Answer to Question #298983 in Java | JSP | JSF for Bruhh

Question

2. More Shapes

by CodeChum Admin

Since we are interested with drawing in this quiz (it seems), consider a Shape object. We know that for regular shapes (like Rectangle and Circle), they have properties like area and perimeter. Let's also assume that these Shapes have color (simply a String for the purpose of this quiz) and whether the shapes are filled with this color or not (boolean).

More info here, Important!

https://pastebin.com/hFgYeMFH

Answer 1

public abstract class Shape {
    private String color;
    private boolean filled;

    public Shape(String color, boolean filled) {
        this.color = color;
        this.filled = filled;
    }

    public abstract double area();

    public abstract double perimeter();

    public String getColor() {
        return color;
    }

    public boolean isFilled() {
        return filled;
    }
}

public class Rectangle extends Shape {
    private int length;
    private int width;

    public Rectangle(int length, int width, String color, boolean filled) {
        super(color, filled);
        this.width = width;
        this.length = length;
    }


    @Override
    public double area() {
        return width * length;
    }

    @Override
    public double perimeter() {
        return 2 * (width + length);
    }

    @Override
    public String toString() {
        return "Rectangle: length: " + length + ", width: " + width;
    }
}

public class Circle extends Shape {
    private int radius;

    public Circle(int radius, String color, boolean filled) {
        super(color, filled);
        this.radius = radius;
    }

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

    @Override
    public double perimeter() {
        return 2 * Math.PI * radius;
    }

    @Override
    public String toString() {
        return "Circle: radius: " + radius;
    }
}

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        switch (in.nextInt()) {
            case 1:
                Rectangle rectangle = new Rectangle(in.nextInt(), in.nextInt(), in.next(), in.nextBoolean());
                System.out.println(rectangle);
                System.out.printf("Area: %.2f\n", rectangle.area());
                System.out.printf("Perimeter: %.2f\n", rectangle.perimeter());
                if (rectangle.isFilled()) {
                    System.out.println("Color: " + rectangle.getColor());
                }
                break;
            case 2:
                Circle circle = new Circle(in.nextInt(), in.next(), in.nextBoolean());
                System.out.println(circle);
                System.out.printf("Area: %.2f\n", circle.area());
                System.out.printf("Perimeter: %.2f\n", circle.perimeter());
                if (circle.isFilled()) {
                    System.out.println("Color: " + circle.getColor());
                }
                break;
        }
    }
}