Question

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This programming lab assignment requires that you create a class and use an equals method to compare two or more objects. Your should use your QC5 as a reference.

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Instructions

LAB5 Instructions

Using QC5 as a model, create a Rectangle class and a CompareUsingequalsMethod class that uses an   equals Method to determine if two rectangles are equal if and only if their areas are equal. The Rectangle class should have two instance variables length and width.

Your submission to BB should be your “Rectangle.java” and “CompareUsingequalsMethod.java” files only, not included in a .zip file or a .gpj file.

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QC5

Circle.java

/**circle class*/
public class Circle{
//fields
private int radius;
//constructor
public Circle(int radius){
this.radius = radius;
  
}
//methods
public int getRadius() {
return radius;
}
public boolean equals(Circle inC1, Circle inC2){
if(inC1.getRadius() == inC2.getRadius())
return true;
else
return false;
  
}
}

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CompareUsingequalsMethod.java

/**Demos using the equals method*/
public class CompareUsingequalsMethod{
public static void main(String[] args){
Circle circle1 = new Circle(3);
Circle circle2 = new Circle(3);
Circle circle3 = new Circle(5);
if (circle1.equals(circle1,circle2)) {
System.out.println(" Circle1 with radius " + circle1.getRadius() +
" is equal to circle2 with radius " + circle2.getRadius());

}
else{
System.out.println(" circle1 with radius " + circle1.getRadius() + " Radius is not equal to circle2 with radius " + circle2.getRadius());
  
}
if(circle3.equals(circle3,circle2)) {
System.out.println(" Circle3 with radius" + circle3.getRadius() +
" is equal to circle2 with radius" + circle2.getRadius());
}
else{
System.out.println(" circle3 with radius " + circle3.getRadius() + " Radius is not equal to circle2 with radius " + circle2.getRadius());
  

}
}
}

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
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// Rectangle.java

public class Rectangle {
   //Declaring instance variables
   private double length;
   private double width;

   //Parameterized constructor
   public Rectangle(double length, double width) {
       this.length = length;
       this.width = width;
   }

   // getters and setters
   public double getLength() {
       return length;
   }

   public void setLength(double length) {
       this.length = length;
   }

   public double getWidth() {
       return width;
   }

   public void setWidth(double width) {
       this.width = width;
   }

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

   //This method will compare two Rectangle Objects
   public boolean equals(Rectangle r1, Rectangle r2) {
       if (r1.area() == r2.area())
           return true;
       else
           return false;

   }

   //toString method is used to display the contents of an object inside it
   public String toString() {
       return "Rectangle : Length=" + length + ", Width=" + width;
   }
  

}
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// CompareUsingequalsMethod.java

public class CompareUsingequalsMethod {

   public static void main(String[] args) {
       //Creating an Instance of Rectangle class obejcts
       Rectangle r1 = new Rectangle(3, 4);
       Rectangle r2 = new Rectangle(2, 6);
      
       //Comparing two Rectangle class Objects
       if (r1.equals(r1, r2)) {
           System.out.println("Rectangle#1 with area " + r1.area()
                   + " is equal to Rectangle#2 with area " + r2.area());
       } else {
           System.out.println("Rectangle#1 with area " + r1.area()
                   + " is not equal to Rectangle#2 with area " + r2.area());
       }
   }

}
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Output:

Rectangle#1 with area 12.0 is equal to Rectangle#2 with area 12.0

_______________Could you plz rate me well.Thank You