Member functions

Methods Returning Value

If we want to use our member function/method in an expression then such member function/method must return a value by using a return statement.Return statement returns value at point from where function/method is called

Syntax:

return value;

#Program to create 2 rectangles a and b of size 5 x 7 and 10 x 20 . Calculate their total Area.

Design a class Rectangle

Data members

Length
Breadth

Member Functions

Area()
setdimension(m,n)

  class Rectangle
  {
    private int length,breadth;
    public void area()
    {
        int a =length*breadth;
    System.out.println("Area is "+a);
    }
    public void setdimension(int m,int n)
    {
        length=m;
        breadth=n;
    }
  }
  class demo
  {
    public static void main(String args[])
    {
        rectangle a,b;
        a=new rectangle();
        b=new rectangle();
        a.setdimension(5,7);
        b.setdimension(10,20);
        int z=a.area()+b.area();
        System.out.println("Total area is"+z);
        System.out.println("Area of a is"+ a.area());
        System.out.println("Area of b is"+ b.area());
    }
  }

Total Area is 235 
Area of a is 35 
Area of b is 200

#Program to create 2 workers a (wages=500 ,wdays=5 ) b (wages=750 , wdays=2 ). Calculate Total payment of both workers.

Design a class Worker

Data members

wages
wdays

Member Functions

setData(w,d)
payment()

  class Worker
  {
    private int wages,wdays;
    public int payment()
    {
        int p=wages*wdays;
        return p ;
    }
    public void setData(int w,int d)
    {
        wages=w;
        wdays=d;
    }
  }
  class demo
  {
    public static void main(String args[])
    {
        Worker a,b;
        a=new Worker();
        b=new Worker();
        a.setData(500,5);
        b.setData(750,2);
        int z=a.payment()+b.payment();
        System.out.println("Total Payment is "+z);
    }
  }

Total Payment is 4000

CCITcoder

Introduction to Java

DataType and Operation

Conditional statements

Iterative statements

Functions

OOPs

String

Static Data members

Inherintance

Polymorphisam

Applets

AWT

MultiThreading

I/o

Exception Handling

Collection FrameWork