Simple Rectangle Class to be built. Intro to Programming in Java problem. Please

Question

Simple Rectangle Class to be built. Intro to Programming in Java problem. Please make sure your response compiles and works with the example below...see link below to copy/paste

http://cs.nyu.edu/~joannakl/cs101.06_s16/assignments/Assignment05.pdf

Problem 2 (40 points): Rectangle Class Following the example of the Circle class in your textbook, design a class named Rectangle to represent a rectangle. The class should contain: Two double data fields named width and height that specify the width and height of the rectangle. The data fields should be private. The default values are 0 for both width and height. » Two double data fields named width and height that specify the width and height of the rectangle. The data fields should be private. The ·A no-arg constructor that creates a default rectangle. ·A constructor that creates a rectangle with the specified width and height.

Explanation / Answer

//Two program Rectangle.java and TestRectangle.java both must be executed separately
//and keeping in the same folder
//class Rectangle contains two variables width and length ,both are private
//Rectangle.java
public class Rectangle
{
   private double length=0;
   private double width=0;
   public Rectangle() //default constructor or no arg constructor
   {
  
   }
   public Rectangle(double l,double w)   //constructor with specified width and height  
   {
       length=l;
       width=w;
   }
   public void setWidth(double w)   //setter method to set width of the rectangle
   {
       width=w;
   }
   public void setLength(double l)   //setter method to set length of the rectangle
   {
       length=l;
   }
   public double getWidth()       //getter method to get the value of the width
   {
       return width;
   }
   public double getLength()       //getter method to get the value of the length
   {
       return length;
   }
   public double getArea()       //getArea() method to return area of the Rectangle
   {
       return width*length;
   }
   public double getPerimeter()   //getPerimeter() method to return perimetre of the Rectangle
   {
       return width*length;
   }
}

//TestRectangle.java
//Using Rectangle class by creating different objects
public class TestRectangle
{
   public static void main(String args[])
   {
  
   Rectangle rec1=new Rectangle(); //creating default constructor without setting values,taking default values
   System.out.println("rectangle 1 :");
   System.out.println("dimensions: "+rec1.getWidth() +","+rec1.getLength());
   System.out.println("Area"+rec1.getArea());
   System.out.println("Perimetre"+rec1.getPerimeter());
    Rectangle rec2=new Rectangle(); //default Rectangle and then with setter methods
   rec2.setWidth(3.3333);  
   rec2.setLength(5.1);
   System.out.println("rectangle 2 :");
   System.out.println("dimensions: "+rec2.getWidth() +","+rec2.getLength());
   double area=rec2.getWidth()*rec2.getLength();
   System.out.println("Area"+area);
    double peri=2*(rec2.getWidth()+rec2.getLength());
   System.out.println("Perimetre"+peri);
    Rectangle rec3=new Rectangle(13.7,2.3); //creating two parameter constructor
   System.out.println("rectangle 3 :");
   System.out.println("dimensions: "+rec3.getWidth() +","+rec3.getLength());
   System.out.println("Area"+rec3.getArea());
   System.out.println("Perimetre"+rec3.getPerimeter());
   }
}
      
      
  

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