Assignemnt #74 and sqr

Code

    ///Name: Luke Shin
    ///Period: 7
    ///Project Name: sqr
    ///File Name: sqr.java
    ///Date: 01/04/2016
    
    import java.util.Scanner;
    import java.util.InputMismatchException;
    
    
    public class sqr{
        public static void main(String[] args){
            
            Scanner keyboard = new Scanner(System.in);
            
            int n;
            
            System.out.println("YO");
            
            System.out.print("#: ");
            
            n = keyboard.nextInt();
            
            
            while (n < 0){
                System.out.println("You can't take the square root of a neg num.");
                System.out.print("#: ");
                n = keyboard.nextInt();
            }
            double sqr = Math.sqrt(n);
            System.out.println("sqr of "+n+" is: "+sqr);
        }
    }

    

Picture of the output