package dlcspm4.virtualPlgr;


public class Test1
{

	public Test1()
	{
		Test2 mytest = new Test2();
		mytest.begin();
		
		try
		{
			System.out.println("Sleeping");
			Thread.sleep(3000);
			System.out.println("/Sleeping");
			mytest.begin();
		}
		catch(Exception e)
		{
			;
		}
	}


	public static void main(String[] args)
	{
		Test1 test = new Test1();
	}
}










package dlcspm4.virtualPlgr;

public class Test2 extends Thread
{
	private boolean stopper = false;


	public void run()
	{
		System.out.println("run() entered");
		int i = 0;

		while(stopper)
		{
			System.out.print(i + " ");
			++i;
			if(i > 9)
			{
				this.stopper = false;
				System.out.println();
			}
		}
			
		System.out.println("run() is about to exit");
	}


		public void begin()
		{
			this.stopper = true;

			// This begin() was called previous, isAlive()
			// is never again false even after run() exits.
			if(!this.isAlive())
			{
				this.start();
			}
			else
			{
				System.out.println("Can't execute again, thread still alive!");
			}
		}


		public void end()
		{
			this.stopper = false;
		}

}