Question

2. Second (after you have submitted your answers to the Canvas questions of Part 1), use Eclipse to implement the Java class described by the UML diagram shown below. 3. You have a maximum of 10 submissions of your Java source code to Web-CAT. 4. You do not need to adhere to checkstyle rules when completing this exercise. 5. You do not need to write your own Unit test methods when completing this exercise, though you are welcome to do so. 6. Do not add a package statement to your Java source code file. In other words, the class you define should be in the default package. Shape 3D {abstract) +surfaceArea() : double {abstract} Sphere -radius: double +Sphere (radiusIn:double) +getRadius()double +surfaceArea() : double • The arrow pointing upward (1) indicates that the class below the arrow is a direct subclass of the class above the arrow. • The surface area of a sphere is 4wr2. • There is a constant named Pl in the Math class.

Answer 1

Please find the answer below.
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Sphere.java

package staticclasses;

abstract class Shape3D{
   abstract double surfaceArea();
}
public class Sphere extends Shape3D {
   private double radius;
  
   public Sphere(double radius) {
       super();
       this.radius = radius;
   }

   public double getRadius() {
       return radius;
   }

   @Override
   double surfaceArea() {
       return 4*Math.PI*radius*radius;
   }
  
  
   public static void main(String[] args) {
       Sphere sphere = new Sphere(10);
       System.out.println(sphere.surfaceArea());
   }
}

output