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

How objects are stored in java?

1032

Can a class have multiple constructors?

1034

Describe different states of a thread.

997

What are the various access specifiers for java classes?

1050

Can we call the constructor of a class more than once for an object?

1089

Is string a data type in java?

1016

I want to control database connections in my program and want that only one thread should be able to make database connection at a time. How can I implement this logic?

1099

Can we have two methods in a class with the same name?

1049

In the below example, what will be the output?

1022

What is the default access specifier for variables and methods of a class?

1200

What are the two ways of implementing multi-threading in java?

1 1497

What's the difference between comparison done by equals method and == operator?

967

How infinite loop is declared?

1015

What is default switch case? Give example.

1002

What is the difference between double and float variables in java?

1141

Un-Answered Questions { Java J2EE }

Is int a class in java?

982

How do generics work?

937

A client wants to preserve the reference to the ejbhome object of an enterprise bean instance and use it later. Which of the following can be serialized for this purpose?

993

What are the advantages of cookies?

1120

When do I need “struts.jar” on my classpath?

968

How vendor Naming registry supports JNDI?

2195

What can be the various reasons for a server crash?

1049

Can we have this () and super () together?

1041

Can you call a method in a method?

1083

Which data type is a class in java?

996

Why is singleton not thread safe?

1043

How do I write a self declaration?

1106

What is use of static in java?

1155

What are 3 boolean operators?

999

What is java lang string?

978

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