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

Explain when we should make an instance variable private.

1139

What is finalize()?

1209

When should we create our own custom exception classes?

1035

Can we pass a primitive type by reference in java? How

949

When do I need to use reflection feature in java?

1092

Why does java have two ways to create child threads? Which way is better?

1067

Why does java have different data types for integers and floating-point values?

1028

What is byte code and why is it important to java’s use for internet programming?

1148

Is finalize() similar to a destructor?

1042

Explain the difference between protected and default access.

1016

Explain how to convert any java object into byte array.

988

What is finalize()? Is finalize() similar to a destructor?

979

Explain the use of shift operator in java. Can you give some examples?

991

What is difference between add() and addelement() in vector?

1546

Describe how to implement singleton design pattern in struts.

1020

Un-Answered Questions { Java J2EE }

Is java pass by value or pass by reference?

1002

What are the disadvantages of node manager?

1136

Explain the performance tuning in jdbc?

991

how to make a index.jsp for running the site in internet and find an error for connection with weblogic server and java that give an error invalid object name.and how to maintain session.

2254

What is method reference in java?

1159

What is a pojo class in hibernate?

429

What is jdbc and its types?

978

What is the difference between client and server database cursors?

1192

What is difference between authorization and authentication?

480

What does @inject mean in java?

1113

Explain what is an EJB Context?

1058

Why am I getting an ora-01000: maximum open cursors exceeded error, even though I closed all resultset, statement, and connection objects? : BEA Weblogic

1038

What is javafx java?

1032

how to define a buffer pool for holding messages in main storage? Explain?

896

Explain about instanceof operator in java?

1064

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