Java中InetAddress类基础

InetAddress类内部隐藏了地址数字。
工厂方法：
InetAddress类明显的构造方法。为生成一个InetAddress对象，必须运用一个可用的工厂方法
工厂方法(facroty method)仅是一个类中静态方法返回一个该类实例的约定。对于InetAddress，三个方法getLocalHost(), getByName()以及getAllByName()可以用来创建InetAddress的实例。

 

package com.ifeng.net;

import java.net.InetAddress;
import java.net.UnknownHostException;

public class IPDemo
{
	public static void main(String[] args)
	{
		
		try
		{
			InetAddress net = InetAddress.getLocalHost();
			System.out.println(net.toString());
			System.out.println("Address: "+net.getHostAddress());
			System.out.println("Name: "+net.getHostName());
		}
		catch (UnknownHostException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
			InetAddress inet = null;
			try 
			{
				inet = InetAddress.getByName("www.baidu.com");
				System.out.println("Address:"+inet.getHostAddress());
			}
			catch (UnknownHostException e)
			{
				// TODO Auto-generated catch block
				e.printStackTrace();
			}		
	}
}