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)

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J2EE (485)
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Websphere (573)

Java J2EE Interview Questions

Questions Answers Views Company eMail

when i write string s1="java"; in one program(application) and string s2="java"; in another application on the same jvm will both objects s2,s2 will refer to same memory location where "java" is stored in string pool.

2 5836

Is Struts Action class Thread Safe?

Wipro,

14 54217

Why operator overloading is not in Java?

2163

What is the difference between throw and throws? What is the similarity between try and throw?

2 5902

Is it possible to create Userdefined Unchecked Exception also?If Yes, give an example?

HCL,

1 4845

What is the need of "creating and throwing an UserdefinedException" when the "Exception" class is already available?

4 6957

Is it possible to create Userdefined Unchecked Exception also?If Yes, give an example?

ADP,

2 9001

What is JIT ?

Satyam,

4 10292

How to implement or use the singleton class in java?

3 8291

can we add two numbers without using arthematic operators? if possible how?

CTS,

5 10005

why the equals method can be override?when we override the equals method?

5 11354

why the wait,notify,notifyall methods are placed in object class?these are the thread concepts why these methods are placed in Object class?

Global Logic, Satyam,

2 11747

using equals method overriding which objects are compared?i.e same class objects or other class objects?Explain me.

4 6617

If set accepts only one argument then how can it compare two objects to avoid duplicates

5 7414

can u override the start() method of Thread class

5 20434

Un-Answered Questions { Java J2EE }

what are the different modes of archival? Explain each mode in two lines each?

994

What is lazy class?

481

Realized?

2257

What is a constructor overloading in java?

1122

How to sort array in descending order in java?

987

Write a program to find the whether a number is an Armstrong number or not?

1095

What is the difference between break and continue statements?

1118

What is an object in java and how is it created?

1128

What do you know about validation plugin ?

1024

Hi frnd can i any one kindly can post for me portlet,hibernate and spring example application and with flow explantion configuration using Jdeveloper.and related links ar tutorials kindly please send me .its urgent for me .thanks in advance...........else can any one send to kondaiah.goddeti@gmail.com

2259

How can you inject java collection in spring?

504

Can we return resultset in java?

988

i want test pattern of zylog company and some examples also

2856

explain different ways of using thread? : Java thread

1079

What are the differences between heap and stack memory in java?

1128

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