Question

Write a test program that prompts the user to enter three sides of the triangle (make sure they define an actual triangle), a color, and a Boolean value to indicate whether the triangle is filled.

Answer 1

Answer:

   Scanner in = new Scanner(System.in);

       System.out.print("Please enter 3 sides of a triangle, color and " +

                       "whether it is filled or not (true false): ");

       double s1 = in.nextDouble();

       double s2 = in.nextDouble();

       double s3 = in.nextDouble();

       String color = in.next();

       boolean filled = in.nextBoolean();

       

       Triangle t1 = null;

       

       try {

           t1 = new Triangle(s1, s2, s3, color, filled);

       }

       catch (IllegalTriangleException ite) {

           System.out.println(ite.toString());

       }

       

       System.out.println(t1.toString());

       System.out.printf("Triangle color: %s, Triangle filled: %s%n" +  

                       "Area: %.2f%n" +  

                       "Perimeter: %.2f%n%n",

                   t1.getColor(),  

                   t1.isFilled(),

                   t1.getArea(),

                   t1.getPerimeter());

           

Explanation:

   Scanner in = new Scanner(System.in);

       System.out.print("Please enter 3 sides of a triangle, color and " +

                       "whether it is filled or not (true false): ");

       double s1 = in.nextDouble();

       double s2 = in.nextDouble();

       double s3 = in.nextDouble();

       String color = in.next();

       boolean filled = in.nextBoolean();

       

       Triangle t1 = null;

       

       try {

           t1 = new Triangle(s1, s2, s3, color, filled);

       }

       catch (IllegalTriangleException ite) {

           System.out.println(ite.toString());

       }

       

       System.out.println(t1.toString());

       System.out.printf("Triangle color: %s, Triangle filled: %s%n" +  

                       "Area: %.2f%n" +  

                       "Perimeter: %.2f%n%n",

                   t1.getColor(),  

                   t1.isFilled(),

                   t1.getArea(),

                   t1.getPerimeter());