Java: How to use Thread.join

Question

I\'m new to threads. How can I get t.join to work, whereby the thread calling it waits until t is done executing?

This code would just freeze the progr

Answer 1

You have to call the join method on the other Thread.
Something like:

@Override
public void run() {
    String[] info = new String[] {"abc", "def", "ghi", "jkl"};

    Thread other = new OtherThread();
    other.start();

    for (int i = 0; i < info.length; i++) {
        try {
            if (i == info.length / 2) {
                other.join();    // wait for other to terminate
            }
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.printf("%s %s%n", getName(), info[i]);
    }       
}