Question

Not sure sure if I am doing this right. I need to make a new thread to write out message certain number of times. I think this works so far but not sure if its the best way of doing it. Then i need to display another message after thread has finished running. How do I do that ? Using isAlive() ? How do i implement that ?

public class MyThread extends Thread {

    public void run() {
        int i = 0;
        while (i < 10) {
            System.out.println("hi");
            i++;
        }
    }

    public static void main(String[] args) {
        String n = Thread.currentThread().getName();
        System.out.println(n);
        Thread t = new MyThread();
        t.start();
    }
}

Answer 1

Till now you are on track. Now, to display another message, when this thread has finished, you can invoke Thread#join on this thread from your main thread. You would also need to handle InterruptedException, when you use t.join method.

Then your main thread will continue, when your thread t has finished. So, continue your main thread like this: –

t.start();
try {
    t.join();
} catch (InterruptedException e) {
    e.printStackTrace();
}
System.out.println("Your Message"); 

When your call t.join in a particular thread (here, main thread), then that thread will continue its further execution, only when the thread t has completed its execution.