checking if variable is blank after 20 seconds

[Pouncer]

public class Test {
    public static void main(String[] args) {
	long startTime = System.nanoTime();
	
	String blah = "";

	while(true) {
	    System.out.println("testing");
	    if (System.nanoTime() - startTime > 20000)
		break;
	}
    }   
}

i want to somehow check if blah.equals("") after 20 seconds, can anyone help me?

[ComputerJy]

	public static void main(String[] args)
	{
		String blah = "";
		Thread th = new Thread(new Runnable()
		{
			@Override
			public void run()
			{
				try
				{
					Thread.sleep(20000);
				}
				catch (InterruptedException e)
				{
				}
			}
		});
		th.start();

	}

[ComputerJy]

Of course it won't make any sense to do that for a local variable

[Pouncer]

Thanks ComputerJy, but where would i check to see if blah still is "" after 20 seconds? after the Thread.sleep line?

[ComputerJy]

exactly