Question

please do in java and comments the code so i can understand

Requirements:

• Create a Java class named “MyRectangle2D.java”.
• Your class will have double two variables named x and y. These will represent the center point of your rectangle.
• Your class will have two double variables named width and height. These will represent the width and height of your rectangle.
• Create getter and setter methods for x, y, width, and height.
• Create a “no argument” constructor for your class that sets x to 0, y to 0, width to 1, and height to 1. Have this constructor output your first and last name.
• Create a constructor for your class that has x, y, width, and height input parameters.
  • If the x or y input parameters are less than 0.0, set them to be 0.0
  • If the width or height input parameters are less than 1.0, set them to be 1.0
• Create method myTop that returns the y coordinate of the top of the rectangle
  • This would be y + 0.5*height.
• Create method myBottom that returns the y coordinate of the bottom of the rectangle
  • This would be y – 0.5*height.
• Create method myLeft that returns the x coordinate of the left side of the rectangle
  • This would be x – 0.5*width.
• Create method myRight that returns the x coordinate of the left side of the rectangle
  • This would be x + 0.5*width.
• Create method getArea that returns the area of the rectangle
  • The area is the width * height
• Create method getPerimeter that returns the perimeter of the rectangle
  • The perimeter is 2 * width + 2 * height
• Create method contains(double inX, double inY) that returns true if the point (inX,inY) is inside the rectangle and false otherwise.
• To test your program, I will create a class with a main method that creates instances of your MyRectangle2D class, calling all the constructors and method.
• For example, assume a rectangle was created with x=2.0, y=1.0, width=1.0, and height=2.0
  • getX would return 2.0
  • getY would return 1.0
  • getWidth would return 1.0
  • getHeight would return 2.0
  • myTop would return 2.0
  • myBottom would return 0.0
  • myLeft would return 1.5
  • myRight would return 2.5
  • getArea would return 2.0
  • getPerimeter would return 6.0
  • contains(1.75,0.9) would return true
  • contains(2.5,2.25) would return false

Answer 1

//Java code

public class MyRectangle2D {
/**
 * double two variables named x and y.
 * These will represent the center point of your rectangle.
 */
private double x;
private double y;
/**
 * two double variables named width and height.
 * These will represent the width and height of your rectangle.
 */
private  double width;
private double height;
/***
 * getter and setter methods for x, y, width, and height.
 */
    public double getX() {
        return x;
    }

    public void setX(double x) {
        if(x<0)
            x=0;
        this.x = x;
    }

    public double getY() {

        return y;
    }

    public void setY(double y) {
        if(y<0)
            y=0;
        this.y = y;
    }

    public double getWidth() {
        return width;
    }

    public void setWidth(double width) {
        if(width<1)
            width=1;
        this.width = width;
    }

    public double getHeight() {

        return height;
    }

    public void setHeight(double height) {
        if(width<1)
            width=1;
        this.height = height;
    }
    /**
     * a “no argument” constructor for your class that
     * sets x to 0, y to 0, width to 1, and height to 1.
     * Have this constructor output your first and last name.
     */
    public MyRectangle2D()
    {
        x=0;
        y=0;
        height=1;
        width=1;
    }
    /**
     *  a constructor for your class that has x, y,
     *  width, and height input parameters.
     */
    public MyRectangle2D(double x, double y, double width, double height) {
      setX(x);
      setY(y);
      setHeight(height);
      setWidth(width);
    }
    /**
     *  myTop that returns the y coordinate of the top of the rectangle
     * This would be y + 0.5*height.
     */
    public double myTop()
    {
        return  y + 0.5*height;
    }
    /**
     *  method myBottom that returns the y coordinate
     *  of the bottom of the rectangle
     * This would be y – 0.5*height.
     */
    public double myBottom()
    {
        return y-0.5*height;
    }
    /**
     *  method myLeft that returns the x
     *  coordinate of the left side of the rectangle
     * This would be x – 0.5*width.
     */
    public double myLeft()
    {
        return x - 0.5*width;
    }
    /**
     *  method myRight that returns the x
     *coordinate of the left side of the rectangle
     * This would be x + 0.5*width.
     */
    public double myRight()
    {
        return  x + 0.5*width;
    }
    /**
     * method getArea that returns the area of the rectangle
     * The area is the width * height
     */
    public double getArea()
    {
        return height*width;
    }
    /**
     *  method getPerimeter that returns the perimeter of the rectangle
     * The perimeter is 2 * width + 2 * height
     */
    public double getPerimeter()
    {
        return 2*(width+height);
    }
    /**
     * method contains(double inX, double inY) that returns true if the point
     * (inX,inY) is inside the rectangle and false otherwise.
     */
    public boolean contains(double inX, double inY)
    {
        return (
                x>inX && y >inY &&
              x + width >inX  &&
              y + height > inY);
    }
}

//============================

public class Main {
    public static void main(String[] args)
    {
        /**
         * creates instances of your MyRectangle2D class,
         * calling all the constructors and method.
         */
        /**
         *  a rectangle was created with x=2.0, y=1.0, width=1.0, and height=2.0
         */
        MyRectangle2D rectangle2D = new MyRectangle2D(2.0,1.0,1.0,2.0);
        //getX would return 2.0
        System.out.println("getX would return 2.0");
        System.out.println(rectangle2D.getX());
        //getY would return 1.0
        System.out.println("getY would return 1.0");
        System.out.println(rectangle2D.getY());
        //getWidth would return 1.0
        System.out.println("getWidth would return 1.0");
        System.out.println(rectangle2D.getWidth());
        //getHeight would return 2.0
        System.out.println("getHeight would return 2.0");
        System.out.println(rectangle2D.getHeight());
        //myTop would return 2.0
        System.out.println("myTop would return 2.0");
        System.out.println(rectangle2D.myTop());
        //myBottom would return 0.0
        System.out.println("myBottom would return 0.0");
        System.out.println(rectangle2D.myBottom());
        //myLeft would return 1.5
        System.out.println("myLeft would return 1.5");
        System.out.println(rectangle2D.myLeft());
        //myRight would return 2.5
        System.out.println("myRight would return 2.5");
        System.out.println(rectangle2D.myRight());
        //getArea would return 2.0
        System.out.println("getArea would return 2.0");
        System.out.println(rectangle2D.getArea());
        //getPerimeter would return 6.0
        System.out.println("getPerimeter would return 6.0");
        System.out.println(rectangle2D.getPerimeter());
        //contains(1.75,0.9) would return true
        System.out.println("contains(1.75,0.9) would return true");
        System.out.println(rectangle2D.contains(1.75,0.9));
        //contains(2.5,2.25) would return false
        System.out.println("contains(2.5,2.25) would return false");
        System.out.println(rectangle2D.contains(2.5,2.25));
    }
}

//Output

"C:\Program Files\Java\jdk1.8.0_221\bin\java.exe" ... getX would return 2.0 2.0 gety would return 1.0 1.0 getWidth would return 1.0 1.0 getHeight would return 2.0 2.0 my Top would return 2.0 2.0 myBottom would return 0.0 0.0 myLeft would return 1.5 1.5 myRight would return 2.5 2.5 getArea would return 2.0 2.0 getPerimeter would return 6.0 contains(1.75,0.9) would return true true contains (2.5,2.25) would return false false Process finished with exit code o

//If you need any help regarding this solution...... please leave a comment..... thanks