calculate area of rectangle in java using class and object code example

Example: Calculate area of rectangle using class in java

// calculate area of rectangle using class in java
import java.io.*;
class RectangleShape 
{
   int length, breadth; 
   void setValue(int l, int b) 
   { 
       length = l; 
       breadth = b; 
   }
   // get area of rectangle
   int findArea() 
   { 
       return (length * breadth); 
   }
}
public class RectangleAreaDemo
{
   public static void main(String[] args)
   {
      RectangleJava obj = new RectangleJava(); 
      obj.setValue(10, 5); 
      System.out.println("Area of rectangle: " + obj.findArea());
   }
}