Get IP Address of a Device

Ip.java

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

public class Ip {
    
    public static void main(String[] args) {
        getIPAddress();
    }
    
    String getSubnetAddress(String ip) {
        try {
            String[] split = ip.split("\\.");
            return split[0] + "." + split[1] + "." + split[2] + ".";
        } catch (ArrayIndexOutOfBoundsException e) {
            return "NOT IP";
        }
    }

    String getIPAddress() {
        try {
            List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
            for (NetworkInterface intf : interfaces) {
                List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
                for (InetAddress addr : addrs) {
                    if (!addr.isLoopbackAddress()) {
                        String sAddr = addr.getHostAddress();
                        // boolean isIPv4 = InetAddressUtils.isIPv4Address(sAddr);
                        boolean isIPv4 = sAddr.indexOf(':') < 0;
                        if (isIPv4)
                            return sAddr;
                    }
                }
            }
        } catch (Exception ex) {
        }
        return "";
    }
}