How to know when a Thread has been completed

Question

I have the following implementation javascript on the call of a Thread.

I would like to print in the log the moment Thread was finished. That’s possible?

func4 = {
        run: function(){
            atv4();
        }
    };
    r4 = new java.lang.Runnable(func4);
    t4 = new java.lang.Thread(r4);
    t4.start();
    log.info("Iniciei a thread atv4");
    return;

Answer 1

Every time you finish running the thread or even when an error occurs it goes to the state TERMINATED .

if(t4.getState()!=Thread.State.TERMINATED){...}