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

What is Byte Message ?

1 2532

What is the difference between Byte Message and Stream Message?

1 4312

Are you aware of any major JMS products available in the market?

1 2169

What are the different types of messages available in the JMS API?

1 2479

What are the different messaging paradigms JMS supports?

1 2561

What is the difference between topic and queue?

1 2279

How Does the JMS API Work with the J2EE Platform?

1 2222

What is the role of JMS in enterprise solution development?

1 2209

What is the use of Message object?

1 2164

What is the basic difference between Publish Subscribe model and P2P model?

1 2414

What is the use of BytesMessage?

1 2099

What is the use of StreamMessage?

1 2406

What is the use of TextMessage?

1 2113

Why do the JMS dbms_aqadm.add_subscriber and dbms_aqadm.remove_subscriber calls sometimes hang when there are concurrent enqueues or dequeues happening on the same queue to which these calls are issued?

1 2469

Why do the TopicSession.createDurableSubscriber and TopicSession.unubscribe calls raise JMSException with the message "ORA - 4020 - deadlock detected while trying to lock object"?

1 2153

Un-Answered Questions { Java J2EE }

What role does the session interface play in hibernate?

289

Why struts 1 classes are not thread safe whereas struts 2 classes are thread safe?

937

Why is spring preferred over struts?

470

Can we have multiple catch block for a try block?

1019

What is the use of volatile in java?

1059

I tried to run two of the applets in the examples directory of the distribution? : BEA Weblogic

924

Where should struts xml be placed?

927

What is the difference between class & object?

1018

What is hibernate hbm2ddl auto?

457

What is loose coupling in spring?

430

How are multi-byte characters used with weblogic jdriver?

1002

What are the two ways in which thread can be created?

1053

What is identifier with example?

1049

How many modules layers are there in spring?

438

Why jsp is better than servlet?

1035

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