while-loop and if-statment

import java.util.Scanner; //import scanner to be able to read data from user.

public class program1
{

	public static void main(String[] args)
	{
		Scanner obj1 = new Scanner(System.in);
		System.out.print("Type 45: ");
		int x = obj1.nextInt(); //Waiting for input. And it scans it as an int.
		if(x == 45)
		{
			int y = 0;
			while(y < 101)
			{
				System.out.println(y);
				++y;
			}
		}
		else
		{
			System.out.println("Error");
		}
	}

}