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?

1161

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

1045

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

1125

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

1061

Why do we need wrapper classes?

1071

What is the range of the short type?

1022

What is hashmap and map?

1030

When is the arraystoreexception thrown?

1026

Can a top level class be private or protected?

1057

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

1020

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

956

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

1086

What is the difference between error and an exception?

1156

How destructors are defined in java?

1191

What is the difference between inner class and nested class?

1092

Un-Answered Questions { Java J2EE }

What are pending messages in the console? : BEA Weblogic

962

What’s the difference between hibernate and ejb 3? Don’t you think ejb 3 is just a clone of hibernate?

1008

Is hibernate a tool or framework?

350

What is jdbc databasemetadata interface?

1054

What is difference between PrintWriter and ServletOutputStream?

1294

What is string pool in java?

1023

How does arraylist work in java?

1122

What do you mean by struts.dev mode?

979

Why are swing components called lightweight components?

936

What is difference between @inject and @autowired?

423

What is byte data type?

1002

What is variable in java?

989

What is servlet and its advantages?

1054

What is correlated subquery?

2329

How can we group related actions in one group in Struts?

974

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