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,

1063

How do you implement tree mirroring in java?

EXL, HCL,

1066

Explain the key functions of data binding?

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

1014

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

Infosys,

1139

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

Impetus,

1012

Explain the difference between a Thread and a Process.

Ciena,

992

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

Global Logic,

1056

Does java support multiple inheritance or not?

Hexaware,

1093

How can you read content from file in java?

HCL,

998

What is run time allocation?

Fidelity,

1019

How can we avoid including a header more than once?

Fidelity,

1031

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

GrapeCity,

1022

Where to store local variables?

Aspiring Minds,

1096

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

Aspire, Infogain,

1284

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

Hexaware, Virtusa,

1256

Un-Answered Questions { Java J2EE }

What is called an advice?

406

Explain the features are in servlet 3?

1047

What is struts?

976

What are different orm tools?

347

What is @autowired required false?

1031

Define "Access specifiers" in java.

1163

Is null a keyword in java?

969

Explain about IBM Web Sphere edge server?

953

What is query in hibernate?

380

Why do we need orm?

381

Can you call one constructor from another if a class has multiple constructors?

1032

What are the disadvantages of object oriented programming?

1266

What is Client-Server Computing?

2418

Is sessionfactory a thread-safe object?

314

Why java is called robust and secure?

984

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