) {
g.drawRect(x1,y1,x2,y2); } else if (type == 2) {
g.drawOval(x1,y1,x2,y2); } } }](https://image.slidesharecdn.com/ineedhelpcreatingajavaguithatdrawslinesshapescharacters-230709050330-91deaa7d/85/I-need-help-creating-a-java-gui-that-draws-lines-shapes-characters-pdf-1-320.jpg)
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import java.awt.Color;import java.awt.Insets;import java.awt.Con.pdf
import java.awt.Color;
import java.awt.Insets;
import java.awt.Container;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import javax.swing.JMenu;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JTextArea;
import javax.swing.JScrollBar;
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/*
*Class Steganography_View
*/
public class Steganography_View extends JFrame
{
//size variables for window
private static int WIDTH = 500;
private static int HEIGHT = 400;
//elements for JPanel
private JTextArea input;
private JScrollBar scroll,scroll2;
private JButton encodeButton,decodeButton;
private JLabel image_input;
//elements for Menu
private JMenu file;
private JMenuItem encode;
private JMenuItem decode;
private JMenuItem exit;
/*
*Constructor for Steganography_View class
*@param name Used to set the title on the JFrame
*/
public Steganography_View(String name)
{
//set the title of the JFrame
super(name);
//Menubar
JMenuBar menu = new JMenuBar();
JMenu file = new JMenu(\"File\"); file.setMnemonic(\'F\');
encode = new JMenuItem(\"Encode\"); encode.setMnemonic(\'E\');
file.add(encode);
decode = new JMenuItem(\"Decode\"); decode.setMnemonic(\'D\');
file.add(decode);
file.addSeparator();
exit = new JMenuItem(\"Exit\"); exit.setMnemonic(\'x\'); file.add(exit);
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setJMenuBar(menu);
// display rules
setResizable(true);//allow window to be resized: true?false
setBackground(Color.lightGray); /background color of window:
Color(int,int,int) setLocation(100,100); //location on the screen to display
window
setDefaultCloseOperation(EXIT_ON_CLOSE);//what to do on close operation: exit,
do_nothing, etc
setSize(WIDTH,HEIGHT); //set the size of the window
setVisible(true); //show the window: true?false
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*@return The menu item \'Encode\'
*/
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}
/*
*@return The menu item \'Decode\'
*/
public JMenuItem getDecode() { return decode;
}
/*
*@return The menu item \'Exit\'
*/
public JMenuItem getExit() { return
exit; }
/*
*@return The TextArea containing the text to encode
*/
public JTextArea getText() { return
input; }
/*
*@return The JLabel containing the image to decode text from
*/
public JLabel getImageInput() { return image_input;
}
/*
*@return The JPanel displaying the Encode View
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public JPanel getTextPanel() { return new Text_Panel(); }
/*
*@return The JPanel displaying the Decode View
*/
public JPanel getImagePanel() { return new Image_Panel(); }
/*
*@return The Encode button
*/
public JButton getEButton() { return encodeButton; }
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*@return The Decode button
*/
public JButton getDButton() { return decodeButton; }
/*
*Class Text_Panel
*/
private class Text_Panel extends JPanel
{
/*
*Constructor to enter text to be encoded
*/
public Text_Panel()
{
//setup GridBagLayout
GridBagLayout layout = new GridBagLayout();
GridBagConstraints l.
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Why am I getting an out of memory error and no window of my .pdf
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code starts here:
package slidePuzzle;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.image.BufferedImage;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.util.ArrayList;
import java.util.Collections;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class Game extends JFrame {
// declare variables, arrays, and constants
private Buttons emptyButton;
private ArrayList<Buttons> buttons;
private ArrayList<Point> answer;
private final int TOTAL_BUTTONS = 12;
private final int TOTAL_WIDTH = 400;
private JPanel panel;
private Image img;
private BufferedImage src;
private BufferedImage mod;
private int width;
private int height;
// default constructor
public Game() {
// call initializer
initializeInterface();
}
private void initializeInterface() {
ArrayList<Point> answer = new ArrayList<Point>();
ArrayList<Buttons> buttons = new ArrayList<Buttons>();
JPanel panel = new JPanel();
panel.setBorder(BorderFactory.createLineBorder(Color.black));
panel.setLayout(new GridLayout(4, 3, 0, 0));
for (int x = 0; x < 4; x++) {
for (int y = 0; y < 3; y++) {
answer.add(new Point(x, y));
}
}
try {
src = loadImg();
int height = modifyHeight(src.getWidth(), src.getHeight());
mod = resizeImg(src, TOTAL_WIDTH, height, BufferedImage.TYPE_INT_ARGB);
}
catch (IOException exception) {
JOptionPane.showMessageDialog(this, "Image is unable to be rendered.", "Error",
JOptionPane.ERROR_MESSAGE);
}
height = mod.getHeight(null);
width = mod.getWidth(null);
for (int x = 0; x < 4; x++) {
for (int y = 0; y <3; y++) {
img = createImage(new FilteredImageSource(mod.getSource(),
new CropImageFilter(x * width / 3, y * height / 4, (width / 3), height / 4)));
Buttons button = new Buttons(img);
button.putClientProperty("position", new Point(x, y));
if (x == 3 && y == 2) {
emptyButton = new Buttons();
emptyButton.setBorderPainted(false);
emptyButton.setContentAreaFilled(false);
emptyButton.setEmptyButton();
emptyButton.putClientProperty("position", new Point(x, y));
} else {
buttons.add(button);
}
}
}
Collections.shuffle(buttons);
buttons.add(emptyButton);
for (int z = 0; z < TOTAL_BUTTONS; z++) {
Buttons button = buttons.get(z);
panel.add(button);
button.setBorder(BorderFactory.createLineBorder(Color.black));
button.addActionListener(new Click());
}
JFrame frame = new JFrame("Tile Slider");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new Game());
frame.pack();
frame.setVisible(true);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
}
private BufferedImage loadImg() throws IOException {
BufferedImage bufferedImage = ImageIO.read(new File("src/pond.jpg"));
return bufferedImage;
}
private BufferedImage resizeImg(BufferedImage natural, int width, int height, int type) {
BufferedImage adjustedImg = new BufferedImage(width, height, type);
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import java.awt.Color;import java.awt.Insets;import java.awt.Con.pdf
import java.awt.Color;
import java.awt.Insets;
import java.awt.Container;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import javax.swing.JMenu;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JTextArea;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.BorderFactory;
/*
*Class Steganography_View
*/
public class Steganography_View extends JFrame
{
//size variables for window
private static int WIDTH = 500;
private static int HEIGHT = 400;
//elements for JPanel
private JTextArea input;
private JScrollBar scroll,scroll2;
private JButton encodeButton,decodeButton;
private JLabel image_input;
//elements for Menu
private JMenu file;
private JMenuItem encode;
private JMenuItem decode;
private JMenuItem exit;
/*
*Constructor for Steganography_View class
*@param name Used to set the title on the JFrame
*/
public Steganography_View(String name)
{
//set the title of the JFrame
super(name);
//Menubar
JMenuBar menu = new JMenuBar();
JMenu file = new JMenu(\"File\"); file.setMnemonic(\'F\');
encode = new JMenuItem(\"Encode\"); encode.setMnemonic(\'E\');
file.add(encode);
decode = new JMenuItem(\"Decode\"); decode.setMnemonic(\'D\');
file.add(decode);
file.addSeparator();
exit = new JMenuItem(\"Exit\"); exit.setMnemonic(\'x\'); file.add(exit);
menu.add(file);
setJMenuBar(menu);
// display rules
setResizable(true);//allow window to be resized: true?false
setBackground(Color.lightGray); /background color of window:
Color(int,int,int) setLocation(100,100); //location on the screen to display
window
setDefaultCloseOperation(EXIT_ON_CLOSE);//what to do on close operation: exit,
do_nothing, etc
setSize(WIDTH,HEIGHT); //set the size of the window
setVisible(true); //show the window: true?false
}
/*
*@return The menu item \'Encode\'
*/
public JMenuItem getEncode() { return encode;
}
/*
*@return The menu item \'Decode\'
*/
public JMenuItem getDecode() { return decode;
}
/*
*@return The menu item \'Exit\'
*/
public JMenuItem getExit() { return
exit; }
/*
*@return The TextArea containing the text to encode
*/
public JTextArea getText() { return
input; }
/*
*@return The JLabel containing the image to decode text from
*/
public JLabel getImageInput() { return image_input;
}
/*
*@return The JPanel displaying the Encode View
*/
public JPanel getTextPanel() { return new Text_Panel(); }
/*
*@return The JPanel displaying the Decode View
*/
public JPanel getImagePanel() { return new Image_Panel(); }
/*
*@return The Encode button
*/
public JButton getEButton() { return encodeButton; }
/*
*@return The Decode button
*/
public JButton getDButton() { return decodeButton; }
/*
*Class Text_Panel
*/
private class Text_Panel extends JPanel
{
/*
*Constructor to enter text to be encoded
*/
public Text_Panel()
{
//setup GridBagLayout
GridBagLayout layout = new GridBagLayout();
GridBagConstraints l.
1) Write a shortsnippetofcodethatcreates a J Panel objectcalled p1, .pdf
1. The document provides 5 code snippets that demonstrate different Java Swing GUI components: 1) A JPanel with a titled border, 2) Key listener for arrow keys, 3) Radio buttons panel, 4) Adding a custom GUI class to a JFrame, 5) Slider with major and minor ticks.
2. Each code snippet includes comments to explain what the code is demonstrating and includes the necessary import statements and code to setup and display the GUI components in a JFrame.
3. The solutions provide working code examples to demonstrate and test each of the GUI components described in the requirements.
Why am I getting an out of memory error and no window of my .pdf
Why am I getting an out of memory error and no window of my application is appearing?
code starts here:
package slidePuzzle;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.image.BufferedImage;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.util.ArrayList;
import java.util.Collections;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class Game extends JFrame {
// declare variables, arrays, and constants
private Buttons emptyButton;
private ArrayList<Buttons> buttons;
private ArrayList<Point> answer;
private final int TOTAL_BUTTONS = 12;
private final int TOTAL_WIDTH = 400;
private JPanel panel;
private Image img;
private BufferedImage src;
private BufferedImage mod;
private int width;
private int height;
// default constructor
public Game() {
// call initializer
initializeInterface();
}
private void initializeInterface() {
ArrayList<Point> answer = new ArrayList<Point>();
ArrayList<Buttons> buttons = new ArrayList<Buttons>();
JPanel panel = new JPanel();
panel.setBorder(BorderFactory.createLineBorder(Color.black));
panel.setLayout(new GridLayout(4, 3, 0, 0));
for (int x = 0; x < 4; x++) {
for (int y = 0; y < 3; y++) {
answer.add(new Point(x, y));
}
}
try {
src = loadImg();
int height = modifyHeight(src.getWidth(), src.getHeight());
mod = resizeImg(src, TOTAL_WIDTH, height, BufferedImage.TYPE_INT_ARGB);
}
catch (IOException exception) {
JOptionPane.showMessageDialog(this, "Image is unable to be rendered.", "Error",
JOptionPane.ERROR_MESSAGE);
}
height = mod.getHeight(null);
width = mod.getWidth(null);
for (int x = 0; x < 4; x++) {
for (int y = 0; y <3; y++) {
img = createImage(new FilteredImageSource(mod.getSource(),
new CropImageFilter(x * width / 3, y * height / 4, (width / 3), height / 4)));
Buttons button = new Buttons(img);
button.putClientProperty("position", new Point(x, y));
if (x == 3 && y == 2) {
emptyButton = new Buttons();
emptyButton.setBorderPainted(false);
emptyButton.setContentAreaFilled(false);
emptyButton.setEmptyButton();
emptyButton.putClientProperty("position", new Point(x, y));
} else {
buttons.add(button);
}
}
}
Collections.shuffle(buttons);
buttons.add(emptyButton);
for (int z = 0; z < TOTAL_BUTTONS; z++) {
Buttons button = buttons.get(z);
panel.add(button);
button.setBorder(BorderFactory.createLineBorder(Color.black));
button.addActionListener(new Click());
}
JFrame frame = new JFrame("Tile Slider");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new Game());
frame.pack();
frame.setVisible(true);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
}
private BufferedImage loadImg() throws IOException {
BufferedImage bufferedImage = ImageIO.read(new File("src/pond.jpg"));
return bufferedImage;
}
private BufferedImage resizeImg(BufferedImage natural, int width, int height, int type) {
BufferedImage adjustedImg = new BufferedImage(width, height, type);
Graphics2D graphi.
swings.pptx
Swing is a GUI widget toolkit for Java that is used to build window-based applications. It is built on top of the Abstract Window Toolkit (AWT) and provides a more sophisticated set of GUI components than AWT. Swing components are lightweight since they are written entirely in Java without dependencies on platform-specific implementations. It also supports pluggable look and feels so that applications can have different styles without recompilation.
