JAVA NetworkInterface类静态方法

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

public class networkInterfaceStaticMethod {

    public static void main(String[] args) {

        networkInterfaceStaticMethod.interface_getByIndex(0);

        networkInterfaceStaticMethod.interface_getByInetAddress("10.11.3.160");

        networkInterfaceStaticMethod.interface_getNetworkInterfaces();
    }

    public static void interface_getByIndex(int index) {

        NetworkInterface ni = null;
        try {
            ni = NetworkInterface.getByIndex(index);
        } catch (SocketException e) {
            e.printStackTrace();
        }

        System.out.println((ni == null) ? "interface not exist!" : ni.getName() + " : " + ni.getDisplayName() + " : " + ni.getIndex());
    }

    public static void interface_getByInetAddress(String host) {

        InetAddress local;
        NetworkInterface ni = null;
        try {
            local = InetAddress.getByName(host);
            ni = NetworkInterface.getByInetAddress(local);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (SocketException e) {
            e.printStackTrace();
        }

        Enumeration<InetAddress> addresses = ni.getInetAddresses();
        while(addresses.hasMoreElements()) {
            System.out.println(addresses.nextElement().getHostAddress());
        }
    }

    public static void interface_getNetworkInterfaces() {

        Enumeration<NetworkInterface> nis = null;
        try {
            nis = NetworkInterface.getNetworkInterfaces();
        } catch (SocketException e) {
            e.printStackTrace();
        }
        while(nis.hasMoreElements()) {
            System.out.println(nis.nextElement());
        }
    }
}