A class Shape is defined with two overloading constructors in it. Another class Test1 is partially defined which inherits the class Shape. The class Test1 should include two overloading constructors as appropriate for some object instantiation shown in main() method. You should define the constructors using the super class constructors. Also, override the method calculate( ) in Test1 to calculate the volume of a Shape.

 

A class Shape is defined with two overloading constructors in it. Another class Test1 is partially defined which inherits the class Shape. The class Test1 should include two overloading constructors as appropriate for some object instantiation shown in main() method. You should define the constructors using the super class constructors. Also, override the method calculate( ) in Test1 to calculate the volume of a Shape.

Program :

import java.util.Scanner;

class Shape{

double length, breadth;

Shape(double l, double b){ //Constructor to initialize a Shape object  

length = l;

breadth= b;

}

Shape(double len){    //Constructor to initialize another Shape object  

length = breadth = len;

}

double calculate(){// To calculate the area of a shape object

return length * breadth ;

}

}

public class Test1 extends Shape{

double height;

Test1(double length,double h) {

//base class constructor with one parameter is called

super(length);

height=h;

}

Test1(double length,double breadth,double h) {

//base class constructor having two argument is called

super(length,breadth);

height=h;

}

double calculate() {

return length*breadth*height;

}

public static void main(String args[]){

Scanner sc = new Scanner(System.in);//Create an object to read                                                               

                                          //input

double l=sc.nextDouble(); //Read length

double b=sc.nextDouble(); //Read breadth

double h=sc.nextDouble(); //Read height

Test1 myshape1 = new Test1(l,h);

Test1 myshape2 = new Test1(l,b,h);

double volume1;

double volume2;

volume1 = myshape1.calculate();

volume2=myshape2.calculate();

System.out.println(volume1);

System.out.println(volume2);

}

}

Sample Test Cases

	Input	Output
Test Case 1	2.0 3.0 4.0	16.0 24.0