Vibs

• May 17th, 2007

Log4j is apache project...API used for logging purpose..You can have five various category of log defined and while coding you can write log as per the category..viz DEBUG,INFO,WARN,ERROR,FATAL..for gib projecct its advisable to use log4j instead of system.out.println.Thanks

Anindya Mandal

• Aug 9th, 2006

Log4j is the property file where you can assign the current application mode in"DEBUG", "INFO", "ERROR", "WARN" etc.sO at the time of  running the application you can see "DEBUG" , "ERROR", etc. related  messages in Tomcat Webserver.

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sbarik

 Profile Answers by sbarik Questions by sbarik

• May 12th, 2007

Reassign the standard error stream of java by using following method of System classpublic static void setErr(PrintStream err)then you print error messages by writting System.err.println("!!!!Error!!!");

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DJ

• Apr 12th, 2007

Static before main method is used because main method is called by the JVM, with out making any object of that class, since to call any method of the class we meed some obj of the class, but here befo...

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Programming Langauge,Development Enivironment,Application Environment,Deployment Environment.

sandhya

• Apr 4th, 2007

   Hi !       Can we Define Java as  a simple ,portable,platform independent programming language used for internet applications  

ramana

• Sep 19th, 2006

java is the one type of coffieand it is useful for developing for the real time fuctionalitiesex. debit cards

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Armstrong

• Apr 4th, 2007

MVC is not design pattern it is an Architecture The Framework which implements MVCArmstrong

Avinash U

• Jan 29th, 2006

Struts is open source implementation of MVC (Model-View-Controller) pattern for the development of web based applications. Jakarta Struts is robust architecture and can be used for the development of ...

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sandhya

• Apr 1st, 2007

     please dont create confusion in java we have single inheritance but not multiple inheritance and multiple inheritance can be accomplished by multiple interface inheritance in java

Renjith T V

• Jun 25th, 2006

Single inheritance, multilevel inheritance and hierarchial inheritance is allowed in java. Muliple inheritance and hybrid inheritance is not allowed because implementing these in Java will cause data...

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jdemaste

 Profile Answers by jdemaste Questions by jdemaste

• Mar 31st, 2007

If an object X is serialized and you perform modifications then you can ensure that the serialVersionUID  matches the first one and can thereby decieve the JVM. There are limits altering log...

sudheer

• Aug 11th, 2005

No we cannot fool the JVM It willr eject the wrong one by checking class id and definitions 

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xortha

• Mar 28th, 2007

when ejb server doesn't provide db specific method to provide primary key, e.g. for jboss - if you don't specify appropriate entries in jbosscmp-jdbc.xml's (<auto-increment/> for <...

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meeta

• Mar 27th, 2007

A reference object encapsulates a reference to some other object so that the reference itself may be examined and manipulated like any other object. Three types of reference objects are provided, each...

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Reena

• Mar 26th, 2007

  The doomed transaction acts like a read-only transaction. Reads may be done, but any statement that would result in a write to the transaction log will fail with error 3930

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dile_sahoo

 Profile Answers by dile_sahoo Questions by dile_sahoo

• Mar 21st, 2007

We can use CallableStatement to call a stored procedure from to our java application.InStatement and Prepared Statement object to send an sql statement to Database Server.

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santh kumar

 Profile Answers by santh kumar Questions by santh kumar

• Mar 20th, 2007

 it's an additional information to sahoo's answer only. RequestDispacher is an Interface ,it provides two methods.  forward() and include() Precisely to this context, container ...

dile_sahoo

 Profile Answers by dile_sahoo Questions by dile_sahoo

• Mar 17th, 2007

In case of the Dispatching a request we can use the relative path.Incase of Forwarding a request it internally execute the RequestDispathcher.forward() and forward() method cannot be used to dispatch ...

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Sathesh kumar

• Mar 18th, 2007

??In many software concern handle project based Projects ,and few are doing product that means there in no unique client for that projects and the developer or?programmer ?didnt know about the cli...

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syedashazama

• Mar 14th, 2007

The most simple and obvious reason is that any Object (not just a thread) can be the monitor for a thread. The wait and notify are called on the monitor. The running thread checks with the monitor. So the wait and notify methods are in Object and not Thread.

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bibhu

• Mar 9th, 2007

RequestDispatcher is used to redirect a request on the server side.It is used in the follwing way: getrequestdispatcher().forward() : forwards to a resource ie the control for the request and the resp...

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Vijay

• Mar 6th, 2007

J2EE is only a standards API used for Distributed Computing Asyncronous Communicatiosn Etc .. . . . . . . .

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Nandhu

• Mar 3rd, 2007

We can't change final value.
We can change constant value.

Satish Patil

• Feb 25th, 2007

Java doesnt have "constant" modifier

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Ch.Nagaraj

• Mar 1st, 2007

heavy weight means which occupies more memory i.e awt but these awt run fast because they have native content .but where as swing occupies very less memory and runs slow because they donot have native content

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Sunny Jain

• Feb 28th, 2007

Volatile Variable: Whenever a variable is declared as volatile, the thread accessing the variable have to reconcile its copy of variable with the master copy of that variable....Transient:We can decla...

JavaStudent

 Profile Answers by JavaStudent Questions by JavaStudent

• Feb 12th, 2007

Transient: The transient modifier applies to variables only and it is not stored as part of its object's Persistent state. These variables are not serialized. Transient instance fields are neither sav...

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Deepti Kajjam

• Feb 22nd, 2007

Overriding vs. OverloadingMethod overriding requires the same method signature (name and parameters) and the same return type. Only non-final instance methods in the superclass that are directly acces...

Antony Praveen Kumar

• Dec 1st, 2006

Method over loading : Compile time the compiler will decide which method to execute.(Example for compile time polymorphism)Method over ridding : At run time OS will decide which method to execute.(Example for Runtime polymorphism)

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