JAva

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3. 3

4. 4

5. SEMESTRAL PLANS

7. WEEKLY PLANS

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16. Part 1.
public class Exercise1
{
public static void main(String[] args)
{
System.out.println("Correct!");
}
}

17. Part 2. (Total: 17 items)
Class cell phone Object
brand
model
LCD size
weight
dimensions/size
talk time
battery standby time
Nokia
Nokia n70
176 x 208 pixels
125 grams
109 x 53 x 24 mm
3.5 hours
11 days
Send_Message Call
Take_Picture Record_Video

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System.out.print();
System.out.println();

22. printWelcome()

23. public class Exercise2
{
public static void mail(String[] args)
{
System.out.print("+++++++++");
System.out.println("+++++++++");
System.out;println("++ ++")'
System.out.println("++ ++");
System.out.println("+++++++++")>
System.oul.printtn("+++++++++");
}
}

24. System.out.println() System.out.print()
System.out.print()
System.out.println()
public class Exercise2
{
public static void main(String[] args)
{
System.out.println("+++++++++");
System.out.println("+++++++++");
System.out.println("++ ++");
System.out.println("++ ++");
System.out.println("+++++++++");
System.out.println("+++++++++");
}
}
public class Lesson2
{
public static void main(String[] args)
{
System.out.println("The quick brown fox jumped over
the");
System.out.println("lazy dog and ran through the
forest.");
System.out.println(" ");
System.out.println(" ___ /");
System.out.println(" ^ ^ ");
System.out.println(" o / ");
System.out.println("Fox");
}
}

25. System.out.print()
System.out.println("HelloEveryone!!!");
"Hello Everyone!!!" ""Hello Everyone!!!""

26. public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello, World");
}
}

28. ** *** ********** ** * **
** *** ** ** ** *** **
** *** ** ** ** ** ** **
** *** ** ** ** ** ** **
***** ** ** ** ** ** **
** *** ** ** ** ** ** **
** *** ** ** ** ** ** **
** *** ** ** *** ***
** *** ********** * *

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32. public class Lesson3
{
public static void main(String[] args)
{
final double d = 10.8;
final boolean b = false;
final String s1 = "quick brown fox";
final String s2 = "slow yellow fox";
final int i = 4;
System.out.println(d);
System.out.println(b);
System.out.println(s1 + " and " + s2);
System.out.println(i);
System.out.println((int)d - i);
}
}
public class Exercise3
{
public static void main(String[] args)
{
final double d = 5.5;
final String s1 = "tekki";
final int i = 4;
System.out.println(d);
System.out.println(s1 + " is cool!");
System.out.println(i);
System.out.println((int)d - i);
}
}

33. Average = (int)((Quiz_1+Quiz_2)/2); //explicit casting
int
System.out.println((int)d);

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39. public class Exercise4
{
public static void main(String[] args)
{
final int A = 1, B = 0;
System.out.print(A);
System.out.print(A);
System.out.print(A);
System.out.print(A);
System.out.print(A);
System.out.print(A);
System.out.println(A);
System.out.print(A);
System.out.print(" ");
System.out.println(A);
System.out.print(A);
System.out.print(" ");
System.out.print(B);
System.out.print(" ");
System.out.print(B);
System.out.print(" ");
System.out.println(A);
System.out.print(A);
System.out.print(" ");
System.out.println(A);
System.out.print(A);
System.out.print(A);
System.out.print(A);
System.out.print(A);
System.out.print(A);
System.out.print(A);
System.out.println(A);
}
}

40. Part 2.
final int Y = 10, Z = 20;
System.out.println(Z/Y); //to print out “2”
System.out.println(Z+Y); //to print out “30”
System.out.println(Z-Y-Y); //to print out “0”
System.out.println(Z>Y); //to print out “true”
final int Y = 10, Z = 20;
System.out.println(2); //to print out “2”
System.out.println(30); //to print out “30”
System.out.println(0); //to print out “0”
System.out.println(true); //to print out “true”
public class Lesson4
{
public static void main(String[] args)
{
final int A = 3, B = 10;
System.out.println(A+A+A+B); // can be different
System.out.println(A-B);// can be different
System.out.println(A*B);// can be different
System.out.println(B/(A/A));// can be different
System.out.println(B%A);
System.out.println(A>B);// can be different
System.out.println(A<B);// can be different
}
}