Task Write a Java program to implement a simple graphics editor tha.pdf
Task: Write a Java program to implement a simple graphics editor that can be used to draw a
Pythagoras. The editor has a pull-down menu on top of the screen, with 2 buttons: \"Pythagoras\"
and \"Quit\". 1) When the user selects \"Pythagoras\", he/she can draw a tree of Pythagoras on
the screen. 2) The editor terminates/quits execution if the user selects \"Quit\" from the pulldown
menu. 3) The editor has a horizontal and a vertical sliding bar that when slided, moves the tree
on the canvas accordingly.
Solution
HOpe this will help--
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
public class MenuExp extends JFrame {
public MenuExp() {
setTitle(\"Menu Example\");
setSize(150, 150);
JSlider framesPerSecond = new JSlider(JSlider.VERTICAL,FPS_MIN, FPS_MAX,
FPS_INIT);
framesPerSecond.addChangeListener(this);
JSlider framesPerSecond1= new JSlider(JSlider.HORIZONTAL,FPS_MIN, FPS_MAX,
FPS_INIT);
framesPerSecond1.addChangeListener(this);
// Creates a menubar for a JFrame
JMenuBar menuBar = new JMenuBar();
// Add the menubar to the frame
setJMenuBar(menuBar);
// Define and add two drop down menu to the menubar
JMenu fileMenu = new JMenu(\"Process\");
menuBar.add(fileMenu);
// Create and add simple menu item to one of the drop down menu
JMenuItem newAction = new JMenuItem(\"Pythagoras\");
JMenuItem openAction = new JMenuItem(\"Quit\");
fileMenu.add(newAction);
fileMenu.add(openAction);
newAction.addActionListner(new PythagorusListener());
openAction.addActionListner(new CloseListener());
// Add a listener to the New menu item. actionPerformed() method will
// invoked, if user triggred this menu item
newAction.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
System.out.println(\"You have clicked on the new action\");
}
});
}
public static void main(String[] args) {
MenuExp me = new MenuExp();
me.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
me.setVisible(true);
}
}
public class CloseListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
//DO SOMETHING
System.exit(0);
}
}
public class PythagorusListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
setSize(900, 900);
setTitle(\"Pythagoras tree\");
add(new Draw(n));
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
}
class Draw extends JComponent {
private int height = 800;
private int width = 800;
private int steps;
public Draw(int n) {
steps = n;
Dimension d = new Dimension(width, height);
setMinimumSize(d);
setPreferredSize(d);
setMaximumSize(d);
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.white);
g.fillRect(0, 0, width, height);
g.setColor(Color.black);
int x1, x2, x3, y1, y2, y3;
int base = width/7;
x1 = (width/2)-(base/2);
x2 = (width/2)+(base/2);
x3 = w.
Graphical User Components Part 2
This document describes the contents of Chapter 14 - Graphical User Components Part 2 from a textbook on Java programming. It covers advanced GUI components like text areas, sliders, menus; multiple document interfaces; and advanced layout managers. It includes code examples for customizing JPanels, creating self-contained panels that handle their own events, using JSliders to control properties of other components, and more. The chapter aims to teach programming graphical user interfaces with Swing components in greater depth.
Chap1 1 1
The document discusses Java GUI components from the Abstract Window Toolkit (AWT) and Swing toolkit. It defines AWT as a set of APIs used to create GUI objects like buttons and windows. It describes common AWT containers like Frame, Panel, Dialog and Applet. It then introduces Swing as an enhanced GUI toolkit and lists some common Swing components in packages like javax.swing. The document provides examples of creating and using common Swing components like JFrame, JLabel, JButton, JCheckBox.
Chap1 1.1
The document discusses Java GUI components from the Abstract Window Toolkit (AWT) and Swing toolkit. It defines AWT as a set of APIs used to create GUI objects like buttons and windows. It describes common AWT containers like Frame, Panel, Dialog and Applet. It then introduces Swing as an enhanced GUI toolkit and lists some common Swing components in packages like javax.swing. The document provides examples of creating and using common Swing components like JFrame, JLabel, JButton, JCheckBox.
Md10 building java gu is
The document describes how to build graphical user interfaces (GUIs) in Java using containers, components, and layout managers. It defines key terms like containers, components, and layout managers. It provides examples of using common layout managers like FlowLayout, BorderLayout, GridLayout, and CardLayout to position components within containers. It also demonstrates how to add components to containers and control their visibility, size, and position.
Whenever I run my application my Game appears with the pict.pdf
Whenever I run my application, my Game appears with the picture cut up and shuffled. Whenever
I click a button to move the tiles, I get this error:
Cannot invoke "javax.swing.JPanel.removeAll()" because "this.this$0.panel" is null
How do I fix this?
code starts here:
package slidePuzzle;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.image.BufferedImage;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.util.ArrayList;
import java.util.Collections;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class Game extends JFrame {
// declare variables, arrays, and constants
private Buttons emptyButton;
private ArrayList<Buttons> buttons;
private ArrayList<Point> answer;
private final int TOTAL_BUTTONS = 12;
private final int TOTAL_WIDTH = 400;
private JPanel panel;
private Image img;
private BufferedImage src;
private BufferedImage mod;
private int width;
private int height;
// default constructor
public Game() {
// call initializer
initializeInterface();
}
private void initializeInterface() {
answer = new ArrayList<Point>();
buttons = new ArrayList<Buttons>();
JPanel panel = new JPanel();
panel.setBorder(BorderFactory.createLineBorder(Color.black));
panel.setLayout(new GridLayout(4, 3, 0, 0));
for (int x = 0; x < 4; x++) {
for (int y = 0; y < 3; y++) {
answer.add(new Point(x, y));
}
}
try {
src = loadImg();
int height = modifyHeight(src.getWidth(), src.getHeight());
mod = resizeImg(src, TOTAL_WIDTH, height, BufferedImage.TYPE_INT_ARGB);
}
catch (IOException exception) {
JOptionPane.showMessageDialog(this, "Image is unable to be rendered.", "Error",
JOptionPane.ERROR_MESSAGE);
}
height = mod.getHeight(null);
width = mod.getWidth(null);
for (int x = 0; x < 4; x++) {
for (int y = 0; y <3; y++) {
img = createImage(new FilteredImageSource(mod.getSource(),
new CropImageFilter(x * width / 3, y * height / 4, (width / 3), height / 4)));
Buttons button = new Buttons(img);
button.putClientProperty("position", new Point(x, y));
if (x == 3 && y == 2) {
emptyButton = new Buttons();
emptyButton.setBorderPainted(false);
emptyButton.setContentAreaFilled(false);
emptyButton.setEmptyButton();
emptyButton.putClientProperty("position", new Point(x, y));
} else {
buttons.add(button);
}
}
}
Collections.shuffle(buttons);
buttons.add(emptyButton);
for (int z = 0; z < TOTAL_BUTTONS; z++) {
Buttons button = buttons.get(z);
panel.add(button);
button.setBorder(BorderFactory.createLineBorder(Color.black));
button.addActionListener(new Click());
}
JFrame frame = new JFrame("Tile Slider");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new Game());
frame.pack();
frame.setVisible(true);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
}
private BufferedImage loadImg() throws IOException {
BufferedImage bufferedImage = ImageIO.read(new File("src/pond.jpg"));
return bufferedImage;
}
private BufferedImage resizeImg(BufferedImage n.
step by step to write a gnome-shell extension
The document provides an introduction to writing GNOME shell extensions using JavaScript. It discusses the GNOME shell architecture including the GNOME shell core written in C, GObject Introspection for accessing the core from JavaScript, and GNOME shell widgets that can be used from JavaScript extensions. It provides steps for getting started with a basic "Hello World" extension, including creating the extension, restarting GNOME shell, and using the Looking Glass tool to debug. Examples of using global variables and the Main object are also presented.
Write a program whose source file is named UnitProgl.java that do.pdf
Write a program whose source file is named \"UnitProgl.java\" that does the following: Creates
a frame with a GridLayout Manager Creates two panels and adds them to the frame, stacked one
over the other. In each panel creates three buttons, side by side. The buttons should be labeled
\"Button 1\", \"Button 2\", \"Button 3\", \"Button 4\", \"Button 5\" and \"Button 6\". Displays this
GUI when run. The only buttons that actually works will be the buttons on the window title bar:
minimize, maximize and the exit button in the upper right hand corner of the programs window.
Part 2 - Event Driven Programming Write a program whose source file is named
\"UnitProg2.java\". Do the following: Start by copying the program code from part 1 and
modifying it. This program will have a GUI that looks just like the previous one. The goal is to
make the JButtons work. Add code to handle the events when the user presses any of the six
buttons on the GUI. When the user presses a button simply write out to the console \"The user
pressed Button X\", where \"X\" is the number of the button. For example, when \"Button 2\" is
pressed the message written to the console should be \"The user pressed Button 2.\".
Solution
UnitProg1.java
import java.awt.*;
import javax.swing.*;
public class UnitProg1 {
private JFrame mainFrame;
private JPanel controlPanel;
private JPanel controlPanel1;
public UnitProg1(){
prepareGUI();
}
public static void main(String[] args){
UnitProg1 prog1 = new UnitProg1();
}
private void prepareGUI(){
mainFrame = new JFrame(\"UnitProg1\");
mainFrame.setSize(400,400);
mainFrame.setLayout(new GridLayout(2,1));
controlPanel = new JPanel();
controlPanel.setLayout(new FlowLayout());
controlPanel1=new JPanel(new FlowLayout());
JButton button1=new JButton(\"Button1\");
JButton button2=new JButton(\"Button2\");
JButton button3=new JButton(\"Button3\");
JButton button4=new JButton(\"Button4\");
JButton button5=new JButton(\"Button5\");
JButton button6=new JButton(\"Button6\");
controlPanel.add(button1, controlPanel);
controlPanel.add(button2, controlPanel);
controlPanel.add(button3, controlPanel);
controlPanel1.add(button4, controlPanel1);
controlPanel1.add(button5, controlPanel1);
controlPanel1.add(button6, controlPanel1);
mainFrame.add(controlPanel);
mainFrame.add(controlPanel1);
mainFrame.setVisible(true);
}
}
UnitProg2.java
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.*;
public class UnitProg2 {
private JFrame mainFrame;
private JPanel controlPanel;
private JPanel controlPanel1;
public UnitProg2(){
prepareGUI();
}
public static void main(String[] args){
UnitProg2 prog2 = new UnitProg2();
}
private void prepareGUI(){
mainFrame = new JFrame(\"UnitProg2\");
mainFrame.setSize(400,400);
mainFrame.setLayout(new GridLayout(2, 1));
controlPanel = new JPanel();
controlPanel.setLayout(new FlowLayout());
controlPanel1=new JPanel(new F.
Java awt
The document discusses various AWT classes and components for creating graphical user interfaces in Java, including buttons, borders, card layouts, checkboxes, text fields, menus, and handling events from mouse clicks and key presses. Code examples are provided to demonstrate drawing shapes and graphics, as well as handling user input events.
