class Sample 
{int a;
	{
		System.out.println("Inside Non-static/Instance block");
		a=100;
	}
	Sample()
		{
			System.out.println("Inside Constructors"+  a);
			a = 2000;
			System.out.println("Hello World!"+a);
		}
	Sample(boolean x)
		{
			System.out.println("Inside Constru"+a);
			a=3000;
			System.out.println("Hello World!"+a);
		}

	public static void main(String[] args) 
	{
		System.out.println("Start");
		Sample s1 = new Sample();
		Sample s2 = new Sample(true);
		System.out.println("Stop");

	}
}