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 is the use of getGeneratedKeys() method in Statement?

1011

What are different types of ResultSet?

1057

What is JDBC ResultSet?

1138

When do we get java.sql.SQLException: No suitable driver found?

960

How does JDBC API helps us in achieving loose coupling between Java Program and JDBC Drivers API?

1075

What is JDBC DataSource and what are it’s benefits?

1205

How to get the Database server details in java program?

1068

What is JDBC PreparedStatement?

958

How to set NULL values in JDBC PreparedStatement?

976

How to insert an image or raw data into database?

993

What is the difference between execute, executeQuery, executeUpdate?

1026

What is Apache DBCP API?

1003

What is JDBC Batch Processing and what are it’s benefits?

1017

What is difference between java.util.Date and java.sql.Date?

1109

What are the different types of locking in JDBC?

1009

Un-Answered Questions { Java J2EE }

Is it necessary to register controller command in cmdreg table?

1040

Is vector thread safe in java?

1048

What is data string?

962

Whats is a starter store?

871

What is root context?

410

What is the difference between weblogic and jboss?

973

Which is more beneficial: CMP or BMP?

1026

What is the use of dispatcher servlet?

462

What is an algorithm in java collection framework? : java collections

1052

How do you declare a destructor in java?

993

What’s the difference between the methods sleep() and wait()?

1009

Why we use while rs next ())?

952

What do you mean by autowiring in spring?

388

How many types of array are there?

1005

What is jdbc and odbc?

934

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