Parameterized constructor using Java

Write a program in Java to define two classes, main and a sub
class.

v Create a method
within the subclass and call it from the main class

v Create a
parameterized constructor

Program:

class
Rectangle

 {

  float length,breadth;

  Rectangle(float a,float b)

   {

   length=a;

   breadth=b;

   }

  float area()

   {

    return (length*breadth);

   }

 }

 class Sk04

 {

  public static void main(String args[])

   {

    Rectangle ob1=new Rectangle(5.5f,6.5f);

    float ar1=ob1.area();

    System.out.println("Area =
"+ar1);

   }

 }

Compile:

D:\>javac
Sk04.java

Run:

D:\>java
Sk04

Output:

Area =
35.75