Chatting Menggunakan Gambar Pada Java
Chatting menggunakan java sudah
dibahas sebelumnya, sekarang bagaimana menjalankan chatting java dengan
menampilkan gambar. Ada 2 program yang harus dibuat, yaitu program chat server
dan program chat client. Untuk program chat server, listing programnya adalah:
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;
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();
} 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 +
":";
}
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;
public ClientThread(Socket socket) {
id = ++uniqueId;
this.socket = socket;
System.out.println("Menciptakan Object Input/Output Streams");
try {
sOutput = new
ObjectOutputStream(socket.getOutputStream());
sInput = new
ObjectInputStream(socket.getInputStream());
String message = (String)
sInput.readObject();
username =
message.split("~")[1];
System.out.println(username +
" masuk.");
} catch (IOException e) {
System.out.println("Exception creating new Input/output Streams:
" + e);
} catch (ClassNotFoundException e)
{
}
}
@Override
public void run() {
boolean keepGoing = true;
while (keepGoing) {
String message;
try {
message =
sInput.readObject().toString();
} catch (IOException e) {
System.out.println(username
+ " Exception reading Streams: " + e);
break;
} catch (ClassNotFoundException
e2) {
break;
}
String type =
message.split("~")[0];
String pengirim =
message.split("~")[1];
String text =
message.split("~")[2];
String kepada =
message.split("~")[3];
String response;
switch (type) {
case "postText":
response =
"recieveText~" + pengirim + "~" + text + "~" +
kepada + "~\n";
send(response);
break;
case
"postPrivateText":
response =
"recievePrivateText~" + pengirim + "~" + text +
"~" + kepada + "~\n";
send(response);
break;
case "login":
response =
"login~" + pengirim + "~" + text + "~" + kepada +
"~\n";
send(response);
break;
case "logout":
response = "logout~" + pengirim +
"~" + text + "~" + kepada + "~\n";
send(response);
break;
case "list":
response =
"list~server~" + getClients() + "~ ~ ~ ~ ~\n";
send(response);
break;
}
}
remove(id);
close();
}
private void close() {
try {
if (sOutput != null) {
sOutput.close();
}
} catch (Exception e) {
}
try {
if (sInput != null) {
sInput.close();
}
} catch (Exception e) {
}
try {
if (socket != null) {
socket.close();
}
} catch (Exception e) {
}
}
private boolean writeMsg(String msg) {
if (!socket.isConnected()) {
close();
return false;
}
try {
sOutput.writeObject(msg);
} catch (IOException e) {
System.out.println("Error sending message to " + username);
System.out.println(e.toString());
}
return true;
}
}
}
Untuk program chat clientnya:
import
java.io.IOException;
import
java.io.ObjectInputStream;
import
java.io.ObjectOutputStream;
import
java.net.Socket;
import
java.util.ArrayList;
import
java.util.List;
import
java.util.logging.Level;
import
java.util.logging.Logger;
import
javax.swing.ImageIcon;
import
javax.swing.JLabel;
import
javax.swing.table.DefaultTableModel;
public
class ChatClient extends javax.swing.JFrame {
/**
* Creates new form ChatClient
*/
private ObjectInputStream input;
private ObjectOutputStream output;
private Socket socket;
private String server, username;
private int port;
private List<String> clients;
public ChatClient() {
clients = new ArrayList();
initComponents();
}
public boolean start() {
try {
socket = new Socket(server, port);
} catch (Exception ec) {
System.out.println("Error
connectiong to server:" + ec);
return false;
}
String msg = "Connection accepted
" + socket.getInetAddress() + ":" + socket.getPort();
System.out.println(msg);
try {
input = new
ObjectInputStream(socket.getInputStream());
output = new
ObjectOutputStream(socket.getOutputStream());
} catch (IOException eIO) {
System.out.println("Exception
creating new Input/output Streams: " + eIO);
return false;
}
new
ChatClient.ListenFromServer().start();
try {
output.writeObject("login~" + username + "~" +
username + " sedang login...~server~\n");
output.writeObject("list~" + username + "~" +
username + " sedang login...~server~\n");
} catch (IOException eIO) {
System.out.println("Exception
doing login : " + eIO);
disconnect();
return false;
}
return true;
}
private void disconnect() {
try {
// TODO add your handling code
here:
output.writeObject("logout~" + username + "~" +
username + " sudah logout...~Server~\n");
} catch (IOException ex) {
//Logger.getLogger(ChatClient.class.getName()).log(Level.SEVERE, null,
ex);
}
try {
if (input != null) {
input.close();
}
