Assignemnt 75 and Right Triangle Checker

Code

    /// Name: Xinting Chen
    /// Period: 7
    /// Program Name: Right Triangle Checker
    /// File Name: RightTriangleChecker.java
    /// Date Finished: 1/26/2016
  
import java.util.Scanner;
public class RightTriangleChecker
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);
        
        int side1, side2, side3;
        double sum, csquare;
        
        System.out.println("Enter three integers");
        System.out.print("Side 1: ");
        side1 = keyboard.nextInt();
        System.out.print("Side 2: ");
        side2 = keyboard.nextInt();
         
        while ( side2 < side1)
        {
             System.out.println( + side2 + " is smaller than " + side1 + " . Try again.");
             System.out.print("Side 2: ");
             side2 = keyboard.nextInt();
        }
        
        System.out.println("side 3: ");
        side3 = keyboard.nextInt();
        
        while ( side3 < side2)
        {
             System.out.println( + side3 + " is smaller than " + side2 + " . Try again.");
             System.out.print("Side 3: ");
             side3 = keyboard.nextInt();
        }
        
        System.out.println("Your three sides are " + side1 + " " + side2 + " " + side3 + " " );
        
        sum =  (side1^ 2) + (side2^ 2);
        csquare = (side3^ 2);
        
        if (sum == csquare)
        {
            System.out.println( " These sides do make a right triangle.");
        }
        else 
        {
            System.out.println( " Sorry, those sides don't work.");
        }
    }
}

        
        


    

Picture of the output