Question

Define an interface called Shape that requires methods to get x and y, and a method to calculate the area. Call these methods getX(), getY(), and getArea(). Write a class called MyRectangle that implements the Shape interface and contains:

the double data fields x, y , and width with get and set methods

a no-arg constructor that creates a default rectangle with 0 for both x and y and 1 for both length and width

a constructor that creates a rectangle with the specified x, y , length, width

a method getX() that returns x location value of the rectangle

a method getY() that returns y location value of the rectangle

a method getArea() that returns the area of the rectangle

Answer 1

//Shape.java
public interface Shape {
    public double getX();
    public double getY();
    public double getArea();
}

//////////////////////////////////////////////

//MyRectangle.java
public class MyRectangle implements Shape {
    private double x,y, width, length;

    public MyRectangle() {
        x = 0;
        y = 0;
        width = 1;
        length = 1;
    }

    public MyRectangle(double x, double y, double width, double length) {
        this.x = x;
        this.y = y;
        this.width = width;
        this.length = length;
    }

    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 getWidth() {
        return width;
    }

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

    public double getLength() {
        return length;
    }

    public void setLength(double length) {
        this.length = length;
    }

    public double getArea() {
        return width*length;
    }
}