java socket demo

//TCPServer.java
package msb.demo.socket;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Date;

public class TCPServer {

	/**
	 * @param args
	 * @throws IOException
	 * @throws InterruptedException 
	 */
	public static void main(String[] args) throws IOException, InterruptedException {

		ServerSocket serverSocket = new ServerSocket(3333);
		while (true) {
			Socket socket = serverSocket.accept();
			Thread.sleep(2000);
			//read from client
			DataInputStream dis = new DataInputStream(socket.getInputStream());
			String data = dis.readUTF();
			String msg =(new Date() + " accept:" + data);
			System.out.println("Server received:"+msg);
			
			//write to client
			DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
			dos.writeUTF(msg);
			
			dis.close();
			dos.close();
			socket.close();
		}
	}

}


//TCPClient.java
package msb.demo.socket;

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

public class TCPClient {

	static int cnt = 0;
	/**
	 * @param args
	 * @throws IOException 
	 * @throws UnknownHostException 
	 */
	public static void main(String[] args) throws Exception {
		
		for(int i=0;i<5;i++)
			connectServer();

	}

	
	static void connectServer() throws Exception{
		Socket socket = new Socket("127.0.0.1",3333);
		DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
		//write to server
		dos.writeUTF("p"+ (++cnt));
		dos.flush();
		
		
		//read from server
		DataInputStream dis = new DataInputStream(socket.getInputStream());
		String msg = dis.readUTF();
		System.out.println("Client received:"+msg);
		
		dos.close();
		dis.close();
		socket.close();

	}
}