Question

what i have:

import java.util.Scanner;

public class examples1 {

public static void main(String[] args) {

Square shade = new Square(getside());

System.out.println("Your chooses are:");

System.out.println("\nCircle");

System.out.println("Triangle");

System.out.println("Rectangle");

System.out.println("Square");

boolean moreShapes = true;

boolean userChoice = true;

while(moreShapes) {

Scanner shapes = new Scanner (System.in);

System.out.println("\nWhat shape do you want:");

String yourShape = shapes.nextLine();

if (userChoice = shade != null) {

shade.getSide();

}

System.out.println("\nWhat are two size paramters of the shape you choose:");

String yourParameter = shapes.nextLine();

System.out.println("\nYour shape is: " + yourShape + " \nYour shape parameters are:" + " " + yourParameter);

if (yourShape.equalsIgnoreCase("quit"))

moreShapes = false;

else {

if (yourParameter.equalsIgnoreCase("quit"));

}

}

//Rectangle ruby = new Rectangle(12, 15);

//Triangle trudy = new Triangle(15, 25, 0.5);

//Circle curty = new Circle(5, 3.14159);

//shady.calculateArea1();

//ruby.calculateArea2();

//trudy.calculateArea3();

//curty.calculateArea4();

}

private static int getside() {

// TODO Auto-generated method stub

return 0;

}

class Square {

int side;

//constructor

Square(int newside) {

setSide(newside);

}

// accessor

int getSide() {return side;}

void setSide(int newside) { side = newside; }

// Method to calculate Area of Square

void calculateArea1() {

int Area1;

Area1 = side * side;

System.out.println("Area of a Square is: " + Area1);

}

}

}

directions:

•Implement classes Square, Rectangle, Triangle, and Circle:

–With attributes for size parameters which determine area

–As well as an attribute for the area

–Also constructor, mutator, and accessor methods

–And toString and equals methods

•Implement a main program which repeatedly:

–Asks the user to choose a shape

–Then asks for the size parameters for 2 objects of that shape

–Instantiates the objects and sets the area for each

–Use the toString method to output the formatted data

•e.g., “Triangle 1 has base=7, height=5, and area=17.5”

–Then outputs a statement describing “equality”

•e.g., “The triangles have the same area, but different base and height”

•or, “The rectangles have the same length, but different area”

•Keep “playing” until the user indicates they want to stop

•Submit by 10/12/20

Answer 1

Source Code:

Square.java File:

class Square {
   int side;
   //constructor
   Square(int newside) {
       setSide(newside);
   }

   // accessor
   int getSide() {
       return side;
   }

   void setSide(int newside) {
       side = newside;
   }

   // Method to calculate Area of Square
   double calculateArea() {
       return side * side;
      
   }
  
   @Override
   public String toString() {
       return "Side= " + side + " and Area = " + calculateArea();
   }

   @Override
   public boolean equals(Object obj) {
       if (this == obj) {
           return true;
       }
       if (obj == null) {
           return false;
       }
       if (getClass() != obj.getClass()) {
           return false;
       }
       Square other = (Square) obj;
       return side == other.side;
   }
  
  
}

Rectangle.java File:

import java.util.Objects;

class Rectangle {
   int width,length;
   //constructor
   Rectangle(int width, int length) {
       setSide(width, length);
   }

   // accessor
   int getWidth() {
       return width;
   }
  
   int getLength() {
       return length;
   }

   void setSide(int width, int length) {
       this.width = width;
       this.length = length;
   }

   // Method to calculate Area of Rectangle
   int calculateArea() {
       return width * length;
   }
  
   @Override
   public String toString() {
       // TODO Auto-generated method stub
       return "Width= " + this.width + ", Length= " + this.length + " and Area = " + calculateArea();
   }

   @Override
   public boolean equals(Object obj) {
       if (this == obj) {
           return true;
       }
       if (obj == null) {
           return false;
       }
       if (getClass() != obj.getClass()) {
           return false;
       }
       Rectangle other = (Rectangle) obj;
       if(length == other.length && width == other.width) {
           System.out.println("Rectangles have same width, length and area");
           return true;
       }
       else if(length == other.length) {
           if(this.calculateArea() == other.calculateArea()) {
               System.out.println("Rectangles have same length and area, but different width");
               return true;
           }
       }
       else if (this.width == other.width) {
           if(this.calculateArea() == other.calculateArea()) {
               System.out.println("Rectangles have same width and area, but different length");
               return true;
           }
       }
       else if(this.calculateArea() == other.calculateArea()) {
           System.out.println("Rectangles have different width and length, but same area");
           return true;
       }
      
       System.out.print("Rectangles are different");
       return false;
      
   }
  
  
}

Triangle.java File:

import java.util.Objects;

class Triangle {
   int breadth, height;
   double half = 0.5;
   //constructor
   Triangle(int breadth, int height) {
       this.setSide(breadth, height);
   }

   // accessor
   int getBreadth() {
       return breadth;
   }
  
   int getHeight() {
       return breadth;
   }
  

   void setSide(int breadth, int height) {
       this.breadth = breadth;
       this.height = height;
   }

   // Method to calculate Area of Square
   double calculateArea() {
       return breadth * height * half;
   }
  
   @Override
   public String toString() {
       return "base= " + this.breadth + ", height= " + this.height + " , and area= " + this.calculateArea();
   }

   @Override
   public int hashCode() {
       return Objects.hash(breadth, height);
   }

