addr.java

java课件及例程有一些PPT及一些例程

import java.net.*;
import java.io.*;
class Addr{
    public static void main(String[] args){
        String a = "210.31.43.106";
        try{
            	InetAddress myAddr = new InetAddress();
            	myAddr = InetAddress.getByName(a);
	        System.out.println(myAddr.getCanonicalHostName());
	        System.out.println("主机地址为："+myAddr.getHostAddress());
	        System.out.println("主机名为："+myAddr.getHostName());
	        System.out.println("是否loopback地址？"+myAddr.isLoopbackAddress());
        }catch(UnknownHostException e){System.out.println("Error"+e.getMessage());}
           
    }
}