java practice set 10,chapter 10

 package com.company;

class circle{
    public int radius;
    circle(){
        System.out.println("not param of circle");
    }
    circle(int r){
        System.out.println("circle parameterized constructor");
        this.radius =r;
    }

    public double area(){
        return  Math.PI*this.radius*this.radius ;
    }
}


class cylinder extends  circle{
    public  int height;
    cylinder(int r,int h){
        super(r);
        System.out.println("cylinder parameterized constructor");
        this.height=h;
    }

    public  double volume(){
        return  Math.PI*this.radius*this.radius * this.height;
    }
}



class Rectanglee{
    public int length, breadth;
    Rectanglee(int a, int b){
        this.length=a;
        this.breadth=b;
    }
}



class Cuboid extends Rectanglee{
    public int side;
    Cuboid(int s, int a, int b){
        super(a,b);
        this.side=s;
    }

}


class Rectangle1{
    public int length, breadth;
    Rectangle1(int p, int d){
        this.length=p;
        this.breadth=d;

    }

    public void setBreadth(int breadth) {
        this.breadth = breadth;
    }

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

    public int getLength() {
        return length;
    }

    public int getBreadth() {
        return breadth;
    }

    public int area(){
        return this.length*this.breadth;
    }


}

class cuboid extends Rectangle1{
    public int side;
    cuboid(int s, int p, int d){
        super(p,d);
        this.side=s;
    }
    public void setSide(int side){
        this.side=side;
    }

    public int getSide() {
        return side;
    }

    public int volume(){
        return this.side*this.side*this.side;
    }

}

public class cwh_chapter10_practice_set {
    public static void main(String[] args) {

        //problem1-----create a class circle use inheritance to create another class cylinder from it
        //problem3-----create methods for area and volume problem1
        circle objc=new circle(12);
        cylinder obj =new cylinder(12,4);



        //problem2-----create class rectangle use inheritance to create another cuboid try to keep as close of real world scenarios
        //problem4---method for area and volume in problem 2also create getter and setter
        Rectanglee objr=new Rectanglee(4,5);
        Cuboid objl =new Cuboid(5,2,7);

    }
}


















/*
answer for question 2:
class Rectangle1{
    public int length, breadth;
    Rectangle1(int a, int b){
        this.length=a;
        this.breadth=b;
 }
}
class cuboid extends Rectangle1{
    public int side;
    cuboid(int s, int a, int b){
        super(a,b);
        this.side=s;
    }

}


answer for question 4:
class Rectangle1{
    public int length, breadth;
    Rectangle1(int p, int d){
        this.length=p;
        this.breadth=d;

    }

    public void setBreadth(int breadth) {
        this.breadth = breadth;
    }

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

    public int getLength() {
        return length;
    }

    public int getBreadth() {
        return breadth;
    }

    public int area(){
        return this.length*this.breadth;
    }


}

class cuboid extends Rectangle1{
    public int side;
    cuboid(int s, int p, int d){
        super(p,d);
        this.side=s;
    }
    public void setSide(int side){
        this.side=side;
    }

    public int getSide() {
        return side;
    }

    public int volume(){
        return this.side*this.side*this.side;
    }

}




 */