   @Override
   public boolean equals(Object obj) {
       if (this == obj) {
           return true;
       }
       if (obj == null) {
           return false;
       }
       if (getClass() != obj.getClass()) {
           return false;
       }
       Triangle other = (Triangle) obj;
       if (breadth == other.breadth && height == other.height) {
           System.out.println("Triangles have same base and height");
           return true;
       }
       else if (breadth == other.breadth) {
           if(this.calculateArea() == other.calculateArea()) {
               System.out.println("Triangles have same base and area, but different height");
           }
           else {
               System.out.println("Triangles have same base, but different height and area");  
           }
           return true;
       }
       else if (height == other.height) {
           if(this.calculateArea() == other.calculateArea()) {
               System.out.println("Triangles have same height and area, but different base");
           }
           else {
               System.out.println("Triangles have same height, but different base and area");  
           }
           return true;
       }
       else if(this.calculateArea() == other.calculateArea()) {
           System.out.println("Triangles have same area, but different base and height");
           return true;
       }
       System.out.println("Triangles are NOT equal");
       return false;
   }
  
  
}

Circle.java File:

import java.util.Objects;

class Circle {
   int radius;
   double pi = 3.14159;

   // constructor
   Circle(int radius) {
       setSide(radius);
   }

   // accessor
   int getRadius() {
       return radius;
   }

   void setSide(int radius) {
       this.radius = radius;
   }

   // Method to calculate Area of Square
   double calculateArea() {
       return radius * radius * pi;
   }

   @Override
   public String toString() {
       return "Radius = " + this.radius + " and Area = " + calculateArea();
   }

   @Override
   public boolean equals(Object obj) {
       if (this == obj) {
           return true;
       }
       if (obj == null) {
           return false;
       }
       if (getClass() != obj.getClass()) {
           return false;
       }
       Circle other = (Circle) obj;
       if( radius == other.radius) {
           System.out.println("Circles have same radius and area");
           return true;
       }
       else {
           System.out.println("Circles are NOT equal");
           return false;
       }
   }

  
}

examples1.java File:

import java.util.Scanner;

public class examples1 {

   public static void main(String[] args) {

       Scanner keyboard = new Scanner(System.in);
       boolean moreShapes = true;
      
       while (moreShapes) {

           System.out.println("Your chooses are:");
           System.out.println("\nCircle");
           System.out.println("Triangle");
           System.out.println("Rectangle");
           System.out.println("Square");
           System.out.println("Quit");
          
           System.out.println("\nWhat shape do you want:");
           String yourShape = keyboard.nextLine();
           int side, width, length, radius, base, height;
           switch(yourShape.toLowerCase()) {
               case "circle":
                   System.out.print("Enter radius of Circle 1: ");
                   radius = keyboard.nextInt();
                   keyboard.nextLine();
                   Circle circle1 = new Circle(radius);
                  
                   System.out.print("Enter radius of Circle 2: ");
                   radius = keyboard.nextInt();
                   keyboard.nextLine();
                   Circle circle2 = new Circle(radius);
                  
                   //Use the toString method to output the formatted data
                   System.out.println("Circle 1: " + circle1.toString());
                   System.out.println("Circle 2: " + circle2.toString());
                   circle1.equals(circle2);
                   break;
               case "triangle":
                   System.out.print("Enter base of Triangle 1: ");
                   base = keyboard.nextInt();
                   keyboard.nextLine();
                   System.out.print("Enter height of Triangle 1: ");
                   height = keyboard.nextInt();
                   keyboard.nextLine();
                   Triangle triangle1 = new Triangle(base, height);
                  
                   System.out.print("Enter base of Triangle 2: ");
                   base = keyboard.nextInt();
                   keyboard.nextLine();
                   System.out.print("Enter height of Triangle 2: ");
                   height = keyboard.nextInt();
                   keyboard.nextLine();
                   Triangle triangle2 = new Triangle(base, height);
                  
                   //Use the toString method to output the formatted data
                   System.out.println("Triangle 1: " + triangle1.toString());
                   System.out.println("Triangle 2: " + triangle2.toString());
                   triangle1.equals(triangle2);
                  
                  
                   break;
               case "rectangle":
                   System.out.print("Enter width of Rectangle 1: ");
                   width = keyboard.nextInt();
                   keyboard.nextLine();
                   System.out.print("Enter length of Rectangle 1: ");
                   length = keyboard.nextInt();
                   keyboard.nextLine();
                   Rectangle rectangle1 = new Rectangle(width, length);
                  
                   System.out.print("Enter width of Rectangle 2: ");
                   width = keyboard.nextInt();
                   keyboard.nextLine();
                   System.out.print("Enter length of Rectangle 2: ");
                   length = keyboard.nextInt();
                   keyboard.nextLine();
                   Rectangle rectangle2 = new Rectangle(width, length);
                  
                   //Use the toString method to output the formatted data
                   System.out.println("Rectangle 1: " + rectangle1.toString());
                   System.out.println("Rectangle 2: " + rectangle2.toString());
                   rectangle1.equals(rectangle2);
                  
                   break;
               case "square":
                   System.out.print("Enter side of square 1: ");
                   side = keyboard.nextInt();
                   keyboard.nextLine();
                   Square sq1 = new Square(side);
                  
                   System.out.print("Enter side of square 2: ");
                   side = keyboard.nextInt();
                   keyboard.nextLine();
                   Square sq2 = new Square(side);
                  
                   //Use the toString method to output the formatted data
                   System.out.println("Square 1: " + sq1.toString());
                   System.out.println("Square 2: " + sq2.toString());
                  
                   if(sq1.equals(sq2)) {
                       System.out.println("Square 1 and Square 2 are equal");
                   }
                   else {
                       System.out.println("Square 1 and Square 2 are NOT equal");
                   }
                   break;
               case "quit":
                   moreShapes = false;
                   System.out.println("Good Bye, see you soon!");
                   break;
               default:
                   System.out.println("Invalid choice, retry!");
                   break;
           }      
       }
   }
}

Sample Run:

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