42. Operator Description Example
= assigns values from right side operands to left side operands a=b
+= adds right operand to the left operand and assigns the result
to left
a+=b is same as a=a+b
-= subtracts the right operand from the left operand and assigns
the result to left operand
a-=b is same as a=a-b
*= multiplies the left operand by the right operand and assigns
the result to the left operand
a*=b is same as a=a*b
/= divides the left operand by the right operand and assigns the
result to the left operand
a/=b is same as a=a/b
%= calculates the modulus using two operands and assigns the
result to the left operand
a%=b is same as a=a%b
Operator Description
& Bitwise AND
| Bitwise OR
^ Bitwise exclusive OR
<< left shift
>> right shift

43. if-else
if-else

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if switch
if switch
switch

46. public class Exercise5
{
public static void main(String[] args){
int x = 0;
System.out.println("Value is: " + x);
if(x%2 == 0)
{
System.out.println("Even!");
} else {
System.out.println("Out!");
}
}
}

47. public class Lesson5
{
public static void main(String[] args)
{
final double NUMBER = 24.18;
int flag = 0;
System.out.print("Initial value of flag is: ");
System.out.println(flag);
System.out.print("Initial value of NUMBER is: ");
System.out.println(NUMBER);
if(NUMBER > 0)
flag = 1;
else
if(NUMBER < 0)
flag = 2;
else
flag = 0;
switch(flag)
{
case 1: System.out.println("NUMBER is POSITIVE.");
break;
case 2: System.out.println("NUMBER is NEGATIVE.");
break;
case 0: System.out.println("NUMBER is ZERO!");
break;
}
System.out.print("Final value of flag is: ");
System.out.println(flag);
System.out.print("Final value of NUMBER is: ");
System.out.println(NUMBER);
}
}

48. 1. if (a == 5) {
b += 3;
} else {
if (b > 4) {
c = 3;
}
2. if (a == 0) {
b = 1;
} else {
if (a == 1) {
b = 0;
} else {
b = -1;
}
}
3. if (a == 2) {
b = 10;
} else {
b = 35;
}
c = true;
1. switch (sides) {
case 3: polygon = "Triangle"; break;
case 4: polygon = "Quadrilateral"; break;
case 5: polygon = "Pentagon"; break;
case 6: polygon = "Hexagon"; break;
case 7: polygon = "Heptagon"; break;
case 8: polygon = "Octagon"; break;
case 9: polygon = "Nonagon"; break;
case 10: polygon = "Decagon"; break;
}

49. 2. switch (answer) {
case ‘A’:
case ‘a’:
points+=100;
break;
case ‘B’:
case ‘b’:
points+=200;
break;
case ‘C’:
case ‘c’:
points-=100;
break;
default:
points -= 200;
}

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for
while
do-while

55. for
while do-while
Are we
there
yet?
Condition
If no,
Repeat
If yes,
Halt Loop
Walk

57. public class Exercise6
{
public static void main(String[] args){
for(int i = 1; i < 10; i++){
System.out.print(i);
System.out.print(" ");
}
}
}
public class Lesson6
{ public static void main(String[] args)
{ int counter = 0;
for(counter = 1; counter<=20; counter++)
{ System.out.print(counter * 4+ " ");
if(counter%5==0)
System.out.println();
}
}
}
System.out.print(counter * 3+ " ");
if(counter%10==0)
System.out.println();

58. (int counter = 5; counter >=0 ;counter--) {
System.out.println(counter);
}

59. continue;

