Given this code: public class Rectangle implements Comparable{ public final int

Question

Given this code:

public class Rectangle implements Comparable{
  
   public final int NUM_OF_SIDES = 4;
   private double length;
   private double width;
  
   public Rectangle(){
       length = 2;
       width = 2;
   }
  
   public Rectangle(double l, double w){
       length = l;
       width = w;
   }
  
   public void setLength(double l){
       length=l;
   }
  
   public void setWidth(double w){
       width = w;
   }
  
   public double getLength(){
       return length;
   }
  
   public double getWidth(){
       return width;
   }
  
   public double getPerimeter(){
       return 2*length + 2*width;
   }
  
   public double getArea(){
       return length * width;
   }
  
   public boolean equals(Object obj){
       if(obj instanceof Rectangle){
           Rectangle that = (Rectangle) obj;
           if(this.length == that.length && this.width == that.width){
               return true;
           }
       }
       return false;
   }
           public int compareTo(Object obj){
               if(obj instanceof Rectangle){
                   Rectangle that = (Rectangle) obj;
                  
           double diff = this.getArea() - that.getArea();
          
           if(Math.abs(diff) <=.001){
               return 0;
           } else if (diff > 0){
               return 1;
           } else {
               return -1;
           }
      
       }
       return 1;
   }
   public String toString(){
       return "Rectangle: "
       +" length: " + length + " "
       +" width: " + width + " ";
   }
}

answer this:

What value is stored in this variable result:

1)

Rectangle r = new Rectangle(2, 4);

double result = r.getPerimeter()*r.getArea()%r.NUM_OF_SIDES;

2)

Rectangle r = new Rectangle(3,3);

double result = 2;

if(r.equals(r.toString())){

result -= 5;

}else{

result *= 2;

}

result += r.getArea(2);

(if you can please explain how you got answer, thanks)

Explanation / Answer

What value is stored in this variable result:

1)

Rectangle r = new Rectangle(2, 4);

double result = r.getPerimeter()*r.getArea()%r.NUM_OF_SIDES;

Answer: 0.0

Rectangle area here is 8 and perimeter is 16

So result = (16 * 8) % 4 will return 0.0 value

2)

Rectangle r = new Rectangle(3,3);

double result = 2;

if(r.equals(r.toString())){

result -= 5;

}else{

result *= 2;

}

result += r.getArea();

Answer; 13.0

Rectanle width and height is 3 and 3 so area is 9

nitially result value is 2

then if condition will return false so else block will execute so result = result + 2 means result = 2+ 2 = 4

finally we are adding result value with area so result = 4 + 9 = 13.0

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