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 6290

what is ststic with example

Wipro,

2045

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

Accenture,

1 11411

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

ITC Infotech,

4 7481

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 10914

how to identify duplicate values in arraylist

TCS,

2 5505

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

HP,

3 6228

Does Java pass arguments by value or reference?

HeadStrong,

5 9472

Difference between JRE and JVM?

HeadStrong, Infotech,

3 7501

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 8169

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

HeadStrong,

6 9433

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

HeadStrong,

8 21379

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

1 4268

Can we have more than one action servlet?

HP,

7 14290

what is the difference between through and throws?

HCL,

2 6872

Un-Answered Questions { Java J2EE }

Can we have return statement in finally clause? What will happen?

964

What does modeldriven interceptor?

1071

What is difference between java and spring?

457

What is the difference between an inner class and a sub-class?

1008

Which is the class in java?

1040

What are the main concepts of oops in java?

1743

What is java 2 platform, standard edition (j2se)?

1015

What comes to mind when someone mentions a shallow copy in java?

1105

Is spring data jpa an orm?

417

What do the thread?class methods run() and start() do?

1032

What is api data?

990

What are the basic exceptions in jdbc?

1099

Explain what an application server does and it's major components.

950

Program to Find the second largest element in an array.

1184

What is cli in spring boot? : Spring Boot

399

For More Un-Answered { Java J2EE } Questions Click Here