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 runtime exceptions?

1166

Which number is denoted by leading 0x or 0x in java?

1053

What is the default value of an object reference declared as an instance variable?

1131

If a variable is declared as private, where may the variable be accessed?

1067

Why do we need wrapper classes?

1077

What is the range of the short type?

1023

What is hashmap and map?

1035

When is the arraystoreexception thrown?

1031

Can a top level class be private or protected?

1061

Is it necessary that each try block must be followed by a catch block?

1024

Can we have any other return type than void for main method?

958

In a class implementing an interface, can we change the value of any variable defined in the interface?

1098

What is the difference between error and an exception?

1165

How destructors are defined in java?

1197

What is the difference between inner class and nested class?

1101

Un-Answered Questions { Java J2EE }

Define how objects are stored in java?

1073

What is the meaning of “dirty read” in the database?

1038

What is jdbc and its advantages?

1066

What is preinitialization of a servlet?

1034

explain copyonwritearraylist and when do we use copyonwritearraylist?

954

What is this () in java?

1033

What does next mean in java?

980

What is jms used for?

929

Is a mapping in hibernate?

376

What's the advantages using servlets than using cgi?

1008

What are the different types of methodologies?

1011

What is hibernate qbc api?

353

How does enum work in java?

1027

Why java is object oriented?

1044

Explain the different types of spring container?

428

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