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 are temp tables ?

980

What is database deadlock ?

1176

What should be done for auto generating primary key id in a table ?

973

Can we have foreign key reference to a non primary key column ?

977

What's the benefit for specifying constraints like not null, primary key explicitly instead of specifying it against the column ?

960

If you are given a choice to implement the code to either insert a record or update if already exist, which approach will you follow ?

994

What is database deadlock ? How can we avoid them?

1049

Describe the steps needed to execute a sql query using jdbc.

979

Which constraint cannot be specified as an explicit constraint and should be specified with the column only ?

927

What is jdbc? Describe the steps needed to execute a sql query using jdbc.

913

Does sql allow null values ?

964

Write an sql to find all records having all upper case alphanumeric characters in a field ?

938

What are the different class loaders used by jvm?

1093

Describe, in general, how java's garbage collector works?

1035

What is threadfactory?

1091

Un-Answered Questions { Java J2EE }

Explain annotation-based (@aspectj based) aspect implementation?

481

How do you create a first line indent?

997

How to integrate spring and hibernate?

416

What is jdbc class forname?

960

What is binary search in java?

986

Is a mapping in hibernate?

360

Which collection is ordered in java?

969

How action mapping is configured in Struts?

1105

What is different between session and sessionfactory in hibernate? (Detailed answer)

339

Explain the role of dispatcherservlet and contextloaderlistener.

1184

What is a pojo class in hibernate?

413

What is the use of @resource annotation in spring?

408

How we can run a jar file through command prompt in java?

960

Can a class have multiple constructors?

1035

What is the latest technology used in java?

1028

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