Sleep and check until condition is true

Question

Is there a library in Java that does the following? A thread should repeatedly sleep for x milliseconds until a condition becomes true or the max t

Answer 1

I was looking for a solution like what Awaitility provides. I think I chose an incorrect example in my question. What I meant was in a situation where you are expecting an asynchronous event to happen which is created by a third party service and the client cannot modify the service to offer notifications. A more reasonable example would be the one below.

class ThirdPartyService {

    ThirdPartyService() {
        new Thread() {

            public void run() {
                ServerSocket serverSocket = new ServerSocket(300);
                Socket socket = serverSocket.accept();
                // ... handle socket ...
            }
        }.start();
    }
}

class ThirdPartyTest {

    @Before
    public void startThirdPartyService() {
        new ThirdPartyService();
    }

    @Test
    public void assertThirdPartyServiceBecomesAvailableForService() {
        Client client = new Client();
        Awaitility.await().atMost(50, SECONDS).untilCall(to(client).canConnectTo(300), equalTo(true));
    }
}

class Client {

    public boolean canConnect(int port) {
        try {
            Socket socket = new Socket(port);
            return true;
        } catch (Exception e) {
            return false;
        }
    }
}