SquareR

Code

import java.util.Scanner;

public class SquareR
{
	public static void main( String[] args )
	{
		Scanner keyboard = new Scanner(System.in);

        int num;
        double num1;
        
        System.out.println(" Hello, please tell me a nubmer, and I will square it for you." );
        num = keyboard.nextInt();
        
        while ( num <= 0 )
        {
            System.out.println( " Sorry but you can't use that, TRY AGAIN " );
            num = keyboard.nextInt();
        }
        
        num1 = Math.sqrt(num);
        
        System.out.println( " The square root would be " + num1 );
    }
}

SquareR