Chatt

import import import import

java.awt.event.*; java.awt.*; java.io.*; java.net.*;

public class ServerFrame extends Frame implements Runnable { Button send,end; TextArea ta; TextField tf; Panel p1,p2; Thread t; DatagramSocket ds; int clientport=789,serverport=790; InetAddress ia; byte buffer1[]=new byte[1024]; byte buffer2[]=new byte[1024]; public ServerFrame() { try{ ds=new DatagramSocket(serverport); ia=InetAddress.getLocalHost(); }catch(Exception e){System.out.println(e.getMessage());} t=new Thread(this); t.start(); send=new Button("Send"); end=new Button("End"); ta=new TextArea(5,40); tf=new TextField(); p1=new Panel(); p2=new Panel(); setLayout(new BorderLayout()); p1.setLayout(new GridLayout(1,2)); p2.setLayout(new GridLayout(2,1)); add(ta,BorderLayout.CENTER); p1.add(send); p1.add(end); p2.add(tf); p2.add(p1); add(p2,BorderLayout.SOUTH); send.addActionListener(new MyClass()); end.addActionListener(new MyClass()); addWindowListener(new WindowClass());

} public void run() { try { while(true) { DatagramPacket p=new DatagramPacket(buffer1,buffer1.length); ds.receive(p); String str=new String(p.getData(),0,p.getLength()); if(str.equals("end")||str.equals("End")||str.equals("END")) ta.append("Good Bye............");

}

else ta.append(str+"\n");

}catch(Exception e){System.out.println(e.getMessage());} } public class MyClass implements ActionListener { public void actionPerformed(ActionEvent ae) { if(ae.getSource()==end) System.exit(0); else if(ae.getSource()==send) { try { String str=tf.getText(); buffer2=str.getBytes(); ds.send(new DatagramPacket(buffer2,str.length(),ia,clientport)); tf.setText(""); if(str.equals("end")||str.equals("End")||str.equals("END")) System.exit(0); }catch(Exception e){System.out.println(e.getMessage());} } } } class WindowClass extends WindowAdapter { public void windowClosing(WindowEvent we) { System.exit(0); } } public static void main(String agrs[]) { ServerFrame sf=new ServerFrame(); sf.setSize(200,250); sf.setVisible(true); } }

import import import import

java.awt.event.*; java.awt.*; java.io.*; java.net.*;

public class ClientFrame extends Frame implements Runnable { Button send,end; TextArea ta; TextField tf; Panel p1,p2; Thread t; byte buffer1[]=new byte[1024]; byte buffer2[]=new byte[1024]; DatagramSocket ds; int clientport=789,serverport=790; InetAddress ia; public ClientFrame() { try{ ds=new DatagramSocket(clientport); ia=InetAddress.getLocalHost(); }catch(Exception e){System.out.println(e.getMessage());} t=new Thread(this); t.start(); send=new Button("Send"); end=new Button("End"); ta=new TextArea(5,40); tf=new TextField(); p1=new Panel(); p2=new Panel(); setLayout(new BorderLayout()); p1.setLayout(new GridLayout(1,2)); p2.setLayout(new GridLayout(2,1)); add(ta,BorderLayout.CENTER); p1.add(send); p1.add(end); p2.add(tf); p2.add(p1); add(p2,BorderLayout.SOUTH); send.addActionListener(new MyClass()); end.addActionListener(new MyClass()); addWindowListener(new WindowClass()); } public void run() { try { while(true) { DatagramPacket p=new DatagramPacket(buffer2,buffer2.length); ds.receive(p); String str=new String(p.getData(),0,p.getLength()); if(str.equals("end")||str.equals("End")||str.equals("END")) ta.append("Good Bye............"); else ta.append(str+"\n"); } }catch(Exception e){System.out.println(1);} } public class MyClass implements ActionListener

{ public void actionPerformed(ActionEvent ae) { if(ae.getSource()==end) System.exit(0); else if(ae.getSource()==send) { try { String str=tf.getText(); buffer1=str.getBytes(); ds.send(new DatagramPacket(buffer1,str.length(),ia,serverport)); tf.setText(""); if(str.equals("end")||str.equals("End")||str.equals("END")) System.exit(0); }catch(Exception e){System.out.println(e.getMessage());} } } } class WindowClass extends WindowAdapter { public void windowClosing(WindowEvent we) { System.exit(0); } } public static void main(String agrs[]) { ClientFrame cf=new ClientFrame(); cf.setSize(200,250); cf.setVisible(true); } }