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

Difference between doublesummarystatistics, intsummarystatistics and longsummarystatistics ?

984

Difference between final and effectively final ? Why is effectively final even required ?

985

Similarity and difference between static block and static method ?

917

Difference between class#getinstance() and new operator ?

1203

What is a lambda expression ? What's its use ?

1100

Describe what happens when an object is created in java ?

1002

Difference between == and .equals() ?

998

What are default methods ?

1039

Does constructor creates the object ?

1030

What are the difference between composition and inheritance in java?

1027

How is abstraction implemented in java ?

999

How can we disable a constraint ?

1022

Does sql allow null values ? Can we use it within where clause ?

973

Write an sql to find all records having all numeric characters in a field ?

962

Explain the difference between inner and outer join ?

1028

Un-Answered Questions { Java J2EE }

What different fetching strategies are of hibernate?

434

What is hibernate query object?

415

Explain the two tier and three tier architecture of jdbc.

901

What are the different types of spring bean auto wiring?

412

What does java ide mean?

1131

What is the functionality of a message listener in the context of jms?

815

What is an example of declaration?

1003

What are the ways to instantiate the class class?

1100

Is binary a low level language?

915

What is int argc char * argv?

1150

What is meant by data hiding/encapsulation?

1104

What is the use of @controller in spring?

412

How do I support both get and post from the same servlet?

1205

What is java jit compilers?

1007

In a class implementing an interface, can we change the value of any variable defined in the interface?

1083

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