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 6299

what is ststic with example

Wipro,

2045

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

Accenture,

1 11418

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

ITC Infotech,

4 7493

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 10935

how to identify duplicate values in arraylist

TCS,

2 5513

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

HP,

3 6237

Does Java pass arguments by value or reference?

HeadStrong,

5 9487

Difference between JRE and JVM?

HeadStrong, Infotech,

3 7525

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 8176

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

HeadStrong,

6 9455

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

HeadStrong,

8 21408

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

1 4275

Can we have more than one action servlet?

HP,

7 14306

what is the difference between through and throws?

HCL,

2 6875

Un-Answered Questions { Java J2EE }

Which element of hbm.xml is used to map a java.util.set property in hibernate?

381

How do you connect web server to was?

954

What is difference between sorted collection and ordered collection, which one is better?

337

What is swing framework in java?

1043

How do you identify a weak entity?

418

what sync function does in websphere?

899

What is the effective way to make sure all the servlets are accessible only when user has a valid session?

1062

What are the orm tools?

347

What is the difference between a switch statement and an if statement?

1091

Write the code that maps the java object with the database tables?

453

What is spring ioc?

435

Can java arraylist hold different types?

1073

What is indexof in java?

1002

java program with complete 4 oops concepts implemented example

3156

Variable of the boolean type is automatically initialized as?

1010

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