beginner hw question | Together Java | Page 1

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<@&987246399047479336> please have a look, thanks.

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pe and the area of the shape, while Combo has a list of shapes and a method to calculate the total area of all shapes in the combo.

Here's an example implementation:

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// Shape interface
public interface Shape {
    String getName();
    double getArea();
}

// Circle class implementing Shape interface
public class Circle implements Shape {
    private String name;
    private double radius;

    public Circle(String name, double radius) {
        this.name = name;
        this.radius = radius;
    }

    @Override
    public String getName() {
        return name;
    }

    @Override
    public double getArea() {
        return Math.PI * radius * radius;
    }
}

// Rectangle class implementing Shape interface
public class Rectangle implements Shape {
    private String name;
    private double width;
    private double height;

    public Rectangle(String name, double width, double height) {
        this.name = name;
        this.width = width;
        this.height = height;
    }

    @Override
    public String getName() {
        return name;
    }

    @Override
    public double getArea() {
        return width * height;
    }
}

// Combo class implementing Shape interface
public class Combo implements Shape {
   private List<Shape> shapes;

   public Combo(List<Shape> shapes) {
       this.shapes = shapes;
   }

   @Override
   public String getName() {
       return "Combo";
   }

   @Override
   public double getArea() {
       double totalArea = 0.0;

       for (Shape shape : shapes) {
           totalArea += shape.getArea();
       }

       return totalArea;
   }
}

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You can create instances of Circle, Rectangle, or Combo classes and call their respective methods to get the name and area of each shape. For example:

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Circle circle = new Circle("Circle", 5.0);
System.out.println(circle.getName()); // Output: Circle
System.out.println(circle.getArea()); // Output: 78.53981633974483

Rectangle rectangle = new Rectangle("Rectangle", 4.0, 6.0);
System.out.println(rectangle.getName()); // Output: Rectangle
System.out.println(rectangle.getArea()); // Output: 24.0

List<Shape> shapes = new ArrayList<>();
shapes.add(circle);
shapes.add(rectangle);

Combo combo = new Combo(shapes);
System.out.println(combo.getName()); // Output: Combo
System.out.println(combo.getArea()); // Output: 102.53981633974483

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Hope this helps you with your homework! Let me know if you have any further questions.

#beginner hw question