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 do we need hashmap in java?

1116

How does queue work in java?

984

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?

1042

Why collection is called framework in java?

990

How to print an arraylist in java?

1085

Why vector is used in java?

1025

Why set do not allow duplicates in java?

1101

Is vector synchronized in java?

999

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?

976

Un-Answered Questions { Java J2EE }

What is the difference between Session bean and Entity bean?one?

1138

What is two-phase commit in the database?

1051

Can a class have multiple constructors?

1059

What is @joincolumn?

664

Will the compiler creates a default constructor if I have a parameterized constructor in the class?

1113

Can a static class have a constructor?

1003

How is string stored in java?

1060

What is oop principle in java?

1163

Can you explain how can os authentication be connected with weblogic jdriver for oracle and connection pools?

985

What is oem odm?

413

What is servlet interface?

1232

What are the core classes of the struts framework?

940

What is a conditional equation?

1045

What are the key features of the ejb technology?

1078

Why do we need jdbc?

1064

For More Un-Answered { Java J2EE } Questions Click Here