buz-java(十)

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;

public class test_udp_send {
	public static void main(String arg[]) throws Exception{
		DatagramSocket dSocket=new DatagramSocket(3000);
		String string ="Hello,word";
		DatagramPacket datagramPacket=new DatagramPacket(string.getBytes(), string.length(),InetAddress.getByName("127.0.0.1"),8001);
	    dSocket.send(datagramPacket);
	    dSocket.close();
	}

}

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;

public class test_udp_server {
	public static void main(String args[]) throws Exception{
		byte buf[]=new byte[1024];
		DatagramSocket dSocket= new DatagramSocket(8001);
		DatagramPacket datagramPacket=new DatagramPacket(buf, 1024);
		dSocket.receive(datagramPacket);
		String str=new String(datagramPacket.getData());
	    System.out.println(str);
		dSocket.close();
		
	}

}

import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.Socket;



public class test_tcp_send {
public static void main(String arg[]) throws Exception{
	new client().connect();
	
}
}
class client{
	
	public void connect() throws Exception, IOException{
		Socket client=new Socket(InetAddress.getLocalHost(),8009);
		InputStream inputStream=client.getInputStream();
		byte buf[]=new byte[1024];
		int length=inputStream.read(buf);
		System.out.println(new String(buf));
		client.close();
	}
}

public class test_tcp_server {
	public static void main(String args[]) throws Exception
	{
		new server().connect();
	}

}

class server{
	
	public void connect() throws Exception{
		
		ServerSocket serverSocket=new ServerSocket(8009);
		Socket client=serverSocket.accept();
		OutputStream outputStream=client.getOutputStream();
		outputStream.write("hello,word".getBytes());
		outputStream.close();
		client.close();
	}
}