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1、客户端代码：

package javase.net.socket;  

import java.io.DataInputStream;  
import java.io.DataOutputStream;  
import java.io.IOException;  
import java.io.InputStream;  
import java.io.OutputStream;  
import java.net.Socket;  
import java.net.UnknownHostException;  

public class TCPClient {  
    public static void main(String[] args) {  
        try {  
            Socket socket = new Socket("192.168.1.123", 8888);  
            // 向服务器端发送数据  
            OutputStream os =  socket.getOutputStream();  
            DataOutputStream bos = new DataOutputStream(os);  
            bos.writeUTF("nide mingzi ");  
            bos.flush();  

            // 接收服务器端数据  
            InputStream is = socket.getInputStream();  
            DataInputStream dis = new DataInputStream(is);  
            System.out.println(dis.readUTF());  
        } catch (UnknownHostException e) {  
            e.printStackTrace();  
        } catch (IOException e) {