实现了基于TCP的Java Socket编程，功能很简单：客户端向服务器端输出一名话"connect"，服务器端接收输出到控制台并向客户端输出一名话"Hello",客户端接收并输出。

1.服务器端

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.ServerSocket;

import java.net.Socket;

public class TCPServer {

public static void main(String[] args) {

try {

ServerSocket serverSocket = new ServerSocket(8888);

Socket socket = serverSocket.accept();

// 读取客户端数据

InputStream info = socket.getInputStream();

DataInputStream dis = new DataInputStream(info);

System.out.println(dis.readUTF());

// 向客户端输出数据

OutputStream os = socket.getOutputStream();

DataOutputStream dos = new DataOutputStream(os);

dos.writeUTF("Hello!");

dos.flush();

} catch (IOException e) {

e.printStackTrace();

}

}

}

2.客户端：

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("Connect");

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) {

e.printStackTrace();

}

}

}