60. *******
******
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*

61. 1******
12*****
123****
1234***
12345**
123456*
1234567

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65. import java.io.*;
public class Exercise7
{
public static void main(String[] args)
{
BufferedReader dataIn=new BufferedReader(new
InputStreamReader(System.in));
int x = 0;
x = 10;
if(x%2==0)
System.out.println("Multiple of 2");
else
System.out.println("NOT a multiple of 2");
}
}

66. if(x%2==0)
System.out.println("Even number");
else
System.out.println("Odd number");
import java.io.*;
public class Lesson7
{
public static void main(String[] args)
{
BufferedReader dataIn=new BufferedReader(new
InputStreamReader(System.in));
int x = 0;
String Str_1;
System.out.print("Enter an integer value: ");
try
{
Str_1=dataIn.readLine();
x=Integer.parseInt(Str_1);
}
catch(Exception e)
{
System.out.println("Error reported");
}
if(x%5==0)
System.out.println("Number is a multiple of 5.");
else
System.out.println("Number is NOT a multiple of 5");
}
}

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73. public class Exercise8
{
public static void main(String[] args){
AccessMe access = new AccessMe();
System.out.println(access.printme());
}
}

74. public class DRINKCONTAINER
{
private String BRAND, COLOR;
private final double CAPACITY = 10.0;
public double AMOUNTCONTAINED = 0.0;
public double getContents()
{
return AMOUNTCONTAINED;
}
public String getBrand()
{
return BRAND;
}
public String getColor()
{
return COLOR;
}
public void setBrand(String str)
{
BRAND = str;
}
public void setColor(String str)
{
COLOR = str;
}
public void throwContents()
{
AMOUNTCONTAINED = 0;
}
public void addContents(double x)
{
double temp;
temp = AMOUNTCONTAINED + x;
if(temp>=CAPACITY)
{
System.out.println("Maximum Capacity reached.");
AMOUNTCONTAINED = CAPACITY;
}
else
{
AMOUNTCONTAINED = temp;
}
}
}
BRAND and COLOR
as String
CAPACITY in liters
(final double) = 10.0
AMOUNTCONTAINE
D (a double that will
tell how many liters is
already inside a
DRINKCONTAINER
object) that should not
getContents() –
returns
AMOUNTCONTAIN
getColor() – returns
COLOR
setBrand(String str) –
sets the value of
BRAND equal to str
setColor(String str) –
sets the value of
COLOR equal to str
throwContent
s() – sets
AMOUNTCO
NTAINED to
0
addContents(double x) – adds
the argument passed to the
value of
AMOUNTCONTAINED. Again,
AMOUNTCONTAINED should
not exceed CAPACITY
getBrand() – returns
BRAND

75. public class Container_Controller {
public static void main(String[] args) {
DRINKCONTAINER dc= new DRINKCONTAINER();
System.out.println("Setting container color to
black."); dc.setColor("BLACK");
System.out.println("Setting brand to BRAND X.");
dc.setBrand("BRAND X");
System.out.println("Adding 9 liters of content..");
dc.addContents(9);
System.out.println("Adding 2 liters of content..");
dc.addContents(2);
System.out.println("Adding half liter of
content.."); dc.addContents(9);
System.out.println("CONTAINER DETAILS: ");
System.out.println("color: "+dc.getColor());
System.out.println("brand: "+dc.getBrand());
System.out.println("contents: "+dc.getContents() + "
liters");
System.out.println("Emptying container...");
dc.throwContents();
System.out.println("Container contents:
"+dc.getContents() + " liters");
}
}
dc.setColor("BLACK"); //
dc.setBrand("BRAND X"); //
dc.addContents(9); //

76. dc.addContents(2); //
// 10.0,
// 10.0 “spilt”
// 10.0
dc.addContents(9); //

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public class Puppy{
public Puppy(){
}
public Puppy(String name){
// This constructor has one parameter, name.
}
}

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82. int [] INTARRAY=new int [30];
int i;
double DOUBLEAVERAGE = 0.0;
double [] DOUBLEARRAY=new double [30];

