Shapes - Class diagram

import java.util.Scanner;

// Base class GeometricShape
class GeometricShape {
    // Properties common to all shapes
    private String color;

    // Constructor to initialize properties
    public GeometricShape(String color) {
        this.color = color;
    }

    // Method to get the color
    public String getColor() {
        return color;
    }

    // Abstract method to calculate the area (to be implemented by subclasses)
    public double calculateArea() {
        return 0;
    }

    // Abstract method to calculate the perimeter (to be implemented by subclasses)
    public double calculatePerimeter() {
        return 0;
    }
}

// Class to represent a circle
class Circle extends GeometricShape {
    private double radius;

    // Constructor to initialize properties
    public Circle(String color, double radius) {
        super(color);
        this.radius = radius;
    }

    // Implementation of the method to calculate the area
    @Override
    public double calculateArea() {
        return Math.PI * radius * radius;
    }

    // Implementation of the method to calculate the perimeter
    @Override
    public double calculatePerimeter() {
        return 2 * Math.PI * radius;
    }
}

// Class to represent a square
class Square extends GeometricShape {
    private double side;

    // Constructor to initialize properties
    public Square(String color, double side) {
        super(color);
        this.side = side;
    }

    // Implementation of the method to calculate the area
    @Override
    public double calculateArea() {
        return side * side;
    }

    // Implementation of the method to calculate the perimeter
    @Override
    public double calculatePerimeter() {
        return 4 * side;
    }
}

// Class to represent a triangle
class Triangle extends GeometricShape {
    private double base;
    private double height;

    // Constructor to initialize properties
    public Triangle(String color, double base, double height) {
        super(color);
        this.base = base;
        this.height = height;
    }

    // Implementation of the method to calculate the area
    @Override
    public double calculateArea() {
        return 0.5 * base * height;
    }

    // Implementation of the method to calculate the perimeter (approximate)
    @Override
    public double calculatePerimeter() {
        return 3 * base; // Approximation for an equilateral triangle
    }
}

// Main class
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        // Create objects of different shapes
        Circle circle = new Circle("Red", 5);
        Square square = new Square("Blue", 4);
        Triangle triangle = new Triangle("Green", 6, 8);

        // Display information of the shapes
        System.out.println("Circle Information:");
        displayShapeInformation(circle);

        System.out.println("\nSquare Information:");
        displayShapeInformation(square);

        System.out.println("\nTriangle Information:");
        displayShapeInformation(triangle);

        scanner.close();
    }

    // Method to display common information of the shapes
    private static void displayShapeInformation(GeometricShape shape) {
        System.out.println("Color: " + shape.getColor());
        System.out.println("Area: " + shape.calculateArea());
        System.out.println("Perimeter: " + shape.calculatePerimeter());
    }
}