Java socket 入门编程实例

 这是一个C/S之间通信的例子,在JDK1.4下测试通过.
//服务器端源程序tcpserver.java
import java.io.*;
import java.net.*;
public class tcpserver
{
    public static void main(String[] args) throws  IOException
    {
        ServerSocket svrsoc=null;
        Socket soc=null;
        DataInputStream in=null;
        PrintStream out=null;
        InetAddress clientIP=null;
        String str=null;
        try
        {
            svrsoc=new ServerSocket(8000);
            System.out.println("Server start....");
            soc=svrsoc.accept();
           
            in=new DataInputStream(soc.getInputStream());
            out=new PrintStream(soc.getOutputStream());
            clientIP=soc.getInetAddress();
            System.out.println("Client's IP address:"+clientIP);
            out.println("welcome.....");
            str=in.readLine();
            while (!str.equals("quit"))
            {