Create Custom CountDownLatch In Java

/**
 * Custom CoundDownLach implementation
 * @author sandeep
 *
 */
public class CustomCountDownLatch
{
	int counter;

	public CustomCountDownLatch(int counter)
	{
		this.counter = counter;
	}

	public synchronized void await() throws InterruptedException
	{
		if (counter > 0)
		{
			wait();
		}
	}

	/**
	 * method will decrement the counter by 1 each time
	 */
	public synchronized void countDown()
	{
		counter--;
		if (counter == 0)
		{
			notifyAll();
		}
	}
}