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 the principle concepts of oops?

956

How does hashmap work in java ?

1050

What are the differences between string, stringbuffer and stringbuilder?

1025

What is an immutable object? How do you create one in java?

1065

How do you create immutable object in java?

1044

What are the uses of synchronized keyword?

1001

In java, what is the difference between method overloading and method overriding?

1118

What is the purpose of garbage collection in java?

1093

What kind of variables can a class consist?

1057

What are the differences between path and classpath variables?

1042

How do you differentiate abstract class from interface?

961

Is it possible to override private or static method in java?

994

What does the ‘static’ keyword mean? Is it possible to override private or static method in java?

984

Difference between the transient, persistent and detached state in hibernate?

337

What are the key components of a hibernate configuration object?

433

Un-Answered Questions { Java J2EE }

Is liferay a cms?

394

How to handle exceptions in spring mvc environment?

429

What are the properties of thread?

928

What is java life cycle?

1003

When using a federated repository, is there a way to ensure that my file-based registry will continue to function when a LDAP server is down?

878

What is difference between char array and string?

1115

What is the difference between multitasking and multithreading in Java

1181

What is a java application server?

919

Describe what a thread-local variable is in java?

1012

Implement a stack with push (), pop() and min() in O(1) time.

1112

Why is jms used?

847

What is java reflection api?

1012

What is activemq used for?

955

Can we override protected method in java?

1065

What is the application context?

374

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