} catch (Exception e) {
}
try {
if (output != null) {
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();
kirimButton = new
javax.swing.JButton();
lbljpg
= new javax.swing.JLabel(new ImageIcon("D:/mega.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);
}
});
kirimButton.setText("Kirim");
kirimButton.addActionListener(new
java.awt.event.ActionListener() {
public void
actionPerformed(java.awt.event.ActionEvent evt) {
kirimButtonActionPerformed(evt);
}
});
jLabel2.setText("Server");
serverTextField.setText("10.17.193.175");
jLabel3.setText("Port");
portTextField.setText("9999");
masukButton.setText("Masuk");
masukButton.addActionListener(new
java.awt.event.ActionListener() {
public void
actionPerformed(java.awt.event.ActionEvent evt) {
masukButtonActionPerformed(evt);
}
});
jLabel4.setText("Username");
usernameTextField.setText("Mega");
javax.swing.GroupLayout layout = new
javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING,
layout.createSequentialGroup()
.addComponent(postTextField)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(kirimButton))
.addComponent(jScrollPane1))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 259,
javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(lbljpg)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(serverTextField, javax.swing.GroupLayout.PREFERRED_SIZE,
167, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(portTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 46,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jLabel4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(usernameTextField, javax.swing.GroupLayout.DEFAULT_SIZE,
194, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(masukButton)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING,
layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(lbljpg)
.addComponent(jLabel2)
.addComponent(serverTextField, javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3)
.addComponent(portTextField, javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(masukButton)
.addComponent(jLabel4)
.addComponent(usernameTextField, javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane2,
javax.swing.GroupLayout.Alignment.TRAILING,
javax.swing.GroupLayout.DEFAULT_SIZE, 427, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(jScrollPane1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(postTextField, javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(kirimButton))))
.addContainerGap())
);
pack();
}// </editor-fold>
private void
masukButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
this.server =
serverTextField.getText();
this.port = new
Integer(portTextField.getText());
this.username =
usernameTextField.getText();
start();
}
private void
kirimButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
try {
String message =
"postText~" + username + "~" + postTextField.getText() +
"~all~\n";
output.writeObject(message);
postTextField.setText("");
}
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/plaf.html
*/
try {
for
(javax.swing.UIManager.LookAndFeelInfo info :
javax.swing.UIManager.getInstalledLookAndFeels()) {
if
("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(ChatClient.class.getName()).log(java.util.logging.Level.SEVERE,
null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(ChatClient.class.getName()).log(java.util.logging.Level.SEVERE,
null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(ChatClient.class.getName()).log(java.util.logging.Level.SEVERE,
null, ex);
} catch
(javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(ChatClient.class.getName()).log(java.util.logging.Level.SEVERE,
null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new
Runnable() {
@Override
public void run() {
new
ChatClient().setVisible(true);
}
});
}
// 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];
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 + " sudah
logout..." + "\n");
clients.remove(pengirim);
break;
case "list":
setTable(text);
break;
}
} catch (IOException e) {
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 semua komputer terhubung
dengan internet, Jalankan program chat server, biarkan sampai chat client teman
terhubung:
Kemudian jalankan program chat
client pada komputer teman, pada kolom server: masukkan IP pada komputer
server, port: “9999” dan Username dengan nama kita sendiri “Mega” kemudian
tekan tombol “Masuk”:
Tunggu sampai koputer teman yang
lain terhubung, setelah terhubung, anda sudah dapat menjalankan chatting
bersama-sama: