Wake-on-LAN in Java

WOL.java

public static void wol(String mac) throws IOException {
	int[] hex = Pattern.compile("[:-]").splitAsStream(mac).mapToInt(f -> Integer.parseInt(f, 16)).toArray();

	byte[] bytes = new byte[6 + 6 * 16];
	for (int i = 0; i < 6; i++) {
		bytes[i] = (byte) 0xFF;
	}

	for (int i = 0; i < 16; i++) {
		for (int m = 0; m < hex.length; m++) {
			bytes[6 + i * hex.length + m] = (byte) hex[m];
		}
	}

	try (DatagramSocket socket = new DatagramSocket()) {
		socket.send(new DatagramPacket(bytes, bytes.length, InetAddress.getByName("255.255.255.255"), 9));
	}
}