Java网络编程-获取正在使用中的网卡及其地址

import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

public class Interface {
    public static void main(String[] args) {
        try {
            Enumeration<NetworkInterface>  interfaces = NetworkInterface.getNetworkInterfaces();
            
            while (interfaces.hasMoreElements()) {
                NetworkInterface ni = interfaces.nextElement();
                String name = ni.getName();
                NetworkInterface ip = NetworkInterface.getByName(name);
                Enumeration address = ip.getInetAddresses();
                while (address.hasMoreElements()) {
                    System.out.print(ni.getName() + ":");
                    System.out.print(ni.getDisplayName() + ":");
                    System.out.println(address.nextElement());                
                }
            }
            
        } catch (SocketException ex) {
            System.err.println("Could not list sockets。");
        } 
    }
}