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 is the difference between Error, defect,fault, failure and mistake?

HCL,

1205

What are assertions in java?

Impetus,

1 2153

How are java objects passed to a method and what are native methods?

Genpact,

1081

What is scope & storage allocation of global and extern variables? Explain with an example

IBS,

1042

Explain with example the concept of constant variable in java.

HCL,

1180

what is the purpose of "virtual"?

EDS,

1085

What is the reason behind using constructors and destructors?

HCL,

1062

Detail discussions on JVM, memory management and garbage collector.

Expedia,

985

How can we make a class virtual?

Fidelity,

1114

What are the basic concepts of OOPS in java?

Axtria, ITC Indian Tobacco Company,

1036

What is garbage collection? Can it be forced to run?

Global Logic,

1008

Give differences between Quicksort & Mergesort. When should these sorts be used and what is their running time?

Genpact,

1068

Write a function for palindrome and factorial and explain?

Honeywell, Huawei, Zomato,

1075

What is the use of a conditional inclusion statement in Java ?

Global Logic,

1095

Why main function is static?

MCN Solutions,

1247

Un-Answered Questions { Java J2EE }

Difference between == and .equals() ?

1001

Is it possible to use Semaphore/ Mutex in an Interrupt Handler?

1092

What is the use of @requestbody annotation in spring?

373

What packages are used by jdbc?

949

What are different types of second level cache?

371

What is the spring framework and why is it so popular?

406

What do you mean by bean managed transaction?

1049

What is use of @service in spring?

405

What does .equals do in java?

1096

What is the difference between servlet and filter?

949

What is the advantage of hibernate?

365

How can I scroll through list of pages like the search results in google?

969

What is api in servlet?

1023

Explain the different types of memory used by jvm?

1146

Why we do exception handling in java and how many types of exceptions are there?

1127

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