udpserverdemo.java

Java面向对象编程(随书配套源代码) 阐述了面向对象编程的思想

package chapter16;
import java.io.*;
import java.lang.*;
import java.net.*;
public class UDPServerDemo
{ 
	private DatagramSocket skServer; 
	private DatagramPacket dpServer; 
	private byte rb[]; 
	private String strReceived; 
	public UDPServerDemo() 
	{ 
		Init(); 
	} 
	public void Init() 
	{ 
		try 
		{ 
			skServer=new DatagramSocket(10005); 
			System.out.println("服务器已启动并已处于监听状态!");
			rb=new byte[1024]; 
			dpServer=new DatagramPacket(rb,rb.length); 
			strReceived=""; 
			int i=0; 
			while(i==0)//无数据，则循环 
			{ 
				skServer.receive(dpServer); 
				i=dpServer.getLength(); //接收数据 
				if(i>0) 
				{ 
					//指定接收到数据的长度,可使接收数据正常显示,开始时很容易忽略这一