Method available

src/main/java/field/utility/Ports.java:16–25

(int port)

		throw new RuntimeException();
	}

	static public boolean available(int port) {
		Socket s = null;
		try {
			s = new Socket("localhost", port);
			return false;
		} catch (IOException e) {
			return true;
		} finally {
			if (s != null) {
				try {
					s.close();
				} catch (IOException e) {