abstract class Shape3D {

              public abstract double calculateVolume();
              
              public abstract double calculateSurfaceArea();
              }
              
              class Sphere extends Shape3D {
              private double radius; public Sphere(double radius) {
              this.radius = radius;
              }
              
              
              public double calculateVolume() {
              return (4.0 / 3.0) * Math.PI * Math.pow(radius, 3)
              ; }
              
              
              public double calculateSurfaceArea() {
              return 4 * Math.PI * Math.pow(radius, 2);
              }
              }
              
              class Cube extends Shape3D {
              private double sideLength;
              
              public Cube(double sideLength) {
              this.sideLength = sideLength;
              }
              
              public double calculateVolume() {
              return Math.pow(sideLength, 3);
              }
              
              public double calculateSurfaceArea() {
              return 6 * Math.pow(sideLength, 2);
              }
              }
              
              class Shape3DExample {
              public static void main(String[] args) {
              Sphere sphere = new Sphere(5.0);
              Cube cube = new Cube(4.0);
              
              System.out.println("Sphere Volume: " + sphere.calculateVolume());
              System.out.println("Sphere Surface Area: " + sphere.calculateSurfaceArea());
              
              System.out.println("Cube Volume: " + cube.calculateVolume());
              System.out.println("Cube Surface Area: " + cube.calculateSurfaceArea());
              }
              }