Answer / ashok

Callback methods are those which are called automatically
by the application/system when a particular condition has
been met.It could be Event handling, or methods in servlet
life cycle etc.eg: Servlets callback method destroy() will
be called by the container while container is shutting
down.

Answer / robz

This type of methods are generally called by the container,
the developer does not need to call these methods
explicitly. Most of the languages specifies the callback
method by passing the address of the subroutine to the
system to the request is calling back from, But java
performs the same thing by using interfaces. Java does not
allow passing the address of subroutine but allows passing
an instance of a class that implements the standard
interface. For this purpose anonymous classes are mainly
used as they support a better compact definition of the
class that is required as a new class.

Answer / shakir khan

These methods allow the container to notify the bean of
events in its life cycle.These methods are defined in
javax.ejb.EntityBean

please mail me the interview question based on java/j2ee

0 Answers   Wipro,

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what is acl(access control list)?

1 Answers   Athena, HCL,

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Hi Friends, i have searched in google but not clear. can you give bank example with synchronized keyword

0 Answers   TCS,

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0 Answers  

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how to deploy the web application ?

2 Answers   Accent,

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2 Answers   Span Systems,

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Q1. A. Write note on "The class path Environment Variable". B. Which are different kinds of source code? Q2. A. How to create an interface? B. Why convert an applet to an application? Q3. A. How to use Media tracker Class. B. How to use string tokenizer class. Q4. A. Explain the overview of UDP messaging. B. Difference between SQL Exception class and SQL Warning class. Q5. A. How to create com object in Java? B. Write short notes on "The properties class" Q6. A. When object is created and destroyed? B. Explain the JDB in depth & command line. C. Write short notes on Web Sites.

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can u draw class/object diagram for ATM

0 Answers   HCL, Zycus Infotech,

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HOW MUCH PERCENTAGE WE DEDUCT FOR OUR SUPPLIERS OR OTHER PROFESSIONALS

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what is the difference between banking and insurance domain?

2 Answers  

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How to implement or use the singleton class in java?

3 Answers  

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