Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java (6529)
Advanced Java (552)
Swing (223)
EJB (402)

Servlets (804)
Struts (701)
JDBC (771)
JMS (324)

SunOne (10)
J2EE (485)
Weblogic (694)
Websphere (573)

Java J2EE Interview Questions

Questions Answers Views Company eMail

Why is my jms work not part of a user transaction (i.e., Called within a transaction but not rolled back appropriately)? How do I track down transaction problems? : BEA Weblogic

928

How do I prevent errors when running t3dbping? : BEA Weblogic

897

What precautions should I take when I use blocking receive() calls? : BEA Weblogic

1002

How does a file store compare with a jdbc store? : BEA Weblogic

972

Why does jmssession.createtopic or jmssession.createqueue fail to create a destination in wls jms 6.1 (it worked in 5.1)? : BEA Weblogic

1045

How do I start wls and configure jms? : BEA Weblogic

1022

How do I use a startup class to initialize and later reference jms objects? : BEA Weblogic

976

Is it better to have more or fewer sessions for a given number of subscribers? : BEA Weblogic

1009

Can weblogic server start with a unix boot? : BEA Weblogic

978

When should I use server session pools and connection consumers? : BEA Weblogic

1016

How do I use jta transactions within an mdb? : BEA Weblogic

1026

How can I run multiple instances of the same servlet class in the same weblogic server instance? : BEA Weblogic

1019

How do I issue the close() method within an onmessage() method call and what are the semantics of the close() method? : BEA Weblogic

975

How do I increase weblogic server memory? : BEA Weblogic

1019

How do I use a less than or greater than on a message selector in ejb-jar.xml? : BEA Weblogic

976

Un-Answered Questions { Java J2EE }

Are global variables initialized to zero?

975

What is the Concept of Encapsulation in OOPS

1009

How does ejb invocation happens?

1017

What do you mean enterprise javabeans (ejb) container?

1145

Is java a security risk?

1063

How many bytes is double?

990

What do you mean Abstraction in java?

1107

What is inverse true in hibernate?

402

How many types of string data types are there?

1112

Explain the role of driver in jdbc.

1016

When will we prefer to use set and list in java and why?

981

What is 'throws advice' in spring?

399

what is servlet chaining?

1118

How can classpath be set?

1132

What is hibernate entitymanagerfactory?

352

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