자바 IP, MAC 주소 가져오기

import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;

public static String getAddress1()
{
    String rtnVal= "";
    InetAddress ip;
    try {

        ip = InetAddress.getLocalHost();
        System.out.println("Current IP address : " + ip.getHostAddress());

        rtnVal = ip.getHostAddress();

    } catch (Exception e) {

        e.printStackTrace();

    }
    return rtnVal;
}
public static String getMacAddress1()
{
    String rtnVal= "";
    InetAddress ip;
    try {

        ip = InetAddress.getLocalHost();
        //System.out.println("Current IP address : " + ip.getHostAddress());

        NetworkInterface network = NetworkInterface.getByInetAddress(ip);

        byte[] mac = network.getHardwareAddress();

        System.out.print("Current MAC address : ");

        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < mac.length; i++) {
            sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
        }
        System.out.println(sb.toString());
        rtnVal = sb.toString();

    } catch (Exception e) {

        e.printStackTrace();

    }
    return rtnVal;
}

 

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