ARTICLE

Creation of a Java Bean And How it is Used in Java Server Pages

Posted by Satyapriya Nayak in Articles | Java and .NET on July 29, 2011

Tags: java Bean, Java Server Pages, java tutorials, jdbc, JSP

Here you will see how to create a Java bean and how it is used in Java Server Pages (JSP)

Tweet
2674
3

Reader Level: Intermediate

Download Files:

Creation of a java bean and how it is used in a jsp.rar

Java bean: It is a development component for performing a task in an application. Any ordinary java class with a set of variables and methods can be called as javabean. The methods present in a java bean must follow a naming convention. A java bean can be used in a web application to store the state of the users.

Creation process of a java bean:

Create a class in a package as the bean class.
Provide the required variables as the properties.
Provide setter and getter methods for each of the variables.
Store the package folder inside a classes folder.
Compile the file as ordinary java file.

Store the following bean file in (E:\Servlet\WEB-INF\classes\pack1)

Example:

package pack1;
public class mybean
{
private String name,pass;
public void setName(String n)
   {
      name=n;
    }
     public void setPass(String p)
   {
      pass=p;
    }
public String getName()
    {
     return name;
      }
    public String getPass()
    {
     return pass;
      }
}

Compile of bean:- javac mybean.java

JavaBean

How to use this bean in JSP

Use <jsp:useBean>; this tag creates an instance of the javabean in a JSP.

Attribute

Class- this contains name of the bean class with its package.
Id-this contains name of the bean object.
Scope-this is an optional attribute. This can contain a value such as page/request/session/application.
Use <jsp:setProperty>; this tag calls setter methods of the bean.

Attribute

Name-this contains name of the bean object.
Property-this contains name of the property whose setter method required to be called.
Value-this contains value of the property to be assigned.
Use <jsp:getProperty>; this tag can be used to call getter methods of the bean and to print the return value into the response.

Attribute

Name-this contains name of the bean object.
Property-this contains name of the property whose getter method required to be called.

Program beantest.jsp

Save the following beantest.jsp file in your context folder (E:\Servlet)

<html>
<body bgcolor="yellow">
<p> <h3><center>Please enter your user name and
password</center></h3></p>
<form>
<center>username</center>
<center><input type ='text' name ="t1"></center>
<center>Password</center>
<center><input type ='password' name ="p1"></center>
<center><input type ='submit' value="submit" ></center>
</form>
<jsp:useBean class="pack1.mybean" id="mb1" />
<%
String s1=request.getParameter("t1") ;
String s2=request.getParameter("p1") ;
if(s1!= null){ %>
<jsp:setProperty name="mb1" property="name" value="<%= s1 %>" />
<jsp:setProperty name="mb1" property="pass" value="<%= s2 %>" />
<h2>Name is :<jsp:getProperty name="mb1" property="name" /></h2>
<h2>Password is :<jsp:getProperty name="mb1" property="pass" /></h2>
<% } %>
</body>
</html>

Running the file

http://localhost:8082/javaservlet/beantest.jsp

JavaBean

This Feature is Sponsored By

DynamicPDF Merger is a developers dream for interacting with any existing PDF documents. Merge, append, split, form fill, flatten stamp and so much more.

Display Records of Combobox in Java

Tags: combobox in Java, java tutorials, jdbc, servlet, servlet java
Create Tag Library Descriptor And Use in JSP

Tags: java, java tutorials, jdbc, JSP, Tag Library Descriptor in jsp, TLD

post comment

OK created a new JSP section. Cheers!

Posted by Mahesh Chand on Sep 08, 2011

Sir,It would be better to have a jsp section.

Posted by Satyapriya Nayak on Jul 29, 2011

Good to see some JSP articles. Satya, do you want us to create a new JSP section?

Posted by Mahesh Chand on Jul 29, 2011

COMMENT USING

PREMIUM SPONSORS

iPhone, Android & Web Development Services

Over-C is a holistic consortium of communications and technology specialists. We build, deploy and market both business as well as consumer products and solutions.

TRENDING UP

Create Outlook Add-in by MAPI Functionality by Using Visual Studio 2010 Outlook Project Debugging jQuery in ASP.NET How to Enable Sign in as Different User Option in SharePoint 2013 Top 10 HTML5 Interview Questions Find and Delete Duplicate Records From SQL Table Custom Paging With GridView in ASP.NET 4.5 Panel Default Button is Not Working For Rad Combobox Encrypt and Decrypt in SQL Server: Part 2 Working With Database in HTML5 Extending WinJS ListView With Custom Item Events

View All

MOST LIKED ARTICLE

WCF Introduction and Contracts - Day 1 Create SSRS Report Using Report Wizard CREATE READ UPDATE and DELETE - CRUD Operation Using LINQ to SQL WCF - Data Contract - Day 4 Factory Design Pattern

Follow @twitterapi

Options	Votes	%
Lenovo	30	8.57
HP	11	3.14
Dell	200	57.14
Toshiba	54	15.43
Acer	43	12.29
Sony	12	3.43
Total	350	100%

In Focus

Creation of a Java Bean And How it is Used in Java Server Pages

Related Articles


Favorite Computer Manufacturer

Who is your favorite Computer manufacturer?

Lenovo HP Dell Toshiba Acer Sony