How to prevent for creating number of instance in Singleton class?

				
					
public class SingletonTest {
	private static SingletonTest h = null;
	static int count = 0;

	public SingletonTest() {
		count++;
	}

	public static SingletonTest getInstance() {
		if (count < 2) {
			h = new SingletonTest();
		}
		return h;
	}

	public static void main(String[] args) {
		SingletonTest s1 = SingletonTest.getInstance();
		System.out.println(s1.hashCode());
		SingletonTest s2 = SingletonTest.getInstance();
		System.out.println(s2.hashCode());
		SingletonTest s3 = SingletonTest.getInstance();
		System.out.println(s3.hashCode());
	}
}