The document describes a program for creating a multi-client chatting application using Java Swing. It involves creating a chat server class with methods for accepting client connections, handling message passing between clients, and maintaining a list of connected clients. It also involves creating a chat client class with methods for connecting to the server, sending and receiving messages, and displaying messages and a list of connected clients. The program listing includes the code for the ChatServer and ChatClient classes to implement the client-server architecture for a graphical multi-user chat application.
4Developers: Michał Szczepanik- Kotlin - Let’s ketchup itPROIDEA
Niektóre rzeczy trzeba dobrze przyprawić żeby były lepsze ... tak samo jest z pisaniem aplikacji na Androida. Jako programiści zaczynamy mieć czasami dość Javy i chcielibyśmy się przerzucić na coś lepszego i czytelniejszego. Takim rozwiązaniem może okazać się Kotlin. O zaletach języka i o tym jak może ułatwić pracę z Androidem dowiecie się podczas tego wykładu.
Czym się różnie JMS od AMQP? Co to jest queue? Co to jest topic? Jak zlecać zadania w przyszłości używając kolejek? Jak się do tego podpiąć z Javy? Na te i inne pytania postaram się odpowiedzieć na mojej prezentacji.
soft-shake.ch - Java SE 7: The Fork/Join Framework and Project Coinsoft-shake.ch
Julien Ponge
This talk introduces part of the Java SE 7 novelties. The fork/join framework aims at making parallel programming simpler, while Project Coin brings a set of subtle yet useful changes to the Java programming language.
http://soft-shake.ch/2011/conference/sessions/java/2011/09/06/java7.html
Hi, I need some one to help me with Design a client-server Chat so.pdffashiongallery1
Given the statement:
For every integer n > 2, n^2 – 6n + 1 > 0.
Is the text below a correct proof of the statement? (YES or NO? Explains your choice.)
Proof: By induction
Let S[n] be the statement that n^2 – 6n + 1 > 0
We show that if S[k] is true for some integer k > 2 then S[k + 1] is also true.
Suppose that k^2 – 6k + 1 > 0 (Induction Hypothesis)
Then (k + 1)^2 – 6(k + 1) + 1 = k^2 + 2k + 1 – 6k – 6 + 1 = (k^2 – 6k + 1) + (2k – 5)
Both bracketed expressions are positive: the first by the Induction Hypothesis, and the second
because k > 2. So S[k + 1] is true.
By PMI, S[n] is true for all n > 2.
Solution
There is nothing wrong in your proof.
BUT given statement is for every integer n > 2, n^2 - 6n +1 > 0
This is False.
Reason: for n = 3
3^2 - 6*3 + 1 = -8
-8 is not greater than zero.
So Given statement is wrong.
It would have been true if the statement is
for every integer n > 5, n^2 - 6n + 1 > 0
Let me know in the comments, if you have any doubt..
4Developers: Michał Szczepanik- Kotlin - Let’s ketchup itPROIDEA
Niektóre rzeczy trzeba dobrze przyprawić żeby były lepsze ... tak samo jest z pisaniem aplikacji na Androida. Jako programiści zaczynamy mieć czasami dość Javy i chcielibyśmy się przerzucić na coś lepszego i czytelniejszego. Takim rozwiązaniem może okazać się Kotlin. O zaletach języka i o tym jak może ułatwić pracę z Androidem dowiecie się podczas tego wykładu.
Czym się różnie JMS od AMQP? Co to jest queue? Co to jest topic? Jak zlecać zadania w przyszłości używając kolejek? Jak się do tego podpiąć z Javy? Na te i inne pytania postaram się odpowiedzieć na mojej prezentacji.
soft-shake.ch - Java SE 7: The Fork/Join Framework and Project Coinsoft-shake.ch
Julien Ponge
This talk introduces part of the Java SE 7 novelties. The fork/join framework aims at making parallel programming simpler, while Project Coin brings a set of subtle yet useful changes to the Java programming language.
http://soft-shake.ch/2011/conference/sessions/java/2011/09/06/java7.html
Hi, I need some one to help me with Design a client-server Chat so.pdffashiongallery1
Given the statement:
For every integer n > 2, n^2 – 6n + 1 > 0.
