Geometric Shape Calculator

Overview

This Java-based Geometric Shape Calculator provides functionality to compute essential measurements such as area, perimeter, and volume for various two-dimensional and three-dimensional shapes. The design follows Object-Oriented Programming (OOP) principles, leveraging abstraction, inheritance, and interfaces.

Supported Shapes:

• 2D Shapes: Triangle, Rectangle, Square, Circle
• 3D Shapes: Cube, Sphere, Cylinder, Equilateral Pyramid
• Interactive menu-based system for ease of use

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Requirements

Ensure you have the following set up before executing the program:

• Java Development Kit (JDK) 8 or newer installed
• An IDE or code editor (such as IntelliJ IDEA, Eclipse, VS Code, or Notepad++)
• Command-line access to compile and run Java files

To verify your Java installation, use:

java -version

Code Structure

Shape.java

An abstract superclass defining common attributes and abstract methods applicable to all shapes.

VolumeInterface.java

An interface specifically for three-dimensional shapes that require volume calculations.

Shape Implementations

Each shape class extends Shape and implements VolumeInterface where needed:

• Triangle.java (inherits from Shape)
• Rectangle.java (inherits from Shape)
• Square.java (inherits from Shape)
• Circle.java (inherits from Shape)
• Cube.java (inherits from Shape, implements VolumeInterface)
• Sphere.java (inherits from Shape, implements VolumeInterface)
• Cylinder.java (inherits from Shape, implements VolumeInterface)
• EquilateralPyramid.java (inherits from Shape, implements VolumeInterface)

Main.java

Handles user interactions through a menu-driven approach, allowing calculations based on user input.

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Class Details

Shape.java

Method	Functionality
Shape()	Initializes dimensions to zero.
Shape(double dim1, double dim2, double dim3, int sides)	Constructor to initialize shape properties.
calculateArea()	Abstract method for area computation.
calculatePerimeter()	Abstract method for perimeter computation.
getNumSides()	Retrieves the number of sides of a shape.

VolumeInterface.java

Method	Functionality
calculateVolume()	Abstract method implemented by 3D shapes for volume computation.

Shape Classes

Each class extends Shape and contains relevant formulas.

Triangle.java

Method	Functionality
Triangle(double base, double height)	Initializes a triangle with given dimensions.
calculateArea()	Computes 0.5 * base * height.
calculatePerimeter()	Determines perimeter using the sum of sides.

Rectangle.java

Method	Functionality
Rectangle(double length, double width)	Initializes rectangle properties.
calculateArea()	Computes length * width.
calculatePerimeter()	Computes 2 * (length + width).

Square.java

Method	Functionality
Square(double side)	Initializes square dimensions.
calculateArea()	Computes side * side.
calculatePerimeter()	Computes 4 * side.

Circle.java

Method	Functionality
Circle(double radius)	Initializes the circle.
calculateArea()	Computes π * radius².
calculatePerimeter()	Computes 2 * π * radius.

Cube.java

Method	Functionality
Cube(double side)	Initializes a cube.
calculateArea()	Computes 6 * side².
calculatePerimeter()	Computes 12 * side.
calculateVolume()	Computes side³.

Sphere.java

Method	Functionality
Sphere(double radius)	Initializes sphere properties.
calculateArea()	Computes 4 * π * radius².
calculatePerimeter()	Computes circumference: 2 * π * radius.
calculateVolume()	Computes (4/3) * π * radius³.

Cylinder.java

Method	Functionality
Cylinder(double radius, double height)	Initializes a cylinder.
calculateArea()	Computes 2 * π * radius * (radius + height).
calculatePerimeter()	Computes 2 * (2 * radius + height).
calculateVolume()	Computes π * radius² * height.

EquilateralPyramid.java

Method	Functionality
EquilateralPyramid(double side, double height)	Initializes the pyramid.
calculateArea()	Computes surface area using the respective formula.
calculatePerimeter()	Computes 4 * side.
calculateVolume()	Computes (1/3) * base_area * height.

Main.java (Menu-Driven Interface)

Users can select a shape to perform calculations.

Choice	Action
1	Compute area & perimeter of a Triangle.
2	Compute area & perimeter of a Rectangle.
3	Compute area, perimeter & volume of a Cube.
4	Compute area & perimeter of a Square.
5	Compute area & perimeter of a Circle.
6	Compute area, perimeter & volume of a Sphere.
7	Compute area, perimeter & volume of a Cylinder.
8	Compute area, perimeter & volume of an Equilateral Pyramid.
9	Exit the program.

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Execution Instructions

1. Compile all Java files:

   javac Main.java

2. Run the program:

   java Main