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 preemptive scheduling and time slicing?

1067

Explain the use of sublass in a java program?

1025

List primitive java types?

1033

Where import statement is used in a java program?

1130

What is mutable object and immutable object?

1128

What is difference between path and classpath?

1174

What are the supported platforms by java programming language?

1045

What is a values collection view ?

1086

Define canvas?

984

What will be the default values of all the elements of an array defined as an instance variable?

1030

What’s the difference between the methods sleep() and wait()?

1012

What’s the difference between constructors and other methods?

1000

Is it possible to define a method in java class but provide it’s implementation in the code of another language like c?

1025

Is it correct to say that due to garbage collection feature in java, a java program never goes out of memory?

1019

What environment variables do I need to set on my machine in order to be able to run java programs?

1016

Un-Answered Questions { Java J2EE }

What is difference between first level cache and second level cache in hibernate?

399

How does ejb container work?

961

What do you mean by compiler?

1043

What is a heavyweight component?

1024

What are the Static and Dynamic Variables? Differentiate them.

1112

How do you define a set in java?

1018

Explain about complier design(phases)

1084

what are mq commands?

952

What is the difference between ArrayList and Vector? which one is better in Java

1140

What is the importance of init() method in Servlet ?

1085

What is a command to stop and start nodeagent?

892

How can one EJB be called from within another EJB?

986

What is Enterprise JavaBeans Query Language (EJB QL)?

953

How to integrate your struts application with spring?

435

What is hikari in spring boot? : Spring Boot

520

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