Geometry.java

//Captain-Price-TF-141

import java.util.Scanner;

/**

* This program demonstrates static methods

*/

public class Geometry 
{

   public static void main(String[] args) 
   {

       int choice; // The user's choice

       double value = 0; // The method's return value

       char letter; // The user's Y or N decision

       double radius; // The radius of the circle

       double length; // The length of the rectangle

       double width; // The width of the rectangle

       double height; // The height of the triangle

       double base; // The base of the triangle

       double side1; // The first side of the triangle

       double side2; // The second side of the triangle

       double side3; // The third side of the triangle

       // Create a scanner object to read from the keyboard

       Scanner keyboard = new Scanner(System.in);

       // The do loop allows the menu to be displayed first do

       System.out.println("");

       do 
       {

           // TASK #1 Call the printMenu method

           printMenu();

           choice = keyboard.nextInt();

           switch (choice) 
           {

           case 1:

               System.out.print("Enter the radius of the circle: ");

               radius = keyboard.nextDouble();

               // TASK #3 Call the circleArea method and store the result in the value variable

               value = circleArea(radius);

               System.out.println("The area of the circle is " + value);

               break;

           case 2:

        	   System.out.print("Enter the height of the triangle: ");

        	   height = keyboard.nextDouble();

        	   System.out.print("Enter the base of the triangle: ");

        	   base = keyboard.nextDouble();

        	   // TASK #3 Call the triangleArea method and store the result in the value variable
        	   
        	   value = triangleArea(base, height);

        	   System.out.println("The area of the triangle is " + value);

        	   break;

           case 3:

               System.out.print("Enter the radius of the circle: ");

               radius = keyboard.nextDouble();

               // TASK #3 Call the circumference method and store the result in the value variable

               value = circleCircumference(radius);

               System.out.println("The circumference of the circle is " + value);

               break;

           case 4:

               System.out.print("Enter the length of side 1 of the triangle: ");

               side1 = keyboard.nextDouble();

               System.out.print("Enter the length of side 2 of the triangle: ");

               side2 = keyboard.nextDouble();

               System.out.print("Enter the length of side 3 of the triangle: ");

               side3 = keyboard.nextDouble();

               // TASK #3 Call the perimeter method and store the result in the value variable

               value = trianglePerimeter(side1, side2, side3);

               System.out.println("The perimeter of the triangle is " + value);

               break;

           case 5:

               System.exit(0);
               
               break;

           default:

               System.out.println("You did not enter a valid choice.");

           }

       } 
       while (true);

   }

   // TASK #1 Create the printMenu method here
   
   public static void printMenu() // Menu Selection
   {

       System.out.println("This is a Geometry calculator");

       System.out.println("Choose what you would like to calculate\n");

       System.out.println(" 1. Find the area of circle");

       System.out.println(" 2. Find the area of triangle");

       System.out.println(" 3. Find the circumference of circle");

       System.out.println(" 4. Find the perimeter of triangle");

       System.out.println(" 5. Exit");

   }

   // TASK #2 Create the value-returning methods here

   // TASK #4 Write javadoc comments for each method

   /**

   * @param radius

   * @return circleArea of type double

   */

   public static double circleArea(double radius) 
   {

       return Math.PI * radius * radius;

   }

   /**

   * @param base,

   * height

   * @return triangleArea of type double

   */

   public static double triangleArea(double base, double height) 
   {

       return 0.5 * base * height;

   }

   /**

   * @param length,

   * width

   * @return rectangleArea of type double

   */

   public static double rectangleArea(double length, double width) 
   {

       return length * width;

   }

   /**

   * @param radius

   * @return circleCircumference of type double

   */

   public static double circleCircumference(double radius) 
   {

       return 2 * Math.PI * radius;

   }

   /**

   * @param length,

   * width

   * @return rectanglePerimeter of type double

   */

   public static double rectanglePerimeter(double length, double width) 
   {

       return 2 * (length + width);

   }

   /**

   * @param side1,

   * side2, side3

   * @return trianglePerimeter of type double

   */

   public static double trianglePerimeter(double side1, double side2, double side3) 
   {

       return side1 + side2 + side3;

   }


}