83. INTARRAY
DOUBLEAVERAGE
DOUBLEARRAY
INTARRAY
DOUBLEAVERAGE

84. public class Exercise9
{
public static void main(String[] args)
{
int [] INTARRAY=new int [10];
int i;
for(i = 1;i<5;i++)
{
INTARRAY[i] = i * 2;
}
for(i = 1;i<5;i++)
{
System.out.println(INTARRAY[i]);
}
}
}
public class Lesson9
{
public static void main(String[] args)
{
int [] INTARRAY=new int [30];
int i;
double DOUBLEAVERAGE = 0.0;
double [] DOUBLEARRAY=new double [30];
for(i = 0;i<30;i++)
{
INTARRAY[i] = (i + 1) * 3;
DOUBLEAVERAGE = DOUBLEAVERAGE + INTARRAY[i];
}
DOUBLEAVERAGE/=30;
for(i = 0;i<30;i++)
{
DOUBLEARRAY[i] = INTARRAY[i] - DOUBLEAVERAGE;
}
System.out.println("MULTIPLE DIFFERENCE");
for(i = 0;i<30;i++)
{
System.out.println(INTARRAY[i]+"
"+DOUBLEARRAY[i]);
}
}
}

85. public class Array1
{
public Array1() { }
public static void main(String[] args){
String [] MySubjects = {"Math", "Science",
"English"};
String [] MyTeachers = {"Teacher1", "Teacher2",
"Teacher3"};
System.out.print("Here are my subjects: ");
System.out.print("My favorite subject is:
"+MySubjects[1]);
System.out.print("My favorite teacher is:
"+MyTeachers[2]);
}
}

87. dataType[] arrayRefVar;
dataType[] arrayRefVar[]
arrayRefVar = new dataType[arraySize]
dataType[] arrayREfVar = new dataType[arraySize]
dataType[] arrayRefVar = {value 0, value 1, …, valuen];

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92. import javax.swing.*;
import java.awt.*;
public class Lesson10
{
public static void main(String[] args)
{
JFrame f1 = new JFrame("Joy de Jesus");
JPanel p1 = new JPanel();
JPanel p2 = new JPanel();
JPanel p3 = new JPanel();
JPanel p4 = new JPanel();
p1.setLayout(new GridLayout(2,2));
p2.setLayout(new GridLayout(2,2));
p3.setLayout(new GridLayout(2,2));
p4.setLayout(new GridLayout(2,2));
JButton b1 = new JButton("1");
p1.add(new JButton(" "));
p1.add(new JButton(" "));
p1.add(new JButton(" "));

93. p1.add(new JButton(" "));
p2.add(new JButton(" "));
p2.add(new JButton(" "));
p2.add(new JButton(" "));
p2.add(p1);
p3.add(new JButton(" "));
p3.add(new JButton(" "));
p3.add(new JButton(" "));
p3.add(p2);
p4.add(new JButton(" "));
p4.add(new JButton(" "));
p4.add(new JButton(" "));
p4.add(p3);
f1.setContentPane(p4);
f1.pack();
f1.show();
}
}
byte[] bytes = <any code generating byte array>
String content = new String(bytes);
readAllBytes() Files
byte[] bytes = Files.readAllBytes(<Path object>);

94. Path path = file.toPath();
File file = new File(uri);
String uri = resource.getFile();
ClassLoader
URL resource = classLoader.getResource(<string path and
file>);
ClasssLoader
getSystemClassLoader()
ClassLoader classLoader = ClassLoader.getSystemClassLoader();

96. package app.book.vc;
import app.book.model.Book;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import app.book.service.*;
public class GuiBook implements ActionListener {
private Book book;
private JPanel labelPanel = new JPanel();
private JPanel contentPanel = new JPanel();
private JPanel buttonPanel = new JPanel();
private static final String PREVIOUS_PAGE_BUTTON_LABEL = "Previous Page";
private static final String NEXT_PAGE_BUTTON_LABEL = "Next Page";
private JLabel labelPage = new JLabel();
private JTextArea labelContent = new JTextArea();
// private JScrollPane scrollPaneContent = new JScrollPane();
private JButton btnPrevPage = new JButton(PREVIOUS_PAGE_BUTTON_LABEL);
private JButton btnNextPage = new JButton(NEXT_PAGE_BUTTON_LABEL);
private BookService bookService;
package app.book.vc;
public class BookController {
public static void main(String args[]){
new GuiBook();
}
}

97. public GuiBook() {
String[] authors = {"Mrs. Goose"};
book = new Book("Title", 4, authors);
labelPage.setText(String.valueOf(book.getCurrentPage()));
labelPanel.add(labelPage);
// contentPanel.add(scrollPaneContent);
contentPanel.setBackground(Color.white);
contentPanel.setSize(360, 500);
contentPanel.add(labelContent);
btnPrevPage.addActionListener(this);
btnNextPage.addActionListener(this);
buttonPanel.add(btnPrevPage);
buttonPanel.add(btnNextPage);
buttonPanel.setSize(360,60);
JFrame jFrame = new JFrame("");
jFrame.add(labelPanel, BorderLayout.NORTH);
jFrame.add(contentPanel, BorderLayout.CENTER);
jFrame.add(buttonPanel, BorderLayout.SOUTH);
jFrame.setSize(360,560);
jFrame.show();
jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jFrame.setResizable(false);
bookService = new BookServiceImpl();
labelContent.setText(bookService.turnPage(book.getCurrentPage()));
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals(NEXT_PAGE_BUTTON_LABEL)) {
book.turnPageForward();
}
if (e.getActionCommand().equals(PREVIOUS_PAGE_BUTTON_LABEL)) {
book.turnPageBackward();
}
labelPage.setText(String.valueOf(book.getCurrentPage()));
labelContent.setText(bookService.turnPage(book.getCurrentPage()));
}
}

98. package app.book.model;
public class Book extends ReadingMaterial {
private String[] authors;
public Book(String title, int totalPage, String authors[]) {
super(title, totalPage);
this.authors = authors;
}
public String[] getAuthors() {
return authors;
}
//override setCurrentPage, allow changing of page when selected page is
within bounds
public void setCurrentPage(int selectedPage) {
if (selectedPage > 0 && selectedPage <= getTotalPage()) {
super.setCurrentPage(selectedPage);
} else {
System.out.println("Invalid page " + selectedPage + ".");
}
}
}
package app.book.model;
public class ReadingMaterial {
private String title;
private int totalPage;
private int currentPage = 1;
public String getTitle() {
return title;
}
public int getTotalPage() {
return totalPage;
}
public int getCurrentPage() {
return currentPage;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
public int turnPageForward(){
if (this.currentPage < this.totalPage) {
this.setCurrentPage(this.currentPage + 1);
}
return this.currentPage;
}

99. public int turnPageBackward() {
if (getCurrentPage() > 1) {
this.setCurrentPage(getCurrentPage() - 1);
}
return this.currentPage;
}
public int turnPageForward(int skipCount){
if (this.currentPage < this.totalPage) {
if (this.currentPage + skipCount > this.totalPage) {
this.setCurrentPage(this.totalPage);
}if (this.currentPage + skipCount < 1) {
this.setCurrentPage(1);
}
else {
this.setCurrentPage(this.currentPage + skipCount);
}
}
return this.currentPage;
}
public ReadingMaterial(String title, int totalPage) {
this.title = title;
this.totalPage = totalPage;
}
}
package app.book.service;
public interface BookService {
String turnPage(int page);
}

100. package app.book.service;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
public class BookServiceImpl implements BookService {
@Override
public String turnPage(int page) {
String content = "";
ClassLoader classLoader = ClassLoader.getSystemClassLoader();
URL resource = classLoader.getResource("txt/" + page);
String uri = resource.getFile();
File file = new File(uri);
Path path = file.toPath();
try {
byte[] bytes = Files.readAllBytes(path);
content = new String(bytes);
} catch (IOException e) {
e.printStackTrace();
}
return content;
}
}

101. 1 1
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4 4
4 4
pack() show()

103. o
o
o
o
o
o
o