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 2514

What is the difference between Byte Message and Stream Message?

1 4302

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

1 2156

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

1 2461

What are the different messaging paradigms JMS supports?

1 2550

What is the difference between topic and queue?

1 2269

How Does the JMS API Work with the J2EE Platform?

1 2213

What is the role of JMS in enterprise solution development?

1 2201

What is the use of Message object?

1 2147

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

1 2405

What is the use of BytesMessage?

1 2092

What is the use of StreamMessage?

1 2396

What is the use of TextMessage?

1 2090

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 2460

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

1 2145

Un-Answered Questions { Java J2EE }

What is constructor injection?

386

What are the important features of Java 11 release?

1109

What is difference between hibernate and spring data jpa?

424

Why is stringbuffer called mutable?

989

Explain how a web logic server works?

1041

What is navigable map in java?

979

Name the eight primitive java types.

1122

how would you implement a thread pool? : Java thread

906

mention which resource can enhance ears support apart from shared libraries and data sources?

871

Explain methods specific to list interface?

971

Why map is used in java?

1026

How does ejbs work?

915

Can we assign null to double in java?

1013

Enlist and explain the main methods associated with the resource interface.

410

What is use of transaction in hibernate?

458

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