Assignemnt #74 and Safe Square Root

Code

/// Name: Raff Lisbona
/// Period: 6
/// Program Name: Safe Square Root
/// File Name: SafeSquareRoot.java
/// Date Finished: 12/14/2015

import java.util.Scanner;
public class SafeSquareRoots
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);
        
        int n;
        
        System.out.println("SQUARE ROOT!");
        System.out.print("Enter a number: ");
        n = keyboard.nextInt();
        if ( n < 0 )
            System.out.println("You can't take the square root of a negative number, silly.");
        
        while ( n < 0 )
        {
            System.out.print("Enter a number: ");
            n = keyboard.nextInt();
            
            if ( n < 0 )
                System.out.println("You can't take the square root of a negative number, silly head.");
        }
        System.out.println("The square root of " + n + " is " + Math.sqrt(n) + ".");
    }
}
    

Picture of the output