chatclient.java

java 做的聊天用工具 很不错哦！

import java.io.*;
import java.net.*;

public class chatClient
{
	public static void main(String[] str)
	{
	    String serverName="";
		if (str.length>=1)serverName=str[0];
		else {
			System.out.println("You must provide a server Name you want to connect to,");
			System.out.println("And run your program by input in Dos Prompt Like this:");
			System.out.println("java chatClient serverName");
			System.exit(0);
		}
        Socket cltSoc;
        ObjectOutputStream objOut=null;
        ObjectInputStream objIn=null;
        try{
			InetAddress address=InetAddress.getByName(serverName);
			cltSoc=new Socket(address,6666);
			objOut=new ObjectOutputStream(cltSoc.getOutputStream());
            objIn=new ObjectInputStream(cltSoc.getInputStream());
            System.out.println("Connected to the server successfully...");
            System.out.println("If you want to exit this program, type 'QUIT' !");
            
        }catch(Exception e){System.exit(0);}
		
		getMsg get=new getMsg(objIn);
		get.start();
		sendMsg send =new sendMsg(objOut);
		send.start();
	}
}
class getMsg extends Thread
{

    ObjectInputStream objIn;
    public getMsg(ObjectInputStream in)
    {
        objIn=in;
    }
    public void run()
    {
        String strMsg="";
        while(true)
        {
            try{
            strMsg=(String)objIn.readObject();
            System.out.println("The server said:"+strMsg);
			if (strMsg.equals("QUIT"))System.exit(0);
            
            }catch(Exception e){}
        }
    }
}
class sendMsg extends Thread
{
    ObjectOutputStream objOut;
    public sendMsg(ObjectOutputStream out)
    {
        objOut=out;
    }
    public void run()
    {
        String strMsg="";
		while(true)
		{
			try{
			strMsg=(new BufferedReader(new InputStreamReader(System.in))).readLine();
			objOut.writeObject(strMsg);
			if (strMsg.equals("QUIT"))System.exit(0);			
			}catch(Exception e){}
			//System.out.println(strMsg);
		}
    }
	
}