Question

Create a Java Project in Eclipse with the following:

Include the Rectangle class supplied below.

Override the toString method for Rectangle.

Override the equals method for Rectangle.

Implement the comparable Interface for Rectangle (Compare by area)

Rectangle class:

public class Rectangle {
  
   private double length;
   private double width;
  
   public Rectangle(double l, double w)
   {
       length = l;
       width = w;
   }
  
   public double getLength()
   {
       return length;
   }
  
   public double getWidth()
   {
       return width;
   }
  
   public void setLength(double l)
   {
       length = l;
   }
  
   public void setWidth(double w)
   {
       width = w;
   }
  
   public void display()
   {
       System.out.print("Rectangle: lenght = " + length + ", width = " + width);
   }
}

Answer 1

public class Rectangle implements Comparable<Rectangle> {

    private double length;
    private double width;

    public Rectangle(double l, double w) {
        length = l;
        width = w;
    }

    public double getLength() {
        return length;
    }

    public double getWidth() {
        return width;
    }

    public void setLength(double l) {
        length = l;
    }

    public void setWidth(double w) {
        width = w;
    }

    public void display() {
        System.out.print("Rectangle: length = " + length + ", width = " + width);
    }

    @Override
    public String toString() {
        return "Rectangle: length = " + length + ", width = " + width;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        Rectangle rectangle = (Rectangle) o;
        return length == rectangle.length && width == rectangle.width;
    }
    
    @Override
    public int compareTo(Rectangle rectangle) {
        return Double.compare(length * width, rectangle.length * rectangle.width);
    }
}