Please add Commenting (commented each line of the code and used proper variable naming conventions which are self explanatory.) on this

Square, will implement a data type Square that represents squares with the x and y coordinates of their upper-left corners and the length.

The API should be as follows.

Square(double x, double y, double length) //constructor double area() //returns the area of the square double perimeter() //returns the perimeter of the square boolean intersects(Square b) //does this square intersect b? Two squares would intersect if they share one or more common points boolean contains(Square b) //does this square contain b? void draw() //draw this square on standard drawing

Code:

import java.util.Scanner;

public class Square {

private double x;

private double y;

private double length;

// Getters and Setters for the private members

public double getX() {

return x;

}

public void setX(double x) {

this.x = x;

}

public double getY() {

return y;

}

public void setY(double y) {

this.y = y;

}

public double getLength() {

return length;

}

public void setLength(double length) {

this.length = length;

}

//Constructor

public Square(double x, double y, double length) {

this.x = x;

this.y = y;

this.length = length;

}

//To calculate are of square

public double area() {

return this.length * this.length;

}

//To calculate perimeter of Square

public double perimeter() {

return 4 * length;

}

// To check if two squares intersect

public boolean intersect( Square s)

{

double p1X = this.x;

double p1Y = this.y;

double p2X = this.x + this.length;

double p2Y = this.y - this.length;

// If one rectangle is on left side of other

if (p1X > (s.getX() + s.getLength()) || s.getX() > p2X)

return false;

// If one rectangle is above other

if (p1Y < (s.getY() - s.getLength()) || s.getY() < p2Y)

return false;

return true;

}

//To check if second square is inside another

public boolean contains(Square s) {

double p1X = this.x;

double p1Y = this.y;

double p2X = this.x + this.length;

double p2Y = this.y - this.length;

double s1X = s.getX();

double s1Y = s.getY();

double s2X = s.getX() + s.getLength();

double s2Y = s.getY() - s.getLength();

if(s1X < p1X && s1Y > p1Y && s2X > p2X && s2Y < p2Y)

return true;

return false;

}

public static void main(String args[]) {

Square s = new Square (0.2,0.7,0.3);

System.out.println("The area is : " + s.area());

System.out.println("The perimeter is : " + s.perimeter());

System.out.println("Enter the upper-left coordinates and the length of a square:");

Scanner scanner = new Scanner(System.in);

String[] inputs = scanner.nextLine().split(" ");

double a = Double.parseDouble(inputs[0]);

double b = Double.parseDouble(inputs[1]);

double c = Double.parseDouble(inputs[2]);

Square sq = new Square (a,b,c);

if(s.intersect(sq) == true)

System.out.println("It intersects the first square");

else

System.out.println("It doesnot intersects the first square");

if(s.contains(sq) == true)

System.out.println("It contains the first square");

else

System.out.println("It doesnot contain the first square");

scanner.close();

}

}