1 import java.net.InetAddress;
 2 import java.net.UnknownHostException;
 3 import java.util.Arrays;
 4 
 5 public class Test1{
 6     public static void main(String[] args) throws UnknownHostException{
 7         // 获取本机的InetAdresss实例
 8         InetAddress address = InetAddress.getLocalHost();
 9         System.out.println("计算机名："+address.getHostName()+"\nIP地址："+address.getHostAddress());
10 
11         // 获取字节数组形式的IP地址
12         byte[] bytes = address.getAddress();
13         System.out.println("字节数组形式的IP："+Arrays.toString(bytes));
14         System.out.println(address);
15 
16         // 也可以通过机器名来获取InewAdress
17         InetAddress address2 = InetAddress.getByName("MacBook-Air-2.local");
18         System.out.println("通过计算机名字创建的InetAddress对象："+address2);
19         System.out.println("计算机名："+address2.getHostName());
20         System.out.println("IP地址："+address2.getHostAddress());
21 
22         // 也可以通过IP地址来获取InewAdress
23         InetAddress address3 = InetAddress.getByName("192.168.1.102");
24         System.out.println("通过计算机IP地址创建的InetAddress对象："+address3);
25         System.out.println("计算机名："+address3.getHostName());
26         System.out.println("IP地址："+address3.getHostAddress());
27 
28 
29     }
30 }