Please help with Java test questions, I will post the rest of the question in separate post.

Question 1

Consider the following program: public class CountDownApp3 { public static void main(String[] args) { Thread t1 = new CountDown(); Thread t2 = new CountDown(); t1.start(); t2.start(); } } Assuming that the CountDown class extends the Thread class, how many threads are used to run this program?

	a.	3
	b.	2
	c.	4
	d.	1

Question 2

From which of the following states can a thread not be moved into the Runnable state?

	a.	Blocked
	b.	New
	c.	Waiting
	d.	Terminated

Question 3

How long will a thread that executes the following statement sleep? Thread.sleep(50);

	a.	none of the above
	b.	at most 50 milliseconds
	c.	at least 50 milliseconds
	d.	exactly 50 milliseconds

Question 4

To acquire a lock on an object, you can call

	a.	the notify method
	b.	a synchronized method
	c.	the lock method
	d.	the wait method

Question 5

What Java component controls the execution of threads?

	a.	thread scheduler
	b.	task controller
	c.	run scheduler
	d.	execution scheduler