Is the text below a correct proof of the statement? (YES or NO? Explains your choice.)
Proof: By induction
Let S[n] be the statement that n^2 – 6n + 1 > 0
We show that if S[k] is true for some integer k > 2 then S[k + 1] is also true.
Suppose that k^2 – 6k + 1 > 0 (Induction Hypothesis)
Then (k + 1)^2 – 6(k + 1) + 1 = k^2 + 2k + 1 – 6k – 6 + 1 = (k^2 – 6k + 1) + (2k – 5)
Both bracketed expressions are positive: the first by the Induction Hypothesis, and the second
because k > 2. So S[k + 1] is true.
By PMI, S[n] is true for all n > 2.
Solution
There is nothing wrong in your proof.
BUT given statement is for every integer n > 2, n^2 - 6n +1 > 0
This is False.
Reason: for n = 3
3^2 - 6*3 + 1 = -8
-8 is not greater than zero.
So Given statement is wrong.
It would have been true if the statement is
for every integer n > 5, n^2 - 6n + 1 > 0
Let me know in the comments, if you have any doubt..
Note Use Java Write a web server that is capable of processing only.pdffatoryoutlets
Many mathematical problems require the addition, subtraction, and multiplication of two
matrices. Write an ADT Matrix. You may use the following class definition. const int
MAX_ROWS = 10; const int MAX_COLS = 10; class MatrixType { public: MatrixType(); void
MakeEmpty(); void SetSize(int rowsSize, int colSize); void StoreItem(int item, int row, int col);
void Add(MatrixType otherOperand, MatrixType& result); void Sub(MatrixType otherOperand,
MatrixType& result); void Mult(MatrixType otherOperand, MatrixType& result); void
Print(ofstream& outfile); bool AddSubCompatible(MatrixType otherOperand); bool
MultCompatible(MatrixType otherOperand); private: int values[MAX_ROWS][MAX_COLS];
int numRows; int numCols; }; Before you start looking at how to implement this class, you must
determine and document the appropriate preconditions and postconditions for each operation.
Note that the class provides the member functions to allow the client to determine if the binary
matrix operations are possible. Before this class can become a permanent part of your program
library, it must be thoroughly tested. Write a menu driven testing program to test your
MatrixType. Test Driver The test driver should handle the following options. (See processing
notes for definition of ). GetNewMatrix Number of rows and number of columns are on the next
line. Values for each row and column AddMatrices Add first and second, leaving the result in the
third SubMatrices Subtract second from first, leaving the result in the third MultiplyMatrices
Multiply first and second, leaving the result in the third PrintMatrix Print the matrix one row per
line on DataOut Quit Processing Notes 1. is a number between 0 and 9. This value is used as an
index into an array of MatrixType. 2. The main function must include a Switch statement where
the case expression is a user-defined enumeration type. This means that the command is
recognized and its enumeration equivalent is sent back to be used in the case statement. 3. The
driver must ensure the preconditions of the member functions of MatrixType. Throw an
exception if an error occurs and continue processing.
Solution
#include
#include
using namespace std;
struct matrixType{
int matDimension;
int matValues[10][10];
};
class MatrixADT{
private:
matrixType resultMatrix;
public:
void intializeResultMatrix(int);
matrixType add(matrixType, matrixType);
matrixType subtract(matrixType,matrixType);
matrixType multiply(matrixType,matrixType);
void printResult();
};
matrixType MatrixADT::add(matrixType M1, matrixType M2){
}
matrixType MatrixADT::subtract(matrixType M1, matrixType M2){
}
matrixType MatrixADT::multiply(matrixType M1, matrixType M2){
}
void MatrixADT::intializeResultMatrix(int dim){
}
int main(){
MatrixADT maX;
matrixType M1, M2;
char op;
int dim;
maX.printResult();
}
void MatrixADT::printResult(){
int i,j;
for (i=0;i
for (j=0; j
cout<.
