Interview Question: What is the difference between EAR, JAR and WAR file?

By: Ash Emailed: 1728 times Printed: 2337 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

Question:What is the difference between EAR, JAR and WAR file?

Answer:

J2EE defines three types of archives:

1. Java Archives (JAR) A JAR file encapsulates one or more Java classes, a manifest, and a descriptor. JAR files are the lowest level of archive. JAR files are used in J2EE for packaging EJBs and client-side Java Applications.

2. Web Archives (WAR) WAR files are similar to JAR files, except that they are specifically for web applications made from Servlets, JSPs, and supporting classes.

3. Enterprise Archives (EAR) ”An EAR file contains all of the components that make up a particular J2EE application.

 

 

 

 

Interview Home | All Interview Tutorials | Latest Interview 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 Ash
Interview Question: What is the difference between Message Driven Beans and Stateless Session beans?
Interview Question: Is it possible to share an HttpSession between a JSP and EJB? What happens when I change a value in the HttpSession from inside an EJB?
Interview Question: What is the difference between find and select methods in EJB?
Interview Question: What is the difference between JavaBean and EJB?
Interview Question: What is abstract schema?
Interview Question: What is local interface. How values will be passed?
Interview Question: What is Message Driven Bean?
Interview Question: What are the call back methods in Entity bean?
Interview Question: What is deployment descriptor?
Interview Question: How many EJB Objects are created for a Bean?
Interview Question: What is re-entrant. Is session beans reentrant. Is entity beans reentrant?
Interview Question: What is lazy loading?
Interview Question: What is the difference between EAR, JAR and WAR file?
Interview Question: Can i map more than one table in a CMP?
Interview Question: Is Decorator an EJB design pattern?

More Tutorials in Interview
What is J2EE?
What do you understand by a J2EE module?
Tell me something about J2EE component?
What are the contents of web module?
Differentiate between .ear, .jar and .war files.
What is the difference between Session Bean and Entity Bean?
Why J2EE is suitable for the development distributed multi-tiered enterprise applications?
What do you understand by a container?
What are the services provided by a container?
What are types of J2EE clients?
What is Deployment Descriptor?
What do you understand by JTA and JTS?
What is JAXP?
What is J2EE Connector architecture?
What is difference between Java Bean and Enterprise Java Bean?

More Latest News
Most Viewed Articles (in Interview )
What is J2EE?
Interview Question: How do I install Struts?
Interview Question: What is Local client view in EJB?
Interview Question: What is the difference between EAR, JAR and WAR file?
What do you understand by a J2EE module?
What are the contents of web module?
What is the difference between Session Bean and Entity Bean?
Can Entity Beans have no create() methods?
What is Collection API?
What are Access Specifiers available in Java?
Interview Question: What is Struts?
Interview Question: How is the MVC design pattern used in Struts framework?
Interview Question: Who makes the Struts?
Interview Question: Why it is called Struts?
Interview Question: What is Action Class?
Most Emailed Articles (in Interview)
Interview Question: Where can I get help with Struts?
Interview Question: What is Local client view in EJB?
Interview Question: Can i map more than one table in a CMP?
What is bean managed transaction?
Interview Question: Write code of any Action Class?
Interview Question: Why do we need Struts?
Interview Question: What is the difference between JavaBean and EJB?
Tell me something about J2EE component?
What is JSP Output Comments?
Interview Question: What is Struts?
Interview Question: Is Struts compatible with other Java technologies?
Interview Question: How do I install Struts?
Interview Question: Why does EJB needs two interfaces(Home and Remote Interface)?
Interview Question: What is the difference between ejbCreate() and ejbPostCreate?
Interview Question: What is lazy loading?