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

Why transient variables wont participate in serialization?

2 6306

what is ststic with example

Wipro,

2051

what is purpose of collections.unmodified() method..?

Accenture,

1 11419

what is purpose of writting public static void main(Strind arg[]) in java..?

ITC Infotech,

4 7500

What is the code inside the public void actionPerformed(ActionEvent ae) override method in Applet [ Condition:- you have one TextField and One Button , you have to enter any color name inside the TextField, when you click on Button Your background will change according to your input color name]

IBM,

2 10945

how to identify duplicate values in arraylist

TCS,

2 5517

Different between Struts and Spring? or Why use Spring, if you are already using Struts?

HP,

3 6245

Does Java pass arguments by value or reference?

HeadStrong,

5 9508

Difference between JRE and JVM?

HeadStrong, Infotech,

3 7540

Will it be called overriding if I do not change the parameters or return type, instead throw a different exception in the method signature.

HeadStrong,

4 8185

How will the struts know which action class to call when you submit a form?

HeadStrong,

6 9468

If I define a method in JSP scriplet <%..%>, where will it go after translation into a servlet?

HeadStrong,

8 21422

Why use a datasource when you can directly specify a connection details? (in a J2EE application)

1 4279

Can we have more than one action servlet?

HP,

7 14326

what is the difference between through and throws?

HCL,

2 6880

Un-Answered Questions { Java J2EE }

Explain about struts dispatch action?

999

What is the difference between the web server and application server?

887

Can It is possible to synchronize the constructor of a Java Class?

1133

How you can deliver a java message to a non-java client?

825

Can we call the constructor of a class more than once for an object?

1097

What is ejb container?

1160

What is the use of hibernate proxy in hibernate?

450

What is the transient keyword?

2183

What are the restrictions imposed by a Security Manager on Applets?.

2614

What is the use of parse function in java?

987

Which server does spring boot use? : Spring Boot

449

What is the difference between update and upgrade?

503

What do you understand by the bean persistent property?

1010

What is a java list?

1123

What is jdbc driver in java?

933

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