La transidentité, un sujet qui fractionne les FrançaisIpsos France
Ipsos, l’une des principales sociétés mondiales d’études de marché dévoile les résultats de son étude Ipsos Global Advisor “Pride 2024”. De ses débuts aux Etats-Unis et désormais dans de très nombreux pays, le mois de juin est traditionnellement consacré aux « Marches des Fiertés » et à des événements festifs autour du concept de Pride. A cette occasion, Ipsos a réalisé une enquête dans vingt-six pays dressant plusieurs constats. Les clivages des opinions entre générations s’accentuent tandis que le soutien à des mesures sociétales et d’inclusion en faveur des LGBT+ notamment transgenres continue de s’effriter.
Johnny Depp Long Hair: A Signature Look Through the Yearsgreendigital
Johnny Depp, synonymous with eclectic roles and unparalleled acting prowess. has also been a significant figure in fashion and style. Johnny Depp long hair is a distinctive trademark among the various elements that define his unique persona. This article delves into the evolution, impact. and cultural significance of Johnny Depp long hair. exploring how it has contributed to his iconic status.
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Introduction
Johnny Depp is an actor known for his chameleon-like ability to transform into a wide range of characters. from the eccentric Captain Jack Sparrow in "Pirates of the Caribbean" to the introspective Edward Scissorhands. His long hair is one constant throughout his evolving roles and public appearances. Johnny Depp long hair is not a style choice but a significant aspect of his identity. contributing to his allure and mystique. This article explores the journey and significance of Johnny Depp long hair. highlighting how it has become integral to his brand.
The Early Years: A Budding Star with Signature Locks
1980s: The Rise of a Young Heartthrob
Johnny Depp's journey in Hollywood began in the 1980s. with his breakout role in the television series "21 Jump Street." During this time, his hair was short, but it was already clear that Depp had a penchant for unique and edgy styles. By the decade's end, Depp started experimenting with longer hair. setting the stage for a lifelong signature.
1990s: From Heartthrob to Icon
The 1990s were transformative for Johnny Depp his career and personal style. Films like "Edward Scissorhands" (1990) and "Benny & Joon" (1993) saw Depp sporting various hair lengths and styles. But, his long, unkempt hair in "What's Eating Gilbert Grape" (1993) began to draw significant attention. This period marked the beginning of Johnny Depp long hair. which became a defining feature of his image.
The Iconic Roles: Hair as a Character Element
Edward Scissorhands (1990)
In "Edward Scissorhands," Johnny Depp's character had a wild and mane that complemented his ethereal and misunderstood persona. This role showcased how long hair Johnny Depp could enhance a character's depth and mystery.
Captain Jack Sparrow: The Pirate with Flowing Locks
One of Johnny Depp's iconic roles is Captain Jack Sparrow from the "Pirates of the Caribbean" series. Sparrow's long, dreadlocked hair symbolised his rebellious and unpredictable nature. The character's look, complete with beads and trinkets woven into his hair. was a collaboration between Depp and the film's costume designers. This style became iconic and influenced fashion trends and Halloween costumes worldwide.
Other Memorable Characters
Depp's long hair has also been featured in other roles, such as Ichabod Crane in "Sleepy Hollow" (1999). and Roux in "Chocolat" (2000). In these films, his hair added a layer of authenticity and depth to his characters. proving that Johnny Depp with long hair is more than a style—it's a storytelling tool.
Off-Screen Influenc
Is your favorite ring slipping and sliding on your finger? You're not alone. Must Read this Guide on What To Do If Your Ring Is Too Big as shared by the experts of Andrews Jewelers.
Care Instructions for Activewear & Swim Suits.pdfsundazesurf80
SunDaze Surf offers top swimwear tips: choose high-quality, UV-protective fabrics to shield your skin. Opt for secure fits that withstand waves and active movement. Bright colors enhance visibility, while adjustable straps ensure comfort. Prioritize styles with good support, like racerbacks or underwire tops, for active beach days. Always rinse swimwear after use to maintain fabric integrity.
MRS PUNE 2024 - WINNER AMRUTHAA UTTAM JAGDHANEDK PAGEANT
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From Stress to Success How Oakland's Corporate Wellness Programs are Cultivat...Kitchen on Fire
Discover how Oakland's innovative corporate wellness initiatives are transforming workplace culture, nurturing the well-being of employees, and fostering a thriving environment. From comprehensive mental health support to flexible work arrangements and holistic wellness workshops, these programs are empowering individuals to navigate stress effectively, leading to increased productivity, satisfaction, and overall success.
