Single Inheritance using Java

Write a program in Java to implement Single Inheritance

Program:

class
Rectangle

 {

  double l,b;

  Rectangle(double x,double y)

   {

    l=x;

    b=y;

   }

  double CalArea()

    {

     return (l*b);

    }

 }

class Box
extends Rectangle

 {

  double h;

  Box(double x,double y,double z)

   {

    super(x,y);

    h=z;

   }

  double CalVol()

    {

     return (l*b*h);

    }

}

class
Sk10

 {

  public static void main(String args[])

   {

    Box obj1=new Box(5.5,6.5,75);

    double a1= obj1.CalArea();

    double v1= obj1.CalVol();

    System.out.println("Area= "+a1);

    System.out.println("Volume=
"+v1);

    }

 }

Compile:

D:\>javac
Sk10.java

Run:

D:\>java
Sk10

Output:

Area =
35.75

Volume =
268.125