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 time is reached.

This situation mostly occurs when a test waits for some condition to become true. The condition is influenced by another thread.

[EDIT]Just to make it clearer, I want the test to wait for only X ms before it fails. It cannot wait forever for a condition to become true. I am adding a contrived example.

class StateHolder{
    boolean active = false;
    StateHolder(){
        new Thread(new Runnable(){
            public void run(){
                active = true;
            }
        }, "State-Changer").start()
    }
    boolean isActive(){
        return active;
    }
}


class StateHolderTest{
    @Test
    public void shouldTurnActive(){
        StateHolder holder = new StateHolder();
        assertTrue(holder.isActive); // i want this call not to fail 
    }
}
Edit
Report