This programs signifies that the child threads dies if parent thread dies.

Parent-Kill-Child.java

class MyThread {
	public static void main(String[] args) {
		for (int count = 0; count < 10; count++) {
			Thread thread = new Thread(()->{
				System.out.println("Thread "+Thread.currentThread().getName()+" is going to start");
				try{
					Thread.sleep(500);
				} catch(InterruptedException exception){
					exception.getMessage();
				}
				System.out.println(Thread.currentThread().getName()+" Child Thread is executed");
			});
			thread.start();
		}		
		System.out.println("Main Thread");
		System.exit(0);
	}
}