chatclient.java

java的UDP聊天程序

import java.net.*;
import java.io.*;
public class chatclient{
  public static void main(String[] args)
  {
  	Socket soc=null;
  	DataInputStream in=null;
  	PrintStream out=null;
  	DataInputStream sysin=null;
  	String strin=null;
  	String strout=null;
  	try{
  	soc=new Socket(args[0],8000);
  	System.out.println("Conneting to the server...");
  	in=new DataInputStream(soc.getInputStream());
  	out=new PrintStream(soc.getOutputStream());
  	strin=in.readLine();
  	System.out.println("server said:"+strin);
  	sysin=new DataInputStream(System.in);
  	
  	while(true)
  	  {     System.out.print("client said:");
  	  	strout=sysin.readLine();
  		out.println(strout);
  		System.out.println("            |Waiting for Server's message...");
   		if (strout.equals("quit"))break;
	  	strin=in.readLine();
          	System.out.println("server said:"+strin);
  		
  	  } 
  	in.close();
  	out.close();
  	sysin.close();
  	soc.close();
  	System.exit(0);
  	}
  	catch(IOException e)
  	{
  		System.out.println("error:"+e);
  	}
  	
}
}