一、代码

package main;

import java.net.*;
import java.util.Enumeration;

/**
 * @ClassName InetAddressExample
 * @Description TODO
 * @Author Cays
 * @Date 2019/3/15 9:33
 * @Version 1.0
 **/
public class InetAddressExample {
    public static void main(String []args){
        //get the network interfaces and associated address for this host
        try {
            //获取主机的网络接口列表
            Enumeration<NetworkInterface> interfaceList=
                    NetworkInterface.getNetworkInterfaces();
            if (interfaceList==null){
                System.out.println("--No interfaces found--");
            }else {
                while (interfaceList.hasMoreElements()){
                    NetworkInterface iface=interfaceList.nextElement();
                    //打印接口名称
                    System.out.println("Interface "+iface.getName()+":");
                    //getInetAddresses返回Enumeration对象，包含InetAddress实例
                    //即该接口关联的每一个地址
                    Enumeration<InetAddress> addrList=iface.getInetAddresses();
                    if (!addrList.hasMoreElements()){
                        System.out.println("\tNo address for this interface");
                    }
                    //打印地址类型
                    while (addrList.hasMoreElements()){
                        InetAddress address=addrList.nextElement();
                        System.out.print("\tAddress "+
                                ((address instanceof Inet4Address ? "(v4)":
                                (address instanceof Inet6Address ? "(v6)": "(?)"))));
                        System.out.println(":"+address.getHostAddress());
                    }
                }
            }
        }catch (SocketException e){
            System.out.println("Error getting network interfaces:"+e.getMessage());
        }
        //get name(s)/address(es) of host given on command line
        for (String host:args){
            try {
                System.out.println(host+":");
                InetAddress []addresseList=InetAddress.getAllByName(host);
                for (InetAddress address:addresseList){
                    System.out.println("\t"+address.getHostName()+"/"+address.getHostAddress());
                }
            }catch (UnknownHostException e){
                System.out.println("\tUnable to find address for "+host);
            }
        }
    }
}

二、结果