Graphical User Interface (GUI) - 1
Graphical User Interface (GUI) in Java uses classes from the javax.swing and java.awt packages to implement GUI programs. Swing classes provide greater compatibility across operating systems compared to AWT classes. Common Swing components include JButton, JLabel, JTextField, JTextArea, JCheckBox, JRadioButton, JComboBox, JList, JSlider and more. GUI programs require containers like JFrame and JPanel to hold components. Layout managers determine how components are arranged in containers. Common layouts include FlowLayout, BorderLayout and GridLayout. Menus are implemented using JMenuBar, JMenu and JMenuItem classes.
L11cs2110sp13
1) This document introduces graphical user interfaces (GUIs) and Java support for building GUIs. It discusses components, containers, layout managers, and events that make up GUIs.
2) It provides examples of creating windows and adding basic components in Swing and SWT. Layout managers like FlowLayout, BorderLayout, and GridLayout are demonstrated.
3) The document compares AWT, Swing, and SWT GUI toolkits and explains that Swing builds upon AWT to provide more functionality and platform-independent look and feel. Code examples illustrate key concepts of building Java GUIs.
Throughout the semester, we have been working on command line applic.pdf
Throughout the semester, we have been working on command line applications. While the
command line can be a powerful form of interacting with the computer, most modern
applications have a graphical user interface, or GUI. This program will give you some initial
experience making GUI applications with Swing.
1. Write an original GUI application in Java using Swing. The program can be a simple game, or
an application that demonstrates some of the capabilities of Swing, for example.
2. The application must do something non-trivial that is controlled by GUI components such as
buttons, text boxes, drop-down boxes, etc. For example, it might draw different things, or change
colors, based on button presses.
3. The GUI elements should be layed out reasonably using layout managers.
4. At least one element in your GUI program besides the title bar must include your name.
Suggestions
Get the skeleton of your GUI working first. First get the buttons drawing properly, then go on to
listen to and respond to events.
Initially, hook up the event listeners so that they print something to the console when a button is
pressed. That way you can know that your code is getting events.
If your program will draw shapes, make a subclass of JPanel called \"DrawPanel\" or something
like that to draw the objects and your name. Override the \"paintComponent\" method of this
class.
Solution
import javax.swing.*; import java.awt.*; class gui{ public static void main(String args[]){
//Creating the Frame JFrame frame = new JFrame(\"Chat Frame\");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(400,400);
//Creating the MenuBar and adding components JMenuBar mb = new JMenuBar(); JMenu m1 =
new JMenu(\"FILE\"); JMenu m2 = new JMenu(\"Help\"); mb.add(m1); mb.add(m2);
JMenuItem m11 = new JMenuItem(\"Open\"); JMenuItem m22 =new JMenuItem(\"Save as\");
m1.add(m11); m1.add(m22); //Creating the panel at bottom and adding components JPanel panel
= new JPanel(); // the panel is not visible in output JLabel label = new JLabel(\"Enter Text\");
JTextField tf = new JTextField(10);// accepts upto 10 characters JButton send = new
JButton(\"Send\"); JButton reset = new JButton(\"Reset\"); panel.add(label);// Components
Added using Flow Layout panel.add(tf); panel.add(send); panel.add(reset); // Text Area at the
Center JTextArea ta = new JTextArea(); //Adding Components to the frame.
frame.getContentPane().add(BorderLayout.SOUTH,panel);
frame.getContentPane().add(BorderLayout.NORTH,mb);
frame.getContentPane().add(BorderLayout.CENTER,ta); frame.setVisible(true); } }.
explain how 2D drawing is done in Java using Swing- Have you done this.docx
explain how 2D drawing is done in Java using Swing. Have you done this before in other languages, what is different about this, where would you see this being useful.
Solution
Following example demonstrates how to draw text drawString(), setFont() methods of Graphics class.
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Main extends JPanel{
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
Font font = new Font(\"Serif\", Font.PLAIN, 96);
g2.setFont(font);
g2.drawString(\"Text\", 40, 120);
}
public static void main(String[] args) {
JFrame f = new JFrame();
f.getContentPane().add(new Main());
f.setSize(300, 200);
f.setVisible(true);
}
}
.
package buttongui; import static com.sun.deploy.config.JREInf.pdf
package buttongui;
import static com.sun.deploy.config.JREInfo.clear;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.FlowPane;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class ButtonGUI extends Application implements EventHandler {
@Override
public void start(Stage primaryStage) {
btn.setText(\"Find\");
btn.setOnAction(this);
btn1.setText(\"Clear\");
btn1.setOnAction(this);
btn2.setText(\"Exit\");
btn2.setOnAction(this);
FlowPane flow = new FlowPane();
flow.getChildren().addAll(btn,btn1,btn2);
BorderPane border = new BorderPane();
border.setCenter(flow);
Scene scene = new Scene(border, 300,250);
primaryStage.setTitle(\"ButtonGUI\");
primaryStage.setScene(scene);
primaryStage.show();
}
@Override
public void handle(ActionEvent event) {
String tx =\"Hello world\";
System.out.println(tx);
if(btn2 == event.getSource()){
System.out.println(\"Exit Pressed\");
System.exit(0);
}
}
public static void main(String[] args)throws Exception {
launch(args);
}
}
Simple Exit & Clear Events) Add the Exit Event to your ButtonsGUI. Make it so that when the
user clicks on the Exit button, the application ends. Add the Clear Event to your ButtonsGUI.
Make it so that when the user clicks on the Clear button, the Text on all the Buttons is cleared.
please solve the clear button so that when the user clicks on the Clear button, the Text on all the
Buttons is cleared. thanks
Solution
Follow below steps to Add the Exit Event to your Buttons GUI:
1. Right Click on the Exit button and choose Events --> Action --> ActionPerformed.
2. The IDE will automatically add an ActionListener to the Exit button and generate a handler
method for handling the listener\'s actionPerformed method.
3. The IDE will open up the Source Code window and scroll to where you implement the action
you want the button to do when the button is pressed.
4. Add code for what we want the Exit Button to do. You will have to type System.exit(0);
5. Your final Exit button code should look like this:
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt)
{
System.exit(0);
}
Follow below steps to Add the Clear Event to your Buttons GUI:
In below example the text in two of our jTextFields will clear, it is overwriting the existing Text
with a blank.
1. Click on the Design tab at the top of your work area to go back to the Form Design
2. Right Click on the Clear button (jButton1). From the pop-up menu select Events --> Action --
> ActionPerformed.
3. Your final source code will be:
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
jTextField1.setText(\"\");
jTextField2.setText(\"\");
}
Note: You can add as many jTextField depending upon number of buttons y.
java2 swing
The document discusses Java Swing and GUI components in Java. It compares AWT and Swing, introduces common Swing components like JButton and JPanel, and shows how to layout components using layout managers. It also discusses how to create simple applications and applets using Swing components.
Working with Layout Managers. Notes 1. In part 2, note that the Gam.pdf
Working with Layout Managers. Notes: 1. In part 2, note that the Game class inherits from
JPanel. Therefore, the panel you are asked to add to the center of the content pane is the \"game\"
object. 2. In part 4, at the end of the function, call validate(). This is not mentioned in the book,
but it is mentioned in the framework comments.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Game extends JPanel
{
private JButton [][] squares;
private TilePuzzle game;
public Game( int newSide )
{
game = new TilePuzzle( newSide );
setUpGameGUI( );
}
public void setUpGame( int newSide )
{
game.setUpGame( newSide );
setUpGameGUI( );
}
public void setUpGameGUI( )
{
removeAll( ); // remove all components
setLayout( new GridLayout( game.getSide( ),
game.getSide( ) ) );
squares = new JButton[game.getSide( )][game.getSide( )];
ButtonHandler bh = new ButtonHandler( );
// for each button: generate button label,
// instantiate button, add to container,
// and register listener
for ( int i = 0; i < game.getSide( ); i++ )
{
for ( int j = 0; j < game.getSide( ); j++ )
{
squares[i][j] = new JButton( game.getTiles( )[i][j] );
add( squares[i][j] );
squares[i][j].addActionListener( bh );
}
}
setSize( 300, 300 );
setVisible( true );
}
private void update( int row, int col )
{
for ( int i = 0; i < game.getSide( ); i++ )
{
for ( int j = 0; j < game.getSide( ); j++ )
{
squares[i][j].setText( game.getTiles( )[i][j] );
}
}
if ( game.won( ) )
{
JOptionPane.showMessageDialog( Game.this,
\"Congratulations! You won!\ Setting up new game\" );
// int sideOfPuzzle = 3 + (int) ( 4 * Math.random( ) );
// setUpGameGUI( );
}
}
private class ButtonHandler implements ActionListener
{
public void actionPerformed( ActionEvent ae )
{
for( int i = 0; i < game.getSide( ); i++ )
{
for( int j = 0; j < game.getSide( ); j++ )
{
if ( ae.getSource( ) == squares[i][j] )
{
if ( game.tryToPlay( i, j ) )
update( i, j );
return;
} // end if
} // end inner for loop
} // outer for loop
} // end actionPerformed method
} // end ButtonHandler class
} // end Game class
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class NestedLayoutPractice extends JFrame
{
private Container contents;
private Game game;
private BorderLayout bl;
private JLabel bottom;
// ***** Task 1: declare a JPanel named top
// also declare three JButton instance variables
// that will be added to the JPanel top
// these buttons will determine the grid size of the game:
// 3-by-3, 4-by-4, or 5-by-5
// Part 1 student code starts here:
// Part 1 student code ends here.
public NestedLayoutPractice()
{
super(\"Practicing layout managers\");
contents = getContentPane();
// ***** Task 2:
// instantiate the BorderLayout manager bl
// Part 2 student code starts here:
// set the layout manager of the content pane contents to bl:
game = new Game(3); // instantiating the GamePanel object
// add panel (game) to the center of the content pane
// Part 2 student code ends here.
bottom = new JLabel(.
14a-gui.ppt
This document discusses event-driven programming and graphical user interfaces (GUIs) using Swing/AWT in Java. It provides an overview of key GUI concepts like components, containers, layout managers, and events. It explains how to create basic GUI elements like frames and buttons. It also demonstrates how to write an event listener as a nested class to handle button click events and update the GUI in response.
correct the error and add code same in the pic import jav.pdf
correct the error and add code same in the pic?
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.*;
import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class Login implements ActionListener{
private static JLabel userLabel;
private static JTextField userText;
private static JLabel PasswordLabel;
private static JPasswordField passwordLabel;
private static JButton button;
private static JLabel success;
public static void main(String[] args){
JPanel panel=new JPanel();
JFrame frame=new JFrame();
frame.setSize(350,200);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
frame.add(panel);
panel.setLayout(null);
userLable=new JLabel("UserName");
userLabel.setBounds(10,20,80,25);
panel.add(userLabel);
userText=new JTextField(20);
userText.setBounds(100,20,165,25);
panel.add(userText);
seclable=new JLabel("Password");
seclabe.setBounds(10,50,80,25);
panel.add(seclabel);
PasswordText=new JPasswordField(20);
PasswordText.setBounders(100,20,165,25);
panel.add(PasswordText);
button=new JButton("Login");
button.setBounds(10,80,80,25);
button.addActionListener(new Login());
panel.add(button);
success=new JLabel(" ");
success.setBounds(10,110,300,25);
panel.add(success);
frame.setVisible(true);
public void actionPerformed(ActionEvent e){
String user=userText.getText();
String password=passwordText.getText();
System.out.printin(user+" , "+password);
if(user.equals("ALEX")&& password.equals("allleex")){
success.setText("Login successful!");
}
}
}
}
}
}
Write and implement a program using JAVA, with a GUI that looks like the one shown below, if the
user clicks on submit button, store the fields in formfile.text and display the data from file into form..
Z blue introduction to gui (39023299)
This document provides an overview of Java Swing components for graphical user interfaces (GUIs). It introduces GUIs and discusses the advantages of Swing components over the older Abstract Window Toolkit (AWT) components. Key Swing components are explained, including JFrame for windows, JPanel for sections of a window, layout managers like FlowLayout and GridLayout, and common widgets like JLabel, JButton, JTextField, JTextArea, JComboBox, JCheckBox, JRadioButton, and JMenu. Event handling in Swing is also summarized.
