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

How many ways to remove the session object in the container

Bosch,

6 18184

How to perform Singleton of the java class object on multi JVM?

2 12587

How to send a request to garbage collector?

4 8250

while working struts in intellij 7.0error unable to initialize tld location cache: zip file is closed is displayed anybdy can answer me immdialy .ungert

Banking,

2550

when i run Frame program, it display output in supparate window.i try to close using "X" it not close.min'-' & max'+' are working.pls what is problem? i run in editplus. folowing program i given. import java.awt.*; class Form1 { Frame f1=new Frame("loginpage"); Label l1=new Label("username"); Label l2=new Label("password"); TextField tf1=new TextField(); TextField tf2=new TextField(); Button b1=new Button("submit"); Form1() { f1.setLayout(new FlowLayout()); f1.add(l1); f1.add(tf1); f1.add(l2); f1.add(tf2); f1.add(b1); f1.setSize(437,440); f1.setVisible(true); //f1.dispose(); } public static void main(String[] args) { Form1 f=new Form1(); } }

4 9199

java.lang.IllegalArgumentException: The path of an ForwardConfig cannot be null while working with struts it displayed pls very ungent

IBM,

3 21915

What happens when database down in weblogic

HCL,

8 24513

What is the use of RequestDispatcher in servlet?

Accenture, CTS, TCS,

18 55799

How can you say HashMap is syncronized?

Arete, IBM,

14 20938

difference between sql exception class and sql warning class

1 6263

How to handle when the database crashes while reading the data from the database?

IBM,

2 6830

can v create a constructor 4 servlet?

Satyam,

7 14226

which pattern is default in scanner package?

Satyam,

2235

what is d difference between deep cloning and shallow cloning in core java?

Satyam,

3 17549

what is the use of private constructor in core java?

OnMobile, Satyam, Yash Technologies,

3 19619

Un-Answered Questions { Java J2EE }

What does orm consists of?

354

What does a spring bean definition contain?

434

What is a numeric digit?

1085

What are the advantages of object-relational mapping (orm)?

872

What is a function in programming?

1041

Is the empty set a singleton?

977

When should you prefer to use doget() over dopost()?

1156

What is message driven beam?

1068

What is adapter in java?

921

How substring() method of string class create memory leaks?

1046

A non-static inner class may have object instances that are associated with instances of the class’s outer class. A static inner class does not have any object instances.

1014

What are the queues in the java collection framework? : java collections

1024

why are there separate wait and sleep methods? : Java thread

1024

What is the class in swing to change the appearance of the frame in runtime?

1050

What is collection mapping?

371

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