Problem 7: Shape Hierarchy Create a class named “Shape” which has the two sub-classes: “Circle” and “Rectangle”. Create another class named “Square” which inherits “Rectangle” Class. The class definitions are as follows: Shape String color (private) public Shape() { //set color to “red”} public Shape(String color) {// assign the color} public double getArea() {//return -1} Circle double radius (private) public Circle(double radius) {…} public Circle(String color, double radius) {…} public double getArea() {//returns area of the circle} Rectangle double dim1 (private), double dim2 (private) public Rectangle(double dim1,double dim2){…} public Rectangle(String color, double dim1,double dim2) {….} public double getArea() {//returns area of the rectangle} Square public Square(double dim1) {…} public Square(String color, double dim1) {…} public double getArea() {//returns area of the square} [Tips: For square dim1 and dim2 are equal] Now complete the class methods to run the following main class. Notice you can only add getter/setter methods in the above classes if necessary, Nothing else. public class Main { public static void main(String[] args) { Shape s; Circle c=new Circle(2); c.getArea(); s=new Circle(3,"Green"); s.getArea(); Rectangle r= new Rectangle(“Blue",10,20); r.getArea(); s= new Rectangle(20,30); s.getArea(); s= new Square("Green",10); s.getArea(); Square b=new Square(5); b.getArea(); } }

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Problem 7: Shape Hierarchy

Create a class named “Shape” which has the two sub-classes: “Circle” and “Rectangle”. Create another class named “Square” which inherits “Rectangle” Class. The class definitions are as follows:

Shape	String color (private) public Shape() { //set color to “red”} public Shape(String color) {// assign the color} public double getArea() {//return -1}
Circle	double radius (private) public Circle(double radius) {…} public Circle(String color, double radius) {…} public double getArea() {//returns area of the circle}
Rectangle	double dim1 (private), double dim2 (private) public Rectangle(double dim1,double dim2){…} public Rectangle(String color, double dim1,double dim2) {….} public double getArea() {//returns area of the rectangle}
Square	public Square(double dim1) {…} public Square(String color, double dim1) {…} public double getArea() {//returns area of the square} [Tips: For square dim1 and dim2 are equal]

Now complete the class methods to run the following main class. Notice you can only add getter/setter methods in the above classes if necessary, Nothing else.

public class Main {
    public static void main(String[] args) {
       Shape s;
        Circle c=new Circle(2);
        c.getArea();
        s=new Circle(3,"Green");
        s.getArea();
        Rectangle r= new Rectangle(“Blue",10,20);
        r.getArea();
        s= new Rectangle(20,30);
        s.getArea();
        s= new Square("Green",10);
        s.getArea();
        Square b=new Square(5);
        b.getArea();
    }
}