javagek

 Profile Answers by javagek Questions by javagek

• Aug 27th, 2011

Java.util.concurrent.* package is available in JDK 1.5.

phanibhushan.g

 Profile Answers by phanibhushan.g Questions by phanibhushan.g

• Apr 6th, 2010

Two ways of implementing your own thread pool. a. Using the java.util.concurrent.Executors class which contains the static methods newFixedThreadPool(), newCachedThreadPool() etc for creating thread p...

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Rushi

 Profile Answers by Rushi Questions by Rushi

• Apr 21st, 2009

HTTP is a stateless protocol so, for maitaining the session there are three session tracking technices1. Cookies 2. URL rewriting3. Hidden Form fields

vijaysdange

• Mar 25th, 2006

 use session varaible accross application             String vijay=request.getParameter("vijay");      &n...

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Sam

• Aug 13th, 2007

Reflection - Dynamic Introspection of class(In other words : Dynamically discover a class, load it, create instance, explore all methods & fields of the class and finally invoke the class.)Eg:File...

Hari

• Jul 21st, 2005

Reflection is the process of introspecting the features and state of a class at runtime and dynamically manipluate at run time.This is supported using Reflection API with built-in classes like Class,Method,Fields,Constructors,etc.,

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jayateerth

• Jun 15th, 2007

A phantom reference lets you do final touch up closing on an object, even after it has been declared dead — no longer referenced by any live object.During garbage collection, these reference obj...

simi

• Oct 5th, 2005

Phantom memory is false memory.Memory that does not exist in reality.

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reddyonlinenow

 Profile Answers by reddyonlinenow Questions by reddyonlinenow

• May 19th, 2007

We can create object in different ways1.new operator2.class.forName3.newInstance4.object.clone

anshuman chhotaray

• Nov 2nd, 2005

To create object without using new keyword isclassname obj=(cast class)Class.forName("class name").newInstance();Anshuamn/ orissa / ndia

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catchsumang

 Profile Answers by catchsumang Questions by catchsumang

• Dec 27th, 2005

When ur passing serialized array are any data through the network, they pass in the form of objects to provide security.....so when objects are passed they are passed by references....but implicitly by values ..so they are passed by REFERENCES.

Dileep

• Oct 21st, 2005

Java has only pass by value associated with it. Even when an Object is passed the value of Object reference in the Stack is passed(not the actual Object in Heap) But since the value passed in is a ref...

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uncer

 Profile Answers by uncer Questions by uncer

• Jan 15th, 2010

A Private Protected Methods can be overloaded but in the concept of overriding access modifier should not be restrictedmean:If a method in superclass is public then overrided method in subclass must b...

Sarje

 Profile Answers by Sarje Questions by Sarje

• Aug 12th, 2009

Private protected methods can be overloaded and overrided. But while overrding method following rules must be satisfied We can not narrow the accessibility but can be widen. Means if the access specif...

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sampra

 Profile Answers by sampra Questions by sampra

• Feb 15th, 2008

1.By implementing Runnable interface  2.By Extends Thread class

sujatham

 Profile Answers by sujatham Questions by sujatham

• Aug 10th, 2007

Runnable interface.

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vinaymudgil007

 Profile Answers by vinaymudgil007 Questions by vinaymudgil007

• Jun 3rd, 2008

Here is a code snippet that will create maximum of two objects.*******************************************************************//This is a class that will create maximum of two objects for itself.c...

naveen.jayaram

 Profile Answers by naveen.jayaram Questions by naveen.jayaram

• Sep 30th, 2005

by keepineg count of number of objectsfor examplepublic class ThreeObject{ private ThreeObject() { // no code req'd } public static ThreeObject getThreeObject() { int count;...

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maddy_me

 Profile Answers by maddy_me Questions by maddy_me

• Sep 22nd, 2009

we can write our own exceptions by extending them either from Throwable or from Exception.class Example1{    public static void main(String[] args) throws MyException {   ...

d

• Mar 9th, 2006

To write our own Exception class1)Our class must be subclass of Throwable or Exception class2)Evert Exception class provide 2 constructors   