Help what is the error

[scriptkiddie]

Hi friends,
I begin to learn java about a month ago. I just got a client server chat program.It compiles well and makes the server and client classes. But when running the server message is passed to the client . The vice versa is not happening. I dont know any details of socket programming. So please explain the program for me. Please. Thx in advance



SERVER


import java.net.*;
import java.io.*;
public class Server extends Thread
{
public static ServerSocket sc;
public String str;
public BufferedReader r1,r2;
public PrintStream w;
public Server(Socket s)
{
try
{
r1=new BufferedReader(new InputStreamReader(s.getInputStream()));
r2=new BufferedReader(new InputStreamReader(System.in));
w=new PrintStream(s.getOutputStream());
this.start();
for(;;)
{
str=r2.readLine();
w.println("server:"+str);
}
}
catch(Exception e)
{
System.out.println(e);
}
}
public static void main(String args[])
{
try
{
sc=new ServerSocket(4520);
new Server (sc.accept());
}
catch(Exception e)
{
System.out.println(e);
}}}





CLIENT




import java.net.*;
import java.io.*;
public class Client extends Thread
{
public Socket s;
public String str;
public BufferedReader r1,r2;
PrintStream w;
public Client()
{
try
{
InetAddress address=InetAddress.getLocalHost();
s=new Socket(address,4520);
r1=new BufferedReader(new InputStreamReader(s.getInputStream()));
}
catch(Exception e)
{
System.out.println(e);
}
}
public void run()
{
try
{
for(;;)
System.out.println(this.r1.readLine());
}
catch(Exception e)
{
System.out.println(e);
}
}
public static void main(String args[])
{
try
{
String ad=String.valueOf(InetAddress.getLocalHost())+":";
Client A=new Client();
A.r2=new BufferedReader(new InputStreamReader(System.in));
A.w=new PrintStream(A.s.getOutputStream());
A.start();
for(;;)
{
String s=A.r2.readLine();
A.w.println(ad+s);
}
}
catch(Exception e)
{
System.out.println(e);
}
}
}

[scriptkiddie]

One minute. The Smiley there isnt by me.(;)

[r035198x]

...I dont know any details of socket programming. So please explain the program for me....

..

So read a tutorial on socket programming. That will help you to understand the code and to write your own code too.

P.S:The smileys are there because you did not use code tags to post code.

[Dieter]

the problem is the smiley!

[Tolls]

That is a good point, though it may have nothing to do with the problem at hand (I have no idea, can't read unformatted code).

Why use this bizarre construct:

for(;;) {
// do something
}

?