CORE JAVA-2
The document provides an overview of core Java concepts including Abstract Windowing Toolkit (AWT), event handling, Swing, layout managers, and applets. It discusses AWT components like containers, windows, panels and frames. It also covers creating frames, setting buttons, and different approaches to event handling like within a class, with an outer class, or anonymously. The document reviews Swing components and hierarchies. It includes examples of creating Swing frames and using buttons, radio buttons, and displaying images on buttons.
Hi please complete the following with detailed working out Find the .pdf
Hi please complete the following with detailed working out Find the eigenvalues of C1 C1 C1
C1 C2 C3 C3 C3 C3 cn cn Hint: You may find that the identity A2 (c1 c2 cm) is useful.
Solution
COORDINATES, EIGENVALUES, AND EIGENVECTORS
1. Review of coordinates
1.1. The standard basis. The standard basis for R n is the basis E = {e1, e2, . . . en}, where ej is
the vector with 1 in the j-th position and zeros elsewhere.
1.2. Coordinates with respect to a basis. Let B = {v1, v2, . . . vn} be a basis for R n .
We know that for each vector x R n there are unique scalar “coordinates” c1, c2, . . . cn such that
(1.1) x = c1v1 + c2v2 + . . . + cnvn
We call the vector c R n having coordinates c1, c2 . . . cn the “coordinate vector” of x with
respect to the basis B, and denote it by [x]B. 1.3.
First examples. (a) [x]E = x for each x R n . (b) For any basis B = {v1, v2, . . . vn} of R n : [vj
]B = ej (1 j n). (c) [0]B = 0 for any basis B (the zero vector has the same representation with
respect to any basis.
1.4. Matrix calculation of coordinates. Letting B = {v1, v2, . . . vn} be a basis for R n we can
rewrite equation (1.1) in matrix form as (1.2) x = V [x]B where V is the matrix having the vector
vj for its j-th column, i.e. V = [v1, v2, . . . vn].
. 1 2 EIGENVALUES/EIGENVECTORS V is invertible because its columns are linearly
independent
(see, for example, Summary 3.2.9(v) of our textbook, pp. 119–120), so we can compute the B
coordinate representation of any vector x R n by solving (1.2) for [x]B: (1.3) [x]B = V 1x For
example, if in R 2 we take B = {v1, v2} to be our basis, where v1 = 1 3 and v2 = 2 5 , then V = 1
2 3 5 and V 1 = 5 2 3 1 .
Suppose, for instance, that x = 1 1 . Then [x]B = V 1x = 5 2 3 1 1 1 = 7 4 More generally, if x
= x1 x2 is any vector in R n then the same calculation shows that [x]B = 5x1 + 2x2 3x1 x2 .
1.5. The matrix of a linear transformation with respect to a basis. Recall that each n × n matrix
induces a linear transformation T : R n R n by means of matrix multiplication: (1.4) T(x) = Ax
(x R n ). We refer to A as the “standard matrix” for T. The lesson of what’s to follow is that it’s
not always the best matrix for T! For a basis B = {v1, v2, . . . vn} for R n we define (1.5) [T]B =
[[T(v1)]B, [T(v2)]B . . . [T(vn)]B] , i.e. [T]B is the matrix that has the B-coordinate
representation of T(vj ) as its j-th column (1 j n). We call [T]B the matrix of T with respect to
the basis B.
1.6. Example: B = E, the standard basis. In this case [T]B = [Ae1, Ae2, . . . Aen], the “standard
matrix” for T. EIGENVALUES/EIGENVECTORS 3 1.7. Geometric examples in R 2 . In this
next group of examples, L is a line through the origin in the direction of a non-zero vector v R 2
, and w is a non-zero vector perpendicular to v. We take as our basis for R 2 , not the standard
one, but instead B = {v, w}.
(a) Suppose T : R 2 R 2 is the transformation of orthogonal projection onto L. Then T(v) = v and
T(w) = 0, so [T]B = [[T(v)]B, [T(w)]B] = [[v]B, [0]B] = .
Explain and discuss 4G wireless communications and their advantages..pdf
Explain and discuss 4G wireless communications and their advantages.
Solution
4G stands for fourth-generation wireless, it is the stage of broadband mobile communications
that will supercede the third generation 3G.
Explanation- Fourth generation wireless system is a packet switched wireless system with wide
area coverage and high throughput. It is designed to be cost effective and to provide high spectral
efficiency . The 4g wireless uses Orthogonal Frequency Division Multiplexing (OFDM), Ultra
Wide Radio Band (UWB),and Millimeter wireless. Data rate of 20mbps is employed. Mobile
speed will be up to 200km/hr.The high performance is achieved by the use of long term channel
prediction, in both time and frequency, scheduling among users and smart antennas combined
with adaptive modulation and power control. Frequency band is 2-8 GHz. it gives the ability for
world wide roaming to access cell anywhere.
This new generation of wireless is intended to complement and replace the 3G systems.
Accessing information anywhere, anytime, with a seamless connection to a wide range of
information and services, and receiving a large volume of information, data, pictures, video, and
so on, are the keys of the 4G infrastructures. The future 4G infrastructures will consist of a set of
various networks using IP (Internet protocol) as a common protocol so that users are in control
because they will be able to choose every application and environment. Based on the developing
trends of mobile communication, 4G will have broader bandwidth, higher data rate, and
smoother and quicker handoff and will focus on ensuring seamless service across a multitude of
wireless systems and networks.
The key concept is integrating the 4G capabilities with all of the existing mobile technologies
through advanced technologies. Application adaptability and being highly dynamic are the main
features of 4G services of interest to users. These features mean services can be delivered and be
available to the personal preference of different users and support the users\' traffic, air
interfaces, radio environment, and quality of service.
Connection with the network applications can be transferred into various forms and levels
correctly and efficiently. The dominant methods of access to this pool of information will be the
mobile telephone, PDA, and laptop to seamlessly access the voice communication, high-speed
information services, and entertainment broadcast services.
The fourth generation will encompass all systems from various networks, public to private;
operator-driven broadband networks to personal areas; and ad hoc networks. The 4G systems
will interoperate with 2G and 3G systems, as well as with digital (broadband) broadcasting
systems. In addition, 4G systems will be fully IP-based wireless Internet.
This all-encompassing integrated perspective shows the broad range of systems that the fourth
generation intends to integrate, from satellite broadband to high altitude platform to cel.
More Related Content
Similar to I need help creating a java gui that draws lines, shapes, characters.pdf
Task Write a Java program to implement a simple graphics editor tha.pdf
Task: Write a Java program to implement a simple graphics editor that can be used to draw a
Pythagoras. The editor has a pull-down menu on top of the screen, with 2 buttons: \"Pythagoras\"
and \"Quit\". 1) When the user selects \"Pythagoras\", he/she can draw a tree of Pythagoras on
the screen. 2) The editor terminates/quits execution if the user selects \"Quit\" from the pulldown
menu. 3) The editor has a horizontal and a vertical sliding bar that when slided, moves the tree
on the canvas accordingly.
Solution
HOpe this will help--
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
public class MenuExp extends JFrame {
public MenuExp() {
setTitle(\"Menu Example\");
setSize(150, 150);
JSlider framesPerSecond = new JSlider(JSlider.VERTICAL,FPS_MIN, FPS_MAX,
FPS_INIT);
framesPerSecond.addChangeListener(this);
JSlider framesPerSecond1= new JSlider(JSlider.HORIZONTAL,FPS_MIN, FPS_MAX,
FPS_INIT);
framesPerSecond1.addChangeListener(this);
// Creates a menubar for a JFrame
JMenuBar menuBar = new JMenuBar();
// Add the menubar to the frame
setJMenuBar(menuBar);
// Define and add two drop down menu to the menubar
JMenu fileMenu = new JMenu(\"Process\");
menuBar.add(fileMenu);
// Create and add simple menu item to one of the drop down menu
JMenuItem newAction = new JMenuItem(\"Pythagoras\");
JMenuItem openAction = new JMenuItem(\"Quit\");
fileMenu.add(newAction);
fileMenu.add(openAction);
newAction.addActionListner(new PythagorusListener());
openAction.addActionListner(new CloseListener());
// Add a listener to the New menu item. actionPerformed() method will
// invoked, if user triggred this menu item
newAction.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
System.out.println(\"You have clicked on the new action\");
}
});
}
public static void main(String[] args) {
MenuExp me = new MenuExp();
me.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
me.setVisible(true);
}
}
public class CloseListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
//DO SOMETHING
System.exit(0);
}
}
public class PythagorusListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
setSize(900, 900);
setTitle(\"Pythagoras tree\");
add(new Draw(n));
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
}
class Draw extends JComponent {
private int height = 800;
private int width = 800;
private int steps;
public Draw(int n) {
steps = n;
Dimension d = new Dimension(width, height);
setMinimumSize(d);
setPreferredSize(d);
setMaximumSize(d);
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.white);
g.fillRect(0, 0, width, height);
g.setColor(Color.black);
int x1, x2, x3, y1, y2, y3;
int base = width/7;
x1 = (width/2)-(base/2);
x2 = (width/2)+(base/2);
x3 = w.
Graphical User Components Part 2
This document describes the contents of Chapter 14 - Graphical User Components Part 2 from a textbook on Java programming. It covers advanced GUI components like text areas, sliders, menus; multiple document interfaces; and advanced layout managers. It includes code examples for customizing JPanels, creating self-contained panels that handle their own events, using JSliders to control properties of other components, and more. The chapter aims to teach programming graphical user interfaces with Swing components in greater depth.
Chap1 1 1
The document discusses Java GUI components from the Abstract Window Toolkit (AWT) and Swing toolkit. It defines AWT as a set of APIs used to create GUI objects like buttons and windows. It describes common AWT containers like Frame, Panel, Dialog and Applet. It then introduces Swing as an enhanced GUI toolkit and lists some common Swing components in packages like javax.swing. The document provides examples of creating and using common Swing components like JFrame, JLabel, JButton, JCheckBox.
Chap1 1.1
The document discusses Java GUI components from the Abstract Window Toolkit (AWT) and Swing toolkit. It defines AWT as a set of APIs used to create GUI objects like buttons and windows. It describes common AWT containers like Frame, Panel, Dialog and Applet. It then introduces Swing as an enhanced GUI toolkit and lists some common Swing components in packages like javax.swing. The document provides examples of creating and using common Swing components like JFrame, JLabel, JButton, JCheckBox.
Md10 building java gu is
The document describes how to build graphical user interfaces (GUIs) in Java using containers, components, and layout managers. It defines key terms like containers, components, and layout managers. It provides examples of using common layout managers like FlowLayout, BorderLayout, GridLayout, and CardLayout to position components within containers. It also demonstrates how to add components to containers and control their visibility, size, and position.
Whenever I run my application my Game appears with the pict.pdf
Whenever I run my application, my Game appears with the picture cut up and shuffled. Whenever
I click a button to move the tiles, I get this error:
Cannot invoke "javax.swing.JPanel.removeAll()" because "this.this$0.panel" is null
How do I fix this?
code starts here:
package slidePuzzle;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.image.BufferedImage;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.util.ArrayList;
import java.util.Collections;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class Game extends JFrame {
// declare variables, arrays, and constants
private Buttons emptyButton;
private ArrayList<Buttons> buttons;
private ArrayList<Point> answer;
private final int TOTAL_BUTTONS = 12;
private final int TOTAL_WIDTH = 400;
private JPanel panel;
private Image img;
private BufferedImage src;
private BufferedImage mod;
private int width;
private int height;
// default constructor
public Game() {
// call initializer
initializeInterface();
}
private void initializeInterface() {
answer = new ArrayList<Point>();
buttons = new ArrayList<Buttons>();
JPanel panel = new JPanel();
panel.setBorder(BorderFactory.createLineBorder(Color.black));
panel.setLayout(new GridLayout(4, 3, 0, 0));
for (int x = 0; x < 4; x++) {
for (int y = 0; y < 3; y++) {
answer.add(new Point(x, y));
}
}
try {
src = loadImg();
int height = modifyHeight(src.getWidth(), src.getHeight());
mod = resizeImg(src, TOTAL_WIDTH, height, BufferedImage.TYPE_INT_ARGB);
}
catch (IOException exception) {
JOptionPane.showMessageDialog(this, "Image is unable to be rendered.", "Error",
JOptionPane.ERROR_MESSAGE);
}
height = mod.getHeight(null);
width = mod.getWidth(null);
for (int x = 0; x < 4; x++) {
for (int y = 0; y <3; y++) {
img = createImage(new FilteredImageSource(mod.getSource(),
new CropImageFilter(x * width / 3, y * height / 4, (width / 3), height / 4)));
Buttons button = new Buttons(img);
button.putClientProperty("position", new Point(x, y));
if (x == 3 && y == 2) {
emptyButton = new Buttons();
emptyButton.setBorderPainted(false);
emptyButton.setContentAreaFilled(false);
emptyButton.setEmptyButton();
emptyButton.putClientProperty("position", new Point(x, y));
} else {
buttons.add(button);
}
}
}
Collections.shuffle(buttons);
buttons.add(emptyButton);
for (int z = 0; z < TOTAL_BUTTONS; z++) {
Buttons button = buttons.get(z);
panel.add(button);
button.setBorder(BorderFactory.createLineBorder(Color.black));
button.addActionListener(new Click());
}
JFrame frame = new JFrame("Tile Slider");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new Game());
frame.pack();
frame.setVisible(true);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
}
private BufferedImage loadImg() throws IOException {
BufferedImage bufferedImage = ImageIO.read(new File("src/pond.jpg"));
return bufferedImage;
}
private BufferedImage resizeImg(BufferedImage n.
step by step to write a gnome-shell extension
The document provides an introduction to writing GNOME shell extensions using JavaScript. It discusses the GNOME shell architecture including the GNOME shell core written in C, GObject Introspection for accessing the core from JavaScript, and GNOME shell widgets that can be used from JavaScript extensions. It provides steps for getting started with a basic "Hello World" extension, including creating the extension, restarting GNOME shell, and using the Looking Glass tool to debug. Examples of using global variables and the Main object are also presented.
Write a program whose source file is named UnitProgl.java that do.pdf
Write a program whose source file is named \"UnitProgl.java\" that does the following: Creates
a frame with a GridLayout Manager Creates two panels and adds them to the frame, stacked one
over the other. In each panel creates three buttons, side by side. The buttons should be labeled
\"Button 1\", \"Button 2\", \"Button 3\", \"Button 4\", \"Button 5\" and \"Button 6\". Displays this
GUI when run. The only buttons that actually works will be the buttons on the window title bar:
minimize, maximize and the exit button in the upper right hand corner of the programs window.
Part 2 - Event Driven Programming Write a program whose source file is named
\"UnitProg2.java\". Do the following: Start by copying the program code from part 1 and
modifying it. This program will have a GUI that looks just like the previous one. The goal is to
make the JButtons work. Add code to handle the events when the user presses any of the six
buttons on the GUI. When the user presses a button simply write out to the console \"The user
pressed Button X\", where \"X\" is the number of the button. For example, when \"Button 2\" is
pressed the message written to the console should be \"The user pressed Button 2.\".
Solution
UnitProg1.java
import java.awt.*;
import javax.swing.*;
public class UnitProg1 {
private JFrame mainFrame;
private JPanel controlPanel;
private JPanel controlPanel1;
public UnitProg1(){
prepareGUI();
}
public static void main(String[] args){
UnitProg1 prog1 = new UnitProg1();
}
private void prepareGUI(){
mainFrame = new JFrame(\"UnitProg1\");
mainFrame.setSize(400,400);
mainFrame.setLayout(new GridLayout(2,1));
controlPanel = new JPanel();
controlPanel.setLayout(new FlowLayout());
controlPanel1=new JPanel(new FlowLayout());
JButton button1=new JButton(\"Button1\");
JButton button2=new JButton(\"Button2\");
JButton button3=new JButton(\"Button3\");
JButton button4=new JButton(\"Button4\");
JButton button5=new JButton(\"Button5\");
JButton button6=new JButton(\"Button6\");
controlPanel.add(button1, controlPanel);
controlPanel.add(button2, controlPanel);
controlPanel.add(button3, controlPanel);
controlPanel1.add(button4, controlPanel1);
controlPanel1.add(button5, controlPanel1);
controlPanel1.add(button6, controlPanel1);
mainFrame.add(controlPanel);
mainFrame.add(controlPanel1);
mainFrame.setVisible(true);
}
}
UnitProg2.java
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.*;
public class UnitProg2 {
private JFrame mainFrame;
private JPanel controlPanel;
private JPanel controlPanel1;
public UnitProg2(){
prepareGUI();
}
public static void main(String[] args){
UnitProg2 prog2 = new UnitProg2();
}
private void prepareGUI(){
mainFrame = new JFrame(\"UnitProg2\");
mainFrame.setSize(400,400);
mainFrame.setLayout(new GridLayout(2, 1));
controlPanel = new JPanel();
controlPanel.setLayout(new FlowLayout());
controlPanel1=new JPanel(new F.
Java awt
The document discusses various AWT classes and components for creating graphical user interfaces in Java, including buttons, borders, card layouts, checkboxes, text fields, menus, and handling events from mouse clicks and key presses. Code examples are provided to demonstrate drawing shapes and graphics, as well as handling user input events.
Graphical User Interface (GUI) - 1
Graphical User Interface (GUI) in Java uses classes from the javax.swing and java.awt packages to implement GUI programs. Swing classes provide greater compatibility across operating systems compared to AWT classes. Common Swing components include JButton, JLabel, JTextField, JTextArea, JCheckBox, JRadioButton, JComboBox, JList, JSlider and more. GUI programs require containers like JFrame and JPanel to hold components. Layout managers determine how components are arranged in containers. Common layouts include FlowLayout, BorderLayout and GridLayout. Menus are implemented using JMenuBar, JMenu and JMenuItem classes.
L11cs2110sp13
1) This document introduces graphical user interfaces (GUIs) and Java support for building GUIs. It discusses components, containers, layout managers, and events that make up GUIs.
2) It provides examples of creating windows and adding basic components in Swing and SWT. Layout managers like FlowLayout, BorderLayout, and GridLayout are demonstrated.
3) The document compares AWT, Swing, and SWT GUI toolkits and explains that Swing builds upon AWT to provide more functionality and platform-independent look and feel. Code examples illustrate key concepts of building Java GUIs.
Throughout the semester, we have been working on command line applic.pdf
Throughout the semester, we have been working on command line applications. While the
command line can be a powerful form of interacting with the computer, most modern
applications have a graphical user interface, or GUI. This program will give you some initial
experience making GUI applications with Swing.
1. Write an original GUI application in Java using Swing. The program can be a simple game, or
an application that demonstrates some of the capabilities of Swing, for example.
2. The application must do something non-trivial that is controlled by GUI components such as
buttons, text boxes, drop-down boxes, etc. For example, it might draw different things, or change
colors, based on button presses.
3. The GUI elements should be layed out reasonably using layout managers.
4. At least one element in your GUI program besides the title bar must include your name.
Suggestions
Get the skeleton of your GUI working first. First get the buttons drawing properly, then go on to
listen to and respond to events.
Initially, hook up the event listeners so that they print something to the console when a button is
pressed. That way you can know that your code is getting events.
If your program will draw shapes, make a subclass of JPanel called \"DrawPanel\" or something
like that to draw the objects and your name. Override the \"paintComponent\" method of this
class.
Solution
import javax.swing.*; import java.awt.*; class gui{ public static void main(String args[]){
//Creating the Frame JFrame frame = new JFrame(\"Chat Frame\");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(400,400);
//Creating the MenuBar and adding components JMenuBar mb = new JMenuBar(); JMenu m1 =
new JMenu(\"FILE\"); JMenu m2 = new JMenu(\"Help\"); mb.add(m1); mb.add(m2);
JMenuItem m11 = new JMenuItem(\"Open\"); JMenuItem m22 =new JMenuItem(\"Save as\");
m1.add(m11); m1.add(m22); //Creating the panel at bottom and adding components JPanel panel
= new JPanel(); // the panel is not visible in output JLabel label = new JLabel(\"Enter Text\");
JTextField tf = new JTextField(10);// accepts upto 10 characters JButton send = new
JButton(\"Send\"); JButton reset = new JButton(\"Reset\"); panel.add(label);// Components
Added using Flow Layout panel.add(tf); panel.add(send); panel.add(reset); // Text Area at the
Center JTextArea ta = new JTextArea(); //Adding Components to the frame.
frame.getContentPane().add(BorderLayout.SOUTH,panel);
frame.getContentPane().add(BorderLayout.NORTH,mb);
frame.getContentPane().add(BorderLayout.CENTER,ta); frame.setVisible(true); } }.
explain how 2D drawing is done in Java using Swing- Have you done this.docx
explain how 2D drawing is done in Java using Swing. Have you done this before in other languages, what is different about this, where would you see this being useful.
Solution
Following example demonstrates how to draw text drawString(), setFont() methods of Graphics class.
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Main extends JPanel{
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
Font font = new Font(\"Serif\", Font.PLAIN, 96);
g2.setFont(font);
g2.drawString(\"Text\", 40, 120);
}
public static void main(String[] args) {
JFrame f = new JFrame();
f.getContentPane().add(new Main());
f.setSize(300, 200);
f.setVisible(true);
}
}
.
package buttongui; import static com.sun.deploy.config.JREInf.pdf
package buttongui;
import static com.sun.deploy.config.JREInfo.clear;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.FlowPane;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class ButtonGUI extends Application implements EventHandler {
@Override
public void start(Stage primaryStage) {
btn.setText(\"Find\");
btn.setOnAction(this);
btn1.setText(\"Clear\");
btn1.setOnAction(this);
btn2.setText(\"Exit\");
btn2.setOnAction(this);
FlowPane flow = new FlowPane();
flow.getChildren().addAll(btn,btn1,btn2);
BorderPane border = new BorderPane();
border.setCenter(flow);
Scene scene = new Scene(border, 300,250);
primaryStage.setTitle(\"ButtonGUI\");
primaryStage.setScene(scene);
primaryStage.show();
}
@Override
public void handle(ActionEvent event) {
String tx =\"Hello world\";
System.out.println(tx);
if(btn2 == event.getSource()){
System.out.println(\"Exit Pressed\");
System.exit(0);
}
}
public static void main(String[] args)throws Exception {
launch(args);
}
}
Simple Exit & Clear Events) Add the Exit Event to your ButtonsGUI. Make it so that when the
user clicks on the Exit button, the application ends. Add the Clear Event to your ButtonsGUI.
Make it so that when the user clicks on the Clear button, the Text on all the Buttons is cleared.
please solve the clear button so that when the user clicks on the Clear button, the Text on all the
Buttons is cleared. thanks
Solution
Follow below steps to Add the Exit Event to your Buttons GUI:
1. Right Click on the Exit button and choose Events --> Action --> ActionPerformed.
2. The IDE will automatically add an ActionListener to the Exit button and generate a handler
method for handling the listener\'s actionPerformed method.
3. The IDE will open up the Source Code window and scroll to where you implement the action
you want the button to do when the button is pressed.
4. Add code for what we want the Exit Button to do. You will have to type System.exit(0);
5. Your final Exit button code should look like this:
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt)
{
System.exit(0);
}
Follow below steps to Add the Clear Event to your Buttons GUI:
In below example the text in two of our jTextFields will clear, it is overwriting the existing Text
with a blank.
1. Click on the Design tab at the top of your work area to go back to the Form Design
2. Right Click on the Clear button (jButton1). From the pop-up menu select Events --> Action --
> ActionPerformed.
3. Your final source code will be:
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
jTextField1.setText(\"\");
jTextField2.setText(\"\");
}
Note: You can add as many jTextField depending upon number of buttons y.
java2 swing
The document discusses Java Swing and GUI components in Java. It compares AWT and Swing, introduces common Swing components like JButton and JPanel, and shows how to layout components using layout managers. It also discusses how to create simple applications and applets using Swing components.
Working with Layout Managers. Notes 1. In part 2, note that the Gam.pdf
Working with Layout Managers. Notes: 1. In part 2, note that the Game class inherits from
JPanel. Therefore, the panel you are asked to add to the center of the content pane is the \"game\"
object. 2. In part 4, at the end of the function, call validate(). This is not mentioned in the book,
but it is mentioned in the framework comments.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Game extends JPanel
{
private JButton [][] squares;
private TilePuzzle game;
public Game( int newSide )
{
game = new TilePuzzle( newSide );
setUpGameGUI( );
}
public void setUpGame( int newSide )
{
game.setUpGame( newSide );
setUpGameGUI( );
}
public void setUpGameGUI( )
{
removeAll( ); // remove all components
setLayout( new GridLayout( game.getSide( ),
game.getSide( ) ) );
squares = new JButton[game.getSide( )][game.getSide( )];
ButtonHandler bh = new ButtonHandler( );
// for each button: generate button label,
// instantiate button, add to container,
// and register listener
for ( int i = 0; i < game.getSide( ); i++ )
{
for ( int j = 0; j < game.getSide( ); j++ )
{
squares[i][j] = new JButton( game.getTiles( )[i][j] );
add( squares[i][j] );
squares[i][j].addActionListener( bh );
}
}
setSize( 300, 300 );
setVisible( true );
}
private void update( int row, int col )
{
for ( int i = 0; i < game.getSide( ); i++ )
{
for ( int j = 0; j < game.getSide( ); j++ )
{
squares[i][j].setText( game.getTiles( )[i][j] );
}
}
if ( game.won( ) )
{
JOptionPane.showMessageDialog( Game.this,
\"Congratulations! You won!\ Setting up new game\" );
// int sideOfPuzzle = 3 + (int) ( 4 * Math.random( ) );
// setUpGameGUI( );
}
}
private class ButtonHandler implements ActionListener
{
public void actionPerformed( ActionEvent ae )
{
for( int i = 0; i < game.getSide( ); i++ )
{
for( int j = 0; j < game.getSide( ); j++ )
{
if ( ae.getSource( ) == squares[i][j] )
{
if ( game.tryToPlay( i, j ) )
update( i, j );
return;
} // end if
} // end inner for loop
} // outer for loop
} // end actionPerformed method
} // end ButtonHandler class
} // end Game class
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class NestedLayoutPractice extends JFrame
{
private Container contents;
private Game game;
private BorderLayout bl;
private JLabel bottom;
// ***** Task 1: declare a JPanel named top
// also declare three JButton instance variables
// that will be added to the JPanel top
// these buttons will determine the grid size of the game:
// 3-by-3, 4-by-4, or 5-by-5
// Part 1 student code starts here:
// Part 1 student code ends here.
public NestedLayoutPractice()
{
super(\"Practicing layout managers\");
contents = getContentPane();
// ***** Task 2:
// instantiate the BorderLayout manager bl
// Part 2 student code starts here:
// set the layout manager of the content pane contents to bl:
game = new Game(3); // instantiating the GamePanel object
// add panel (game) to the center of the content pane
// Part 2 student code ends here.
bottom = new JLabel(.
14a-gui.ppt
This document discusses event-driven programming and graphical user interfaces (GUIs) using Swing/AWT in Java. It provides an overview of key GUI concepts like components, containers, layout managers, and events. It explains how to create basic GUI elements like frames and buttons. It also demonstrates how to write an event listener as a nested class to handle button click events and update the GUI in response.
correct the error and add code same in the pic import jav.pdf
correct the error and add code same in the pic?
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.*;
import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class Login implements ActionListener{
private static JLabel userLabel;
private static JTextField userText;
private static JLabel PasswordLabel;
private static JPasswordField passwordLabel;
private static JButton button;
private static JLabel success;
public static void main(String[] args){
JPanel panel=new JPanel();
JFrame frame=new JFrame();
frame.setSize(350,200);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
frame.add(panel);
panel.setLayout(null);
userLable=new JLabel("UserName");
userLabel.setBounds(10,20,80,25);
panel.add(userLabel);
userText=new JTextField(20);
userText.setBounds(100,20,165,25);
panel.add(userText);
seclable=new JLabel("Password");
seclabe.setBounds(10,50,80,25);
panel.add(seclabel);
PasswordText=new JPasswordField(20);
PasswordText.setBounders(100,20,165,25);
panel.add(PasswordText);
button=new JButton("Login");
button.setBounds(10,80,80,25);
button.addActionListener(new Login());
panel.add(button);
success=new JLabel(" ");
success.setBounds(10,110,300,25);
panel.add(success);
frame.setVisible(true);
public void actionPerformed(ActionEvent e){
String user=userText.getText();
String password=passwordText.getText();
System.out.printin(user+" , "+password);
if(user.equals("ALEX")&& password.equals("allleex")){
success.setText("Login successful!");
}
}
}
}
}
}
Write and implement a program using JAVA, with a GUI that looks like the one shown below, if the
user clicks on submit button, store the fields in formfile.text and display the data from file into form..
Z blue introduction to gui (39023299)
This document provides an overview of Java Swing components for graphical user interfaces (GUIs). It introduces GUIs and discusses the advantages of Swing components over the older Abstract Window Toolkit (AWT) components. Key Swing components are explained, including JFrame for windows, JPanel for sections of a window, layout managers like FlowLayout and GridLayout, and common widgets like JLabel, JButton, JTextField, JTextArea, JComboBox, JCheckBox, JRadioButton, and JMenu. Event handling in Swing is also summarized.
CORE JAVA-2
The document provides an overview of core Java concepts including Abstract Windowing Toolkit (AWT), event handling, Swing, layout managers, and applets. It discusses AWT components like containers, windows, panels and frames. It also covers creating frames, setting buttons, and different approaches to event handling like within a class, with an outer class, or anonymously. The document reviews Swing components and hierarchies. It includes examples of creating Swing frames and using buttons, radio buttons, and displaying images on buttons.
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More from ezhilvizhiyan
Hi please complete the following with detailed working out Find the .pdf
Hi please complete the following with detailed working out Find the eigenvalues of C1 C1 C1
C1 C2 C3 C3 C3 C3 cn cn Hint: You may find that the identity A2 (c1 c2 cm) is useful.
Solution
COORDINATES, EIGENVALUES, AND EIGENVECTORS
1. Review of coordinates
1.1. The standard basis. The standard basis for R n is the basis E = {e1, e2, . . . en}, where ej is
the vector with 1 in the j-th position and zeros elsewhere.
1.2. Coordinates with respect to a basis. Let B = {v1, v2, . . . vn} be a basis for R n .
We know that for each vector x R n there are unique scalar “coordinates” c1, c2, . . . cn such that
(1.1) x = c1v1 + c2v2 + . . . + cnvn
We call the vector c R n having coordinates c1, c2 . . . cn the “coordinate vector” of x with
respect to the basis B, and denote it by [x]B. 1.3.
First examples. (a) [x]E = x for each x R n . (b) For any basis B = {v1, v2, . . . vn} of R n : [vj
]B = ej (1 j n). (c) [0]B = 0 for any basis B (the zero vector has the same representation with
respect to any basis.
1.4. Matrix calculation of coordinates. Letting B = {v1, v2, . . . vn} be a basis for R n we can
rewrite equation (1.1) in matrix form as (1.2) x = V [x]B where V is the matrix having the vector
vj for its j-th column, i.e. V = [v1, v2, . . . vn].
. 1 2 EIGENVALUES/EIGENVECTORS V is invertible because its columns are linearly
independent
(see, for example, Summary 3.2.9(v) of our textbook, pp. 119–120), so we can compute the B
coordinate representation of any vector x R n by solving (1.2) for [x]B: (1.3) [x]B = V 1x For
example, if in R 2 we take B = {v1, v2} to be our basis, where v1 = 1 3 and v2 = 2 5 , then V = 1
2 3 5 and V 1 = 5 2 3 1 .
Suppose, for instance, that x = 1 1 . Then [x]B = V 1x = 5 2 3 1 1 1 = 7 4 More generally, if x
= x1 x2 is any vector in R n then the same calculation shows that [x]B = 5x1 + 2x2 3x1 x2 .
1.5. The matrix of a linear transformation with respect to a basis. Recall that each n × n matrix
induces a linear transformation T : R n R n by means of matrix multiplication: (1.4) T(x) = Ax
(x R n ). We refer to A as the “standard matrix” for T. The lesson of what’s to follow is that it’s
not always the best matrix for T! For a basis B = {v1, v2, . . . vn} for R n we define (1.5) [T]B =
[[T(v1)]B, [T(v2)]B . . . [T(vn)]B] , i.e. [T]B is the matrix that has the B-coordinate
representation of T(vj ) as its j-th column (1 j n). We call [T]B the matrix of T with respect to
the basis B.
1.6. Example: B = E, the standard basis. In this case [T]B = [Ae1, Ae2, . . . Aen], the “standard
matrix” for T. EIGENVALUES/EIGENVECTORS 3 1.7. Geometric examples in R 2 . In this
next group of examples, L is a line through the origin in the direction of a non-zero vector v R 2
, and w is a non-zero vector perpendicular to v. We take as our basis for R 2 , not the standard
one, but instead B = {v, w}.
(a) Suppose T : R 2 R 2 is the transformation of orthogonal projection onto L. Then T(v) = v and
T(w) = 0, so [T]B = [[T(v)]B, [T(w)]B] = [[v]B, [0]B] = .
Explain and discuss 4G wireless communications and their advantages..pdf
Explain and discuss 4G wireless communications and their advantages.
Solution
4G stands for fourth-generation wireless, it is the stage of broadband mobile communications
that will supercede the third generation 3G.
Explanation- Fourth generation wireless system is a packet switched wireless system with wide
area coverage and high throughput. It is designed to be cost effective and to provide high spectral
efficiency . The 4g wireless uses Orthogonal Frequency Division Multiplexing (OFDM), Ultra
Wide Radio Band (UWB),and Millimeter wireless. Data rate of 20mbps is employed. Mobile
speed will be up to 200km/hr.The high performance is achieved by the use of long term channel
prediction, in both time and frequency, scheduling among users and smart antennas combined
with adaptive modulation and power control. Frequency band is 2-8 GHz. it gives the ability for
world wide roaming to access cell anywhere.
This new generation of wireless is intended to complement and replace the 3G systems.
Accessing information anywhere, anytime, with a seamless connection to a wide range of
information and services, and receiving a large volume of information, data, pictures, video, and
so on, are the keys of the 4G infrastructures. The future 4G infrastructures will consist of a set of
various networks using IP (Internet protocol) as a common protocol so that users are in control
because they will be able to choose every application and environment. Based on the developing
trends of mobile communication, 4G will have broader bandwidth, higher data rate, and
smoother and quicker handoff and will focus on ensuring seamless service across a multitude of
wireless systems and networks.
The key concept is integrating the 4G capabilities with all of the existing mobile technologies
through advanced technologies. Application adaptability and being highly dynamic are the main
features of 4G services of interest to users. These features mean services can be delivered and be
available to the personal preference of different users and support the users\' traffic, air
interfaces, radio environment, and quality of service.
Connection with the network applications can be transferred into various forms and levels
correctly and efficiently. The dominant methods of access to this pool of information will be the
mobile telephone, PDA, and laptop to seamlessly access the voice communication, high-speed
information services, and entertainment broadcast services.
The fourth generation will encompass all systems from various networks, public to private;
operator-driven broadband networks to personal areas; and ad hoc networks. The 4G systems
will interoperate with 2G and 3G systems, as well as with digital (broadband) broadcasting
systems. In addition, 4G systems will be fully IP-based wireless Internet.
This all-encompassing integrated perspective shows the broad range of systems that the fourth
generation intends to integrate, from satellite broadband to high altitude platform to cel.
Draw and describe a module of the cross-cultural communication pr.pdf
Draw and describe a module of the cross-cultural communication process, and provide an
hypothetical example from advertising or public relations(PR) to explain how such
communication may fail, improve and succeed
Draw and describe a module of the cross-cultural communication process, and provide an
hypothetical example from advertising or public relations(PR) to explain how such
communication may fail, improve and succeed
Solution
All communication is social - it draws on ways we have figured out how to talk and give
nonverbal messages. We don\'t generally impart a similar route from everyday, since factors like
setting, singular identity, and state of mind interface with the assortment of social impacts we
have disguised that impact our decisions. Communication is intuitive, so a vital impact on its
adequacy is our association with others. Do they hear and comprehend what we are endeavoring
to state? It is safe to say that they are listening admirably? Is it true that we are listening
admirably accordingly? Do their reactions demonstrate that they comprehend the words and the
implications behind the words we have picked? Is the state of mind positive and responsive? Is
there trust amongst them and us? Are there contrasts that identify with ineffectual
communication, unique objectives or interests, or on a very basic level diverse methods for
seeing the world? The responses to these inquiries will give us a few signs about the viability of
our communication and the straightforwardness with which we might have the capacity to travel
through clash.
The test is that even with all the cooperative attitude on the planet, miscommunication is
probably going to happen, particularly when there are critical social contrasts between
communicators. Miscommunication may prompt clash, or disturb struggle that as of now exists.
We make - whether it is obvious to us or not - very unique importance of the world, our places in
it, and our associations with others. In this module, culturally diverse communication will be
illustrated and exhibited by cases of thoughts, states of mind, and practices including four
factors:
• Time and Space
• Fate and Personal Responsibility
• Face and Face-Saving
• Nonverbal Communication
As our nature with these distinctive beginning stages builds, we are developing social familiarity
- consciousness of the ways societies work in communication and strife, and the capacity to react
successfully to these distinctions.
Time and Space
Time is a standout amongst the most focal contrasts that different societies and social methods
for getting things done. In the West, time has a tendency to be viewed as quantitative, estimated
in units that mirror the walk of advance. It is intelligent, successive, and exhibit engaged, moving
with incremental assurance toward a future the self image can\'t contact and a past that isn\'t a
piece of now. In the East, time feels like it has boundless coherence, a disentangling as opposed
to a strict limi.
Discuss the reasons why visions fail. What steps can be implemented .pdf
Discuss the reasons why visions fail. What steps can be implemented to help successfully
achieve a vision?
Solution
Vision is nothing but the summary of the organization\'s goals and objectives. Vision leads to
successful change in an organization. Vision helps in identifying whether the particular change is
appropriate for the organization or not.
It is the organizational declaration as to what the organization wants to achieve as their mid-term
or long-term goals. These are generally descriptive and inspirational to accomplish the goals.
Vision often fail because
The steps that can be implemented to help successfully achieve a vision are: -.
Describe the original purpose of the Clean Air Act Policy of 1963. E.pdf
Describe the original purpose of the Clean Air Act Policy of 1963. Explain what the
Amendments of 1970 and 1990 added to this policy. What were the benefits and disadvantages
of these amendments? Should the policy be amended again to reflect current environmental /
economic issues and technology innovations.
Solution
INTRODUCTION AND PURPOSE
The Clean Air Act was major legislation passed to control air pollution in the United States. The
Act was passed in 1963, but important and major amendments were added to the original Act in
1970 and 1990. This Act implements a comprehensive program for reducing air pollution
focusing on the reduction of ambient (that which is present in the open air) and source specific
(that which can be traced to identifiable sources, such as factories and automobiles) air pollution.
It was a legislation that offered federal research aid, urged the development of state control
agencies, and involved the federal government in inter-state pollution issues. More amendments
were added to the Act in 1977.
They were concerned with states that were not achieving national objectives as to auto
emissions and measures to prevent air quality deterioration in areas where the air had previously
been clean. This was the federal government’s first active role in clean air policy. But it was the
Clean Air Act of 1970 that for the first time granted real power to the federal government instead
of the states.
AMENDMENT 1970
The 1970 Clean Air Act forms the basis of the U.S. air pollution control policy. It has four major
components:
i) it put into place National Ambient Air Quality Standards which are intended to protect human
health and environment (the Environmental Protection Agency (EPA) developed these standards
and they targeted major polluting chemicals);
ii) EPA was to establish New Source Performance Standards to determine how much pollution
should be allowed by different industries in different regions;
iii) The Act specified standards for controlling auto emissions, aiming at reduction of various
gases by almost 90 percent; and
iv) the law encouraged states to develop plans to achieve these standards and required that those
state plans should be approved by EPA. Where any state chose not to form such a plan or did not
complete it by a specified date, the EPA can take over administration of the law for that state.
The 1970 Act required states to enforce the Cleanliness..
AMENDMENT 1990
The Clean Air Act was last amended in 1990. This amendment addressed environmental issues
like acid rain, toxic pollutants, areas still not at regulation standards, and ozone layer depletion.
Massive decreases in certain gas emissions were mandated to control acid rain; increased
regulation of toxic pollutants; deadlines for the noncompliant areas; and three major chemical
contributors to ozone layer depletion were phased out.
RESULT
A 2017 study found that the Clean Air Act of 1970 led to an over 10 percent reduction in
pollution (\"ambient TSP.
Continuity 100 Let f be a continuous function on a metric space X. L.pdf
Continuity 100 Let f be a continuous function on a metric space X. Let Z(f)(the zero set of f) be
the set of points EX f (a) -0. Prove that Z(f) s closed
Solution
PROOF :-
We know that f(Z(f)) = {0} because the set Z(f) is dened to be all the values for which f(x) = 0
and so the set {0} is closed. Since f is continuous we know that f-1({0}) is closed.
Therefore Z(f) is closed in X..
Admitting New Partner With Bonus Cody Jenkins and Lacey Tanner formed.pdf
Admitting New Partner With Bonus Cody Jenkins and Lacey Tanner formed a partnership to
provide landscaping services. Jenkins and Tanner shared profits and losses equally. After all the
tangible assets have been adjusted to current market prices, the capital accounts of Cody Jenkins
and Lacey Tanner have balances of $32,000 and $42,000, respectively. Valeria Solano has
expertise with using the computer to prepare landscape designs, cost estimates, and renderings.
Jenkins and Tanner deem these skills useful; thus, Solano is admitted to the partnership at a 30%
interest for a purchase price of $20,000. a. Determine the recipient and amount of the partner
bonus b. Provide the journal entry to admit Solano into the partnership. For a compound
transaction, if an amount box does not require an entry, leave it blank c. Why would a bonus be
paid in this situation? Apparently, Jenkins and Tanner value offered by Solano.
Solution.
7. In many respects metal binding is similar to the binding of a prot.pdf
7. In many respects metal binding is similar to the binding of a proton. For instance the N- atom
of thiocyanate can be protonated to produce (H-NCS). Similarly, protonation of the cyanide
anion (CN-) can be observed at the C-atom to produce H-CN. In apparent contrast to this
analogy, metal coordination to (NCS) can be observed at either N- or S- atoms (M-NCS and
NCS-M) whereas protonation only occurs at the N-atom. Provide an explanation for this
behavior. Similarly, why is the cyanide anion only capable of binding metals and protons at the
C-atom?
Solution
SCN- shares its negative charge approximately equally between sulfur and nitrogen (-S-CN or
S=C=N-). As a consequence, thiocyanate can bind either sulfur or nitrogen center. it is an
ambidentate ligand. [SCN] can also bridge two (MSCNM) or even three metals.
Carbon atom of CO has nonbonding (or weakly anti-bonding) sp-hybridized electron pair which
is make bond with metal. And also, the highest occupied molecular orbital (HOMO) of CO
shows electron density more in carbon of CO. Due to this reason metal coordinate with C of CO.
Metal ......CO bonding explained in below.
Carbon monoxide binds to transition metals using \"synergistic * back-bonding.\" The bonding
has three components, giving rise to a partial triple bond (in CO). A coordination bond arises
from overlap of the nonbonding (or weakly anti-bonding) sp-hybridized electron pair on carbon
with a blend of d-, s-, and p-orbitals on the metal. A pair of bonds arises from overlap of filled
d-orbitals on the metal with a pair of -antibonding orbitals projecting from the carbon atom of the
CO, this back binding requires that the metal have d-electrons, and that the metal is in a
relatively low oxidation state (<+2) which makes the back donation process favorable.
3. Photosynthetic organisms produce about 300 x 1015 g of oxygen per .pdf
3. Photosynthetic organisms produce about 300 x 1015 g of oxygen per year (Holland 1995. If
this oxygen accumulated, the oxygen content of the atmosphere would double every 2000 years.
Why does this not happen? Is the global system regulated? If so, how is this regulation
accomplished?
Solution
Oxygen is considered as one of the most important gas in the atmosphere .it would have been
impossible to imagine life without this gas.
The contribution of oxygen to the atmosphere is mainly due to the photosynthetic activity of the
plants apart from this the splitting of the hydrogen atoms from water vapor in the atmosphere due
to photolysis also contributes to oxygen of the atmosphere to a negligible amount.the oxygen is
left behind and the hydrogen escapes.
The major contributor of atmospheric oxygen is the photosynthetic activity of the plants but this
does not accumulate in the atmosphere as most of it is immediately used up by the respiration
process. the maintenance of oxygen levels is one of the classic example of homeostasis . Of the
amount of oxygen produced though all of it is immediately used in the respiratory process The
net gain of oxygen comes from the burial of organic matter (plant and animal matter ) which
reacts with the reducing substances of the earth like iron and is locked as the solid oxides over
time. Eventually it would be all used up and equilibrium atmosphere would not contain more
oxygen.
The continuous photosynthesis and carbon burial keeps the level of oxygen as high as it is and
thus homeostasis is maintained ,Where plant photosynthesis acts as the the pump and the rate of
burial is equivqlent of the aperture between the reservoir halves..
1. Which is less soluble in water, 1-pentanol or 1-heptanol Explain..pdf
1. Which is less soluble in water, 1-pentanol or 1-heptanol? Explain. 2. Write an equation for the
reaction of methanol with sodium 3. Write an equation for the reaction of 2-butanol with the
Lucas reagent. 4. Describe the odor of the product derived from mixing isopentyl alcohol and
acetic acid, and write the equation for its formation
Solution
1) 1-heptanol is lest soluble in water.
Because solubility depend upon the type of bond present in the molecule.1- heptanol has loneger
non polar chain as compare to 1- heptanol. Hence its hydrophobic part make it less soluble in
water.Therefore from above conclusion we an say that 1- heptanol is less soluble in water as
comare to 1- pentanol..
X Company has the following budgeted cash flows for JanuaryIf the .pdf
X Company has the following budgeted cash flows for January
If the cash balance is $5,000 on January 1, what is the budgeted cash balance on January
31?Cash collections$45,000Cash PaymentsInventory17,000Operating Expenses13,000Capital
Expenditures18,000
Solution
SOLUTION
Budgeted cash balance on January 31 is $2,000ParticularsAmount ($)Cash balance as on Jan.
15,000Add: Cash collections45,000Total cash available50,000Less: Cash payments-
Inventory(17,000)Operating Expenses(13,000)Capital Expenditures(18,000)Cash balance on
January 312,000.
Why did animal phyla appear so suddenly during the Cambrian explosion.pdf
Why did animal phyla appear so suddenly during the Cambrian explosion? Several variables
have been hypothesized to play a role in the sudden appearance of diverse animals during the
Cambrian explosion. For example, the \'higher oxygen levels\" hypothesis invokes an
environmental trigger and the \"evolution of predation\" hypothesis invokes ecological
interactions. Erik Sperling, Andrew Knoll, and colleagues set out to test the hypothesis that these
two hypotheses are linked. Could the oxygen atmosphere enable the evolution of predation?
Sponges lived in low-oxygen oceans before the Cambrian, and they occur today in both low-
oxygen and high-oxygen environments. What aspects of the sponge body plan might have
prevented the evolution of predatory sponges in high-oxygen environments? Drag the terms on
the left to the appropriate blanks on the right to complete the sentences. Effective predators tend
to be and they have for detecting prey. Sponges lack, , and as adults.
Solution
EFFECTIVE PREDATORS TEND TO BE MOBILE AND THEY HAVE MOBILITY TO
DETECTING PREY . SPONGES LACK SENSORY
STRUCTURES,SYMMETRY,SEGMENTATION AS ADULTS ..
Which of the following information-management systems uses artificia.pdf
Which of the following information-management systems uses artificial intelligence?
A. Polyinstantiation
B. Known signature scanning
C. Application programming interface
D. Knowledge discovery in databases
Solution
D. Knowledge Discovery in Databases (KDD) is an artificial intelligence method used to identify
useful patterns in data; as such, it provides a type of automatic analysis. Answer A is incorrect
because polyinstantiation is a technique used to prevent inference violations. Answer B is
incorrect because known signature scanning is a method used to detect computer viruses. Answer
C is incorrect because the application programming interface (API) is in no way associated with
artificial intelligence.
Which of the following was part of the reason for the European excha.pdf
Which of the following was part of the reason for the European exchange rate crisis of 1992?
Select one:
a. the need for the German mark to appreciate relative to other European currencies
b. the high interest rate in non-German countrie
c. the need to maintain a roughly fixed nominal exchange rate in the face of relatively high
inflation
d. the need for a smaller German budget deficit after German reunification
e. the need for the British pound to be tied to gold
Solution
The need for the German mark to appreciate relative to other European currencies due to high
interest rate in Germany was one of the reason for European echange rate. So option (a) is
correct..
Ture or false or uncertain ( explain why) Thank you! e. Output per c.pdf
Ture or false or uncertain ( explain why) Thank you! e. Output per capita in most countries in the
world is con- verging to the level of output per capita in the United States. f. Capital
accumulation does not affect the level of output g. The aggregate production function is a
relation among h. Because eventually we will know everything, technologi- in the long run. Only
technological progress does. output, labour, and capital. cal progress will end, and growth will
eventually end as well.
Solution
e. True. With the effect of globalization and global trade, countries are getting specialized in
goods which have comparative advantage. So, countries are improving efficiency so that they
can trade with other nations by gaining competitive advantage.
f. False. Both capital accumulation and technological progress have influence on output
g. True. The functional form, output = AF(K,L), A is used to denote changes in technology, F is
a functional form of capital and labor
h. False, changes in technology is a dynamic and variable component in long run and hence
growth will not end.
This is for a C programDene a Car structure type in your header le.pdf
This is for a C program
Dene a Car structure type in your header le. The Car structure should have three elds: a model (a
string of at most 100 characters), a year (an integer), and a daily rental rate (a oating point
number)
Solution
#include
#include
struct Car
{
char model[100];
int year;
float rent;
};
int main()
{
return 0;
}.
This project will implement a simple usernamepassword lookup system.pdf
This project will implement a simple username/password lookup system using hash tables. You
should create the Hash Table from scratch. It may be helpful to create a separate class called
HashEntry, in which you can store a String username and String password. The Hash Table will
store these entries using the username as the key and the password as the value.
Create a hash code using the key to determine where the value is stored in the Hash Table. Here
is a sample hash method. Feel free to borrow it for your program:
privateint calcHashCode(String key) {
int mod = key.hashCode() % size;
return mod < 0 ? mod + size : mod;
}
You will be provided with a data file containing comma separated usernames and passwords.
Read the data in from the file and put it into the table. Once the table is populated, ask the user to
log into the system. If their username and password match the data in the table, alert the user that
access has been granted:
Login: trevor
User trevor not found.
Login: mary
Password: test
Authentication Failure
Login: mary
Password: contrary
Authentication Successful
Welcome mary
Provided Data File (containing comma separated usernames and passwords):
jack,broken.crown
jill,tumblin\'down
mary,contrary
bopeep,sheep!lost
Solution
//main.cpp
#include
#include
#include
#include
#include
#include \"HashTable.cpp\"
using namespace std;
/// the struct for the login and password
struct Account
{
/// variables
string login;
string password;
/// hash function
static unsigned int hash(const string& str)
{
unsigned int val = 0;
for (int i = 0; i < str.length(); ++i) {
val += str[i];
}
return val;
}
/// get key function
string getKey() const
{
return login;
}
};
int main()
{
string loginI;
string passwordI;
string temp;
/// open file
ifstream fin (\"password.dat\");
fin.clear();
/// make new account to read into
Account acct;
/// make the hash table
HashTable data (8);
/// read in
while (fin.good())
{
fin >> acct.login >> acct.password;
//cout << acct.login << \" \" << acct.password << endl;
data.insert(acct);
//data.showStructure();
}
data.showStructure();
/// read in
cout << \"Login: \";
cin >> loginI;
do
{
cout << \"Password: \";
cin >> passwordI;
/// check for login
if (data.retrieve(loginI, acct))
{
/// check if passwords are the same
if ((acct.password == passwordI))
{
/// same password, print success
cout << \"Authentication successful\" << endl;
}
else
{
/// different password, print failure
cout << \"Authentication failure\" << endl;
}
}
else
{
/// if the data login is not saved print failure
cout << \"Authentication failure\" << endl;
}
cout << \"Login: \";
cin >> loginI;
}
while(!cin.eof());
return 0;
}
=====================================================================
=====
#include
#include
#include
#include
#include \"HashTable.h\"
#include \"show10.cpp\"
using namespace std;
template
HashTable::HashTable(int initTableSize)
{
/// save size
tableSize = initTableSize;
/// initialize the array
dataTable = new BSTree[tableSize];
}
t.
The following code is based on the Josephus problem, the code does c.pdf
The following code is based on the Josephus problem, the code does compile and gives me an
answer but it\'s not the right answer according to how the josephus problem works.
--------------------------------------------------------------------------------------------------------------------
---------------------------------------------
class Node
{
public int iData;
public Node next;
public Node(int x) {
iData = x;
}
public void displayNode() {
System.out.print(iData + \" \");
}
}
class CircularList
{
private Node first;
private Node last;
private Node current;
private int count; // total items in the list
public CircularList getCurrent;
public CircularList() {
first = null;
last = null;
current = null;
count = 0;
}
public boolean isEmpty() {
return first == null;
}
public void step() {
current = current.next;
}
public Node getCurrent() {
return current;
}
public Node getFirst() {
return first;
}
public void insert(int x) {
Node newNode = new Node(x);
if (isEmpty()) {
first = newNode;
current = first;
} else {
current.next = newNode;
}
newNode.next = first;
last = newNode;
step();
count++;
}
public boolean search(int x) {
Node search = first;
int y = 0;
while (search.iData != x && y < count) {
search = search.next;
y++;
}
if (search.iData == x) {
System.out.println(\"Found the value: \" + search.iData);
return true;
} else {
System.out.println(\"Value not found in list\");
return false;
}
}
public void delete(int x) {
Node prev = first;
Node curr = first.next;
while (curr.iData != x) {
prev = curr;
curr = curr.next;
}
if (count == 1) {
first = null;
count--;
} else if (curr == first) {
prev.next = curr.next;
first = curr.next;
count--;
} else {
prev.next = curr.next;
count--;
}
}
public void displayList() {
int x = 0;
Node printer = first;
while (x < count) {
printer.displayNode();
printer = printer.next;
x++;
}
System.out.println(\"\");
}
}
class Josephus
{
private int numOfPeople; // number of people in a circle
private int countNum; // number used for counting off
private Node head;
private Node tail;
CircularList circle;
public Josephus() {
circle = new CircularList();
numOfPeople = 0;
countNum = 0;
}
public void setNumOfPeople(int x) {
numOfPeople = x;
}
public int getNumOfPeople() {
return numOfPeople;
}
public void setCountNum(int x) {
countNum = x;
}
public int getCountNum() {
return countNum;
}
public void addPeople() {
for (int i = 1; i < numOfPeople; i++) {
circle.insert(i);
}
}
public void move() {
for (int i = 0; i < countNum; i++) {
tail = head;
head = head.next;
}
System.out.println(\"KILLED : \" + head.iData);
}
public void execute() {
tail = null;
head = circle.getFirst();
while (numOfPeople != 2) {
move();
circle.delete(head.iData);
tail = tail.next;
head = head.next;
numOfPeople--;
display();
}
}
public void display() {
System.out.print(\"Alive: \");
circle.displayList();
}
}
public class Test
{
public static void main(String[] args) {
Josephus suicide = new Josephus();
suicide.setNumOfPeople(20);
suicide.addPeople();
suicid.
Tech transfers should the fed Gov’t keep subsidizing University .pdf
Tech transfers: should the fed Gov’t keep subsidizing University patents?
You’re the lead economic analyst for a multi agency federal task force assessing federal grants to
research universities that studies. Is subsidizing those types of studies with the hope that the
technology transfer creates economic growth the best use of taxpayer money? Use whatever info
or sources you can find to make the most socieconomically conscious argument for your position
and present it to the rest of the taskforce
Tech transfers: should the fed Gov’t keep subsidizing University patents?
You’re the lead economic analyst for a multi agency federal task force assessing federal grants to
research universities that studies. Is subsidizing those types of studies with the hope that the
technology transfer creates economic growth the best use of taxpayer money? Use whatever info
or sources you can find to make the most socieconomically conscious argument for your position
and present it to the rest of the taskforce
You’re the lead economic analyst for a multi agency federal task force assessing federal grants to
research universities that studies. Is subsidizing those types of studies with the hope that the
technology transfer creates economic growth the best use of taxpayer money? Use whatever info
or sources you can find to make the most socieconomically conscious argument for your position
and present it to the rest of the taskforce
Solution
Yes.
Money spent on education and educational research is never wasted. Government subsidizes
universities with the hope of generating economic growth. It is only because of these subsidies
that the prospective researchers and budding educationalists are motivated to go into research
and create something new.
In the absence of these subsidies, many students and researchers are demotivated because they
are unable to arrange for required funds for their research. As a result of this many researchers
leave their research in between, which is a big harm to the economy.
The government should never doubt money it has spent on education and research because even
if 1 out of 10 students are able to create something striking, its benefits will help reap the efforts
and money invested in no time..
Remaining Time 31 minutes, 22 seconds QUESTION 1 Question Completion.pdf
Remaining Time: 31 minutes, 22 seconds QUESTION 1 Question Completion Status
REQUIRED: 1 During 2018, Stephenson experienced the following transactions relating to its
investment in stock: 6/1 Stephenson purchased 700 shares of Dawe common share for $14,600
9/1 11/1 12/30 Dawe paid cash dividends, $1/share Stephenson sold 20% of the Dave shares for
$6,300 in total. Dawe paid cash dividends, $.50/share >>Present the journal entries for the
transaction on the books of Stephenson. REQUIRED: 2. Sherollyn Company invested in two
companies in 2020 These company are Bamco Company and KingFeco Industries, Inc. Facts
about both investments are as follows: FV/share at 12/31 Income of Investee %Holding 40%
7.5% #0f shares Held 30,000 15,000 Cost/share 511 $13 Investee $11.50 $14.75 $80,000
$122,000 Bamco KingFeco In addition, Bamco paid $60,000 in total cash dividends in 2020
KingFeco paid a $30,000 total cash dividend in 2020 >>Prepare ALL 2020 required journal
entries for both investments on the books of Sherrollyn Company REQUIRED: Juli e Company
pu chased bonds with a total face value $900,000 f om K pple Company on February 1 2018 at
100 quote The bonds are 9% 51,000 bonds 3. and pay interest every February 1 The bonds are a
trading security on Julie\'s books. On December 31, the bonds have a market value reflecting a
97 quote. >>Present ALL iournal entries related to the bond investment reauired by Jullie in
2018 December 31 is fiscal year en Click Save and Submit to save and submit. Click Save All
Answers to save all answers
Solution
SOLUTION
Question -1DateAccount titles and ExplanationDebit ($)Credit ($)6/1Investment in
Stock14,600Common shares14,600(To record purchase of shares)9/1Dividend (700 *
$1)700Cash700(To record payment of dividend)11/1Cash6,300Investment in shares6,300(To
record sales of Dawe shares)12/30Dividends280Cash (700 * 80% * $0.50)280(To record
payment of dividend).
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