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

Is singleton class thread safe?

996

How do you define a method?

977

Can inner class have constructor?

1042

What is difference between protected and private?

1077

Can we create object of static class?

1025

What is functional interface in java example?

991

What is supplier in java?

1003

How does singleton class work?

990

Is passing by reference faster?

996

Is singleton set an interval?

966

Is age a discrete variable?

977

Is singleton a bad practice?

1047

What is a function argument in java?

997

What are measurable parameters?

1077

How do you implement singleton class?

984

Un-Answered Questions { Java J2EE }

What does indexof return in java?

991

What is an introduction in aop?

415

What isolation level is used by the DBMS when inserting, updating and selecting rows from a database?

966

What is array initialization in java?

1097

What is the purpose of '@customvalidator'?

1025

What are the common JDBC problems that you got and how do you solved them?

2435

What is singleton math?

1130

What is difference between pointer and reference?

1067

What is the use of @required annotation?

411

What is the difference between dynamic and non-dynamic changes in the console?

1107

Mention some interfaces implemented by linked list in java.

1022

Explain jsessionid and when is it created?

1119

In which method of action class the business logic is executed?

985

Differentiate between vector and array list.

1066

what is an injection attack?

876

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