J2EE APIs

By: aathishankaran Emailed: 1767 times Printed: 2515 times    

Latest comments
By: rohit kumar - how this program is work
By: Kirti - Hi..thx for the hadoop in
By: Spijker - I have altered the code a
By: ali mohammed - why we use the java in ne
By: ali mohammed - why we use the java in ne
By: mizhelle - when I exported the data
By: raul - no output as well, i'm ge
By: Rajesh - thanx very much...
By: Suindu De - Suppose we are executing

J2EE APIs

The Java 2 Platform, Standard Edition (J2SE) SDK is required to run the J2EE SDK and provides core APIs for writing J2EE components, core development tools, and the Java virtual machine. The J2EE SDK provides the following APIs to be used in J2EE applications.

Enterprise JavaBeans Technology 2.0

An enterprise bean is a body of code with fields and methods to implement modules of business logic. You can think of an enterprise bean as a building block that can be used alone or with other enterprise beans to execute business logic on the J2EE server.

There are three kinds of enterprise beans: session beans, entity beans, and message-driven beans. Enterprise beans often interact with databases. One of the benefits of entity beans is that you do not have to write any SQL code or use the JDBC API directly to perform database access operations; the EJB container handles this for you. However, if you override the default container-managed persistence for any reason, you will need to use the JDBC API. Also, if you choose to have a session bean access the database, you have to use the JDBC API.

JDBC API 2.0

The JDBC API lets you invoke SQL commands from Java programming language methods. You use the JDBC API in an enterprise bean when you override the default container-managed persistence or have a session bean access the database. With container-managed persistence, the container handles database access operations, and your enterprise bean implementation contains no JDBC code or SQL commands. You can also use the JDBC API from a servlet or JSP page to access the database directly without going through an enterprise bean.

The JDBC API has two parts: an application-level interface used by the application components to access a database, and a service provider interface to attach a JDBC driver to the J2EE platform.

Java Servlet Technology 2.3

Java Servlet technology lets you define HTTP-specific servlet classes. A servlet class extends the capabilities of servers that host applications accessed by way of a request-response programming model. Although servlets can respond to any type of request, they are commonly used to extend the applications hosted by Web servers.

JavaServer Pages Technology 1.2

JavaServer Pages technology lets you put snippets of servlet code directly into a text-based document. A JSP page is a text-based document that contains two types of text: static template data, which can be expressed in any text-based format such as HTML, WML, and XML, and JSP elements, which determine how the page constructs dynamic content.

Java Message Service 1.0

The JMS is a messaging standard that allows J2EE application components to create, send, receive, and read messages. It enables distributed communication that is loosely coupled, reliable, and asynchronous

Java Naming and Directory Interface 1.2

The JNDI provides naming and directory functionality. It provides applications with methods for performing standard directory operations, such as associating attributes with objects and searching for objects using their attributes. Using JNDI, a J2EE application can store and retrieve any type of named Java object.

Because JNDI is independent of any specific implementations, applications can use JNDI to access multiple naming and directory services, including existing naming and directory services such as LDAP, NDS, DNS, and NIS. This allows J2EE applications to coexist with legacy applications and systems.


Java Home | All Java Tutorials | Latest Java Tutorials

Sponsored Links

If this tutorial doesn't answer your question, or you have a specific question, just ask an expert here. Post your question to get a direct answer.



Bookmark and Share

Comments(0)


Be the first one to add a comment

Your name (required):


Your email(required, will not be shown to the public):


Your sites URL (optional):


Your comments:



More Tutorials by aathishankaran
Web Security Issues
The Web User's Perspective
Server-side plug-Ins
The best way to avoid security vulnerabilities with new server
JavaScript Security
Window Object
Working with Status Bar Messages
Retrieving a Portion of a String
Referencing Windows
Math Object
Frame Object
Document Object
Closing Windows
Built-in Object in Javascript
Textarea Object

More Tutorials in Java
Update contents of a file within a jar file
Tomcat and httpd configured in port 8080 and 80
Java File
Java String
Count number of vowels, consonants and digits in a String in Java
Reverse a number in Java
Student marks calculation program in Java
Handling Fractions in Java
Calculate gross salary in Java
Calculate average sale of the week in Java
Vector in Java - Sample Program
MultiLevel Inheritance sample in Java
Multiple Inheritance sample in Java
Java program using Method Overriding
Java program to check if user input is an even number

More Latest News
Most Viewed Articles (in Java )
A Serialization Example in Java
Type Casting in Java
instanceof sample program in Java
Using One-Dimensional Arrays in Java
Method Overriding in Java
indexOf( ) and lastIndexOf( ) in Java
The java Buzzwords
Write to a file in Java - Sample Program
XML and Java - Parsing XML using Java Tutorial
Student marks calculation program in Java
Handling Fractions in Java
Calculate gross salary in Java
Calculate average sale of the week in Java
Java program to check if user input is an even number
HTTPS Java - URL Connection program. Using HttpsURLConnection
Most Emailed Articles (in Java)
Converting a number into its equalant value in words in Java
java.lang.reflect package
Disadvantages of using Native methods in Java
What is UCS? What is ISO 10646?
Generating Your Key Pair example using keytool in Java
Operator Precedence in Java
PushbackReader sample program in Java
concat(), replace(), and trim() Strings in Java
instanceof sample program in Java
Use of - new - in Java
The Benefits of OOP
Increment and Decrement Operator
Characters in java
The continuing Revolution of java
Why java is important to the Internet