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 do you understand by abstract classes?

HCL,

1075

How do you implement tree mirroring in java?

EXL, HCL,

1077

Explain the key functions of data binding?

Akamai Technologies, Aspire, Impetus, Infogain, Tavant Technologies, Virtusa,

1021

What is Major and importance difference between for and foreach loop ?

Infosys,

1151

What is the use of generics? When was it added to the Java development Kit?

Impetus,

1019

Explain the difference between a Thread and a Process.

Ciena,

1000

How many JVMs can run on a single machine and what is the Just-In-Time(JIT) compiler?

Global Logic,

1058

Does java support multiple inheritance or not?

Hexaware,

1100

How can you read content from file in java?

HCL,

1004

What is run time allocation?

Fidelity,

1024

How can we avoid including a header more than once?

Fidelity,

1040

Define max and min heap, also the search time of heap.

GrapeCity,

1027

Where to store local variables?

Aspiring Minds,

1106

How do you declare an array that will hold more than 64KB of data?

Aspire, Infogain,

1293

What is the difference between member variables initialization and assignment in a constructor?

Hexaware, Virtusa,

1272

Un-Answered Questions { Java J2EE }

How to get data from the velocity page in a action class?

960

Is hibernate part of spring?

396

What is the difference between super class & sub class?

1193

What is shared libraries?

882

Brief description about local interfaces?

1270

What is the difference between long.class and long.type?

1111

Explain the concept of dispatcher servlet.

410

Describe in brief RequestDespatcher?

1139

What does the string method compareto () do?

1059

What is pojo implementation?

411

Should I use orm or not?

457

What are job parameters in spring batch?

506

What ioc means?

459

Is java pass by value or pass by reference?

994

What is the benefit of factory pattern?

504

For More Un-Answered { Java J2EE } Questions Click Here