Skip to main content

Function overloading in Java

Function Overloading:-
..........................................................................................................

using this we will create the same name function only parameters will be different.

we can reduce method area from memory and provide better usability of method in a single program.


note:-

in case of overloading, parameters should be different type based on a number of parameters and combination of parameters.
overloading concept is not based on argument.

add(int,int)

add(int,int,int)


add(int ,float)
add(float,int)


overloading is based on input parameters, not based on the output type.

void add(int a,int b)
{

}
int add(int x,int y)
{

}

if add(int, int) already exists then it will not redefine.



in case of overloading if we use Integer class then it can be redefined.
void add(int a,int b)
{

}
void add(int a,Integer b)
{

}
void add(Integer a,Integer b)
{

}
void add(Integer a,int b)
{

}

.......................................................................................................

Inheritance:-
..................................................................................

it means reusebility, using this we can adopt the features of base class to the derived class.

Inheritance operation always will be used to implement composition, aggregation, and generalization in the program.



Composition means provide dependency to one class into another.

the base class will work as a main component and subclass will work as a subcomponent .java use single inheritance to provide composition.

aggregation means to combine different classes set into one class but java does not support aggregation because Java does not provide multiple inheritances using class.

generalization means to provide a hierarchical view to different classes using base class to child class.


Type of Inheritance:-

1 Single:-  Base class to derived class


2 Multilevel:-  Base class to derived class to sub derived class


3 Hierarchical:-   it will provide inheritance using tree structure

                                     Base

                  Dereived1                Dereived2

     Derive11                               Derive21    



.....................................................................................
Single:-
class Admin
{


}

class Employee extends Admin
{


}

multilevel

class Admin
{

}
class Employee extends Admin
{

}

class OtherStaff extends Employee
{


}
...


Hierarchical:-

  class Admin
  {

  }
  class Employee extends Admin
  {

  }
  class Otherstaff extends Admin
  {

  }

..................................................................................

WAP  to create only three objects of any class?

WAP to create parametrized multidimensional array and perform multiplication with overloading concept?

WAP to overload a simple interest program with all possible parameters?

WAP implement inheritance program of ADMIN, EMPLOYEE and OTHER STAFF class


Comments

Popular posts from this blog

Uncontrolled form input in React-JS

  Uncontrolled form input in React-JS? If we want to take input from users without any separate event handling then we can uncontrolled the data binding technique. The uncontrolled input is similar to the traditional HTML form inputs. The DOM itself handles the form data. Here, the HTML elements maintain their own state that will be updated when the input value changes. To write an uncontrolled component, you need to use a ref to get form values from the DOM. In other words, there is no need to write an event handler for every state update. You can use a ref to access the input field value of the form from the DOM. Example of Uncontrolled Form Input:- import React from "react" ; export class Info extends React . Component {     constructor ( props )     {         super ( props );         this . fun = this . fun . bind ( this ); //event method binding         this . input = React . createRef ();...

JSP Page design using Internal CSS

  JSP is used to design the user interface of an application, CSS is used to provide set of properties. Jsp provide proper page template to create user interface of dynamic web application. We can write CSS using three different ways 1)  inline CSS:-   we will write CSS tag under HTML elements <div style="width:200px; height:100px; background-color:green;"></div> 2)  Internal CSS:-  we will write CSS under <style> block. <style type="text/css"> #abc { width:200px;  height:100px;  background-color:green; } </style> <div id="abc"></div> 3) External CSS:-  we will write CSS to create a separate file and link it into HTML Web pages. create a separate file and named it style.css #abc { width:200px;  height:100px;  background-color:green; } go into Jsp page and link style.css <link href="style.css"  type="text/css" rel="stylesheet"   /> <div id="abc"> </div> Exam...

JDBC using JSP and Servlet

JDBC means Java Database Connectivity ,It is intermediates from Application to database. JDBC has different type of divers and provides to communicate from database server. JDBC contain four different type of approach to communicate with Database Type 1:- JDBC-ODBC Driver Type2:- JDBC Vendor specific Type3 :- JDBC Network Specific Type4:- JDBC Client-Server based Driver  or JAVA thin driver:- Mostly we prefer Type 4 type of Driver to communicate with database server. Step for JDBC:- 1  Create Database using MYSQL ,ORACLE ,MS-SQL or any other database 2   Create Table using database server 3   Create Form according to database table 4  Submit Form and get form data into servlet 5  write JDBC Code:-     5.1)   import package    import java.sql.*     5.2)  Add JDBC Driver according to database ide tools     5.3)  call driver in program         ...