Have you ever wondered about the lost city of Atlantis and its profound connection to our modern world? Ruth Elisabeth Hancock’s podcast, “Visions of Atlantis,” delves deep into this intriguing topic in a captivating conversation with Michael Le Flem, author of the enlightening book titled “Visions of Atlantis.” This podcast episode offers a thought-provoking blend of historical inquiry, esoteric wisdom, and contemporary reflections. Let’s embark on a journey of discovery as we unpack the mysteries of ancient civilizations and their relevance to our present existence.
1. Membuat Program MultiClient Chatting Client-Server
Menggunakan Bahasa Pemrograman Java Berbasis Gambar
Oleh :
Yohana Damayanti
(061130701312)
6CD
JURUSAN TEKNIK KOMPUTER
POLITEKNIK NEGERI SRIWIJAYA
PALEMBANG
2. Chatting memungkinkan kita untuk selalu bisa berkomunikasi
walaupun kita tidak berada bersamanya di suatu tempat. Aplikasi chatting
merupakan suatu aplikasi yang memungkinkan pengguna (client)
berkomunikasi teks secara langsung (Real Time) dengan pengguna lain dengan
menggunakan media yang ada.
Java merupakan suatu bahasa pemograman yang multi platform dan
multi device. Java juga merupakan bahasa pemograman yang berorientasi objek
dan program java tersusun dari bagian yang disebut kelas.
Pada bagian ini, saya akan membuat aplikasi chatting berbasis grafis (seperti
tampilan foto) menggunakan bahasa pemograman java. pertama yang harus
dilakukan adalah menyetting alamat IP pada masing-masing PC. Kita menggunakan
satu server dan satu client.
Pertama yang harus dilakukan kita terlebih dahulu melakukan setting
alamat IP pada masing-masing client. Setelah melakukan konfigurasi IP pada
masing-masingi komputer kemudian kita juga harus memastikan bahwa firewall
pada masing-masing komputer harus diaktifkan karena pada beberapa kasus program
ini tidak dapat saling terkoneksi akibat firewall yang aktif pada sistem operasinya.
Berikut adalah listing program MultiClient Chatting Client-Server
berbasis grafis (gambar)
ChatServer.java
import java.io.*;
import java.net.*;
import java.util.*;
public class ChatServer {
private static int uniqueId;
private ArrayList<ChatServer.ClientThread> clients;
private int port;
private boolean keepGoing;
public ChatServer() {
this.port = 9999;
3. clients = new ArrayList();
}
public void start() {
keepGoing = true;
try {
ServerSocket serverSocket = new ServerSocket(port);
while (keepGoing) {
System.out.println("ChatServer waiting for Clients
on port " + port + ".");
Socket socket = serverSocket.accept();
if (!keepGoing) {
break;
}
ChatServer.ClientThread t = new
ChatServer.ClientThread(socket);
clients.add(t);
t.start();
send("login~" + t.username + "~" + t.username + "
sedang login...~Server~n");
}
try {
serverSocket.close();
for (int i = 0; i < clients.size(); ++i) {
ChatServer.ClientThread tc = clients.get(i);
try {
tc.sInput.close();
tc.sOutput.close();
tc.socket.close();
4. } catch (IOException ioE) {
}
}
} catch (Exception e) {
System.out.println("Exception closing the server
and clients: " + e);
}
} catch (IOException e) {
String msg = "Exception on new ServerSocket: " + e +
"n";
System.out.println(msg);
}
}
private synchronized void send(String message) {
for (int i = clients.size(); --i >= 0;) {
ChatServer.ClientThread ct = clients.get(i);
if (!ct.writeMsg(message)) {
clients.remove(i);
System.out.println("Disconnected Client " +
ct.username + " removed from list.");
}
}
}
private String getClients() {
String s = "";
for (ClientThread clientThread : clients) {
s += clientThread.username + ":";
5. }
s += "---";
System.out.println(s);
return s;
}
private synchronized void remove(int id) {
for (int i = 0; i < clients.size(); ++i) {
ChatServer.ClientThread ct = clients.get(i);
if (ct.id == id) {
clients.remove(i);
return;
}
}
}
public static void main(String[] args) {
ChatServer server = new ChatServer();
server.start();
}
private class ClientThread extends Thread {
private Socket socket;
private ObjectInputStream sInput;
private ObjectOutputStream sOutput;
private int id;
private String username;
13. output.close();
}
} catch (Exception e) {
}
try {
if (socket != null) {
socket.close();
}
} catch (Exception e) {
}
}
/**
* This method is called from within the constructor to
initialize the form.
