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

Core Java (6529)
Advanced Java (552)
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Servlets (804)
Struts (701)
JDBC (771)
JMS (324)

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

Java J2EE Interview Questions

Questions Answers Views Company eMail

Why do we need hashmap in java?

1116

How does queue work in java?

986

Why constructor has no return type?

1099

Why for each loop is used?

1013

What are the loops in java?

987

How to use arraylist in java netbeans?

1043

Why collection is called framework in java?

990

How to print an arraylist in java?

1087

Why vector is used in java?

1026

Why set do not allow duplicates in java?

1103

Is vector synchronized in java?

1003

Can set contain duplicates?

996

Can we create our own daemon thread?

981

Why stringbuilder is not thread safe in java?

1015

Is string is a keyword in java?

977

Un-Answered Questions { Java J2EE }

How to implement relationships in hibernate?

462

What is fatal error?

1022

Is sizeof a keyword in java programming?

1067

What is a null point?

1078

What is difference between path and classpath variables?

1094

What is the exact difference in between Unicast and Multicast object? Where will it be used?

1060

Explain different types of thread priorities ?

1083

Why parameters should be passed by reference?

972

What is the purpose of jms?

870

What is the role of a handler in mvc based applications?

1223

Why is flag used in java?

1075

What is the purpose of form-be tag in struct-config.xml?

962

Which is better 64 bit or 32 bit?

944

Can you pass functions in java?

1027

How can we find the actual size of an object on the heap?

1316

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