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 can I right-justify a string?

Aspire, Infogain,

1181

How would overload a function based on return type?

Genpact,

969

Which method you will use to create a new file to store some log data. Each time a new log entry is necessary, write string to the file in java ?

HCL,

1161

Write a program to find the whether a number is an Armstrong number or not?

Aspire, Infogain,

1034

Is it possible to use Semaphore/ Mutex in an Interrupt Handler?

Ciena,

1094

Explain Basics of OOP Language in java

Atos Origin,

1062

What is an empty class? What functionality does it offer in Java?

Deloitte, EXL, JPMorgan Chase,

1275

Give any two differences between C++ and java.

GrapeCity,

1148

What do you mean by Hash Map and Hash Table?

Atos Origin,

1096

Why is String immutable?

Atos Origin,

1063

What is a local block?

Global Logic,

1144

What do you mean by exception handling in Java?

Atos Origin,

1297

What are dot operator queries?

Atos Origin,

1105

What are annotations in java?

Impetus,

1095

What is the use of a copy constructor?

Flextronics,

992

Un-Answered Questions { Java J2EE }

What is sar file?

874

What is the name of default jvm that is made used for weblogic?

1056

What is the dispatcher servlet?

986

What is a jms listener?

820

What is use of @transactional?

435

Is it possible to connect to multiple databases simultaneously? Using single statement can one update or extract data from multiple databases?

1022

What are the jdbc drivers in java?

1072

When should I use a custom login module versus a TAI to assert identity information?

882

What is a boolean structure?

1089

What is oop principle in java?

1167

List some of the design patterns used in the spring framework?

436

State some situations where exceptions may arise in java?

1060

Explain the servlet filter.

983

How do struts work?

935

Can we use string in switch case in java?

1058

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