* WARNING: Do NOT modify this code. The content of this
method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated
Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
viewTextArea = new javax.swing.JTextArea();
jScrollPane2 = new javax.swing.JScrollPane();
clientTable = new javax.swing.JTable();
postTextField = new javax.swing.JTextField();
14. kirimButton = new javax.swing.JButton();
lbljpg = new javax.swing.JLabel(new
ImageIcon("E:/rara.jpg"));
jLabel2 = new javax.swing.JLabel();
serverTextField = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
portTextField = new javax.swing.JTextField();
masukButton = new javax.swing.JButton();
jLabel4 = new javax.swing.JLabel();
usernameTextField = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE
);
viewTextArea.setEditable(false);
viewTextArea.setColumns(20);
viewTextArea.setLineWrap(true);
viewTextArea.setRows(5);
viewTextArea.setFocusable(false);
jScrollPane1.setViewportView(viewTextArea);
jScrollPane2.setViewportView(clientTable);
postTextField.addActionListener(new
java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent
evt) {
postTextFieldActionPerformed(evt);
}
20. } catch (IOException ex) {
Logger.getLogger(ChatClient.class.getName()).log(Level.SEVERE,
null, ex);
}
}
private void
postTextFieldActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
kirimButtonActionPerformed(evt);
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and
feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available,
stay with the default look and feel.
* For details see
http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/pla
f.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info :
javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
22. // Variables declaration - do not modify
private javax.swing.JTable clientTable;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JButton kirimButton;
private javax.swing.JButton masukButton;
private javax.swing.JTextField portTextField;
private javax.swing.JTextField postTextField;
private javax.swing.JTextField serverTextField;
private javax.swing.JTextField usernameTextField;
private javax.swing.JTextArea viewTextArea;
private JLabel lbljpg ;
// End of variables declaration
class ListenFromServer extends Thread {
@Override
public void run() {
while (true) {
try {
String msg = (String) input.readObject();
String res;
String type = msg.split("~")[0];
String pengirim = msg.split("~")[1];
String text = msg.split("~")[2];
23. String kepada = msg.split("~")[3];
switch (type) {
case "recieveText":
res = pengirim + ": " + text;
viewTextArea.setText(viewTextArea.getText() + res + "n");
break;
case "recievePrivateText":
res = pengirim + ": " + text;
if (kepada.equals(username)) {
viewTextArea.setText(viewTextArea.getText() + res + "n");
}
break;
case "login":
viewTextArea.setText(viewTextArea.getText() + pengirim + " sudah
login..." + "n");
clients.add(pengirim);
break;
case "logout":
viewTextArea.setText(viewTextArea.getText() + pengirim + " telah
logout..." + "n");
clients.remove(pengirim);
break;
case "list":
setTable(text);
break;
}
} catch (IOException e) {
24. System.out.println("Server has close the
connection: " + e);
break;
} catch (ClassNotFoundException e2) {
}
}
}
private void setTable(String text) {
int rows = text.split(":").length - 1;
Object[][] data = new Object[rows][1];
for (int i = 0; i < rows; i++) {
String t = text.split(":")[i];
data[i][0] = t;
}
String[] header = {"Clients"};
clientTable.setModel(new DefaultTableModel(data,
header));
}
}
}
Pastikan kita sudah terhubung ke internet. Lalu eksekusi program
menggunakan ctrl+1 dan ctrl+2, maka tampilan akan seperti berikut:
