Question

I came across this blog site where the author is testing against the maximum number of threads before the machine throws a java.lang.OutOfMemoryError. However, in my below test codes, i am unable to hit the error despite the arbitrary large threads spawned.

    for (int i = 0; i < 1000000; i++) {
        Thread thread = new Thread(new Car());
        thread.setName(Integer.toString(i));
        thread.start();
    }

Answer 1

Try sleeping inside the thread, otherwise it might end up too quickly and get garbage collected, as shown in the example code:

Thread t = new Thread(new Runnable() {
    @Override
    public void run() {
        try {
            while (!Thread.interrupted()) {
                Thread.sleep(1000);
            }
        } catch (InterruptedException ignored) {
            //
        }
    }
});