Skip to main content

JSP

JSP is a technology for developing web pages that support dynamic content which helps developers insert java code in HTML pages by making use of special JSP tags, most of which start with <% and end with %>.

        A Java Server Pages component is a type of java Servlet that is designed to fulfil the role of a user for web application.

        Using JSP, we can separate business logic from presentation(View) logic. Also, using JSP we can collect input from the user through web page forms, present records from a database, and create web pages dynamically. In these all situations mainly we will use JSP.

Life Cycle of JSP?
        JSP have three life cycle methods, jspInit(), jspService(), jspDestroy(). You can override jspInit() and jspDestroy() methods. But, you don't override jspService() method.  In the below diagram represents the completed JSP life cycle,


[Image Not Loading]
Translation: When a request is sends to server first time and server identifies right resource(JSP) to handle a request. JSP is first translated to a Servlet.

Compilation: After translating to a servlet. It gets compiled and create class file for servlet.

Initialization: After successfully creating a class file, JSP engine will call jspInit() to initialize class file.

Service: After initialization, service(jspService()) method is called and it handles the request and create response to be delivered to browser.

Destroy: Once the service is completed and response is sent back, jspDestroy() method is called and it will clean up the resources.

Comments

Post a Comment

Popular posts from this blog

JNDI configuration for Tomcat 9 with Oracle

In this article, I am going to place the required source code to get data from the table by using the JNDI configuration. Below are the environment details that I have configured currently. Windows - 7 Oracle - 10g Tomcat - 9 JDK - 8 Eclipse Oxygen Ojdbc6 jar required First, we need to create the Dynamic Web Project. If you don't know how to do <Click Here>. I have faced a lot of issues before getting the output like 405, No driver class to load, etc. I am using JSP & Servlets in the current explanation. Before started writing the application logic, we need to do the below configuration in the installed tomcat directory. Place OJDBC6.jar in the Tomcat LIB directory. Add this Resource under <GlobalNamingResources> in Server.xml file which is present under the conf directory in Tomcat. < Resource name = "jdbc/myoracle" global= "jdbc/myoracle" auth = "Container" type= "javax.sql.DataSource" driverClass...
Post a Comment
Read more

Prime, Fibonacci and Factorial number with example in java

Prime number, Fibonacci series and Factorial number programs are most commonly asked questions in interview. Read this article to know what is and how to write programs for prime number, fibonacci series and factorial number. Prime Number: prime number is natural number greater than 1 that has no positive divisor other than 1 and itself. A natural number greater than 1 is not a prime number, is called Composite number . For example, 7 is a prime number. Because it can divide with 1 and 7 only. Where as 8 is composite number. Since it has the divisor 2 and 4 in addition to the 1 and 8. The below example represents the finding the passing number is prime number or not. If the passing number is prime number it will print true otherwise it will print false. package com . javatbrains . practice ; public class PrimeNumber { public boolean isPrimeNumber ( int number ) { if ( number <= 1 ) return false ; // There's only one ...
1 comment
Read more

Multithreading in java with example

Multithreading  is one of the most important concept in core java. In this article we will learn what is multithreading? , what is the use of it? and What is the use of Synchronization and when to use it?  with detailed examples. At a time, two or more threads are accessing the same object is called as Multithreading  in Java .  First, we will create two threads for two objects. It is also possible to run two or more threads on a single class object. In this case, there is a possibility to get unreliable results. If the two threads are perform same task, then they need same object to be executed each time. For your better understanding, take an example of any reservations like, railway, movie ticket booking,etc. Let us think only one berth is available in a train and two passengers are asking for that berth. The first person has sent a request to allocate that ticket/berth to him. At the same time, the second person also sent a request to allocate that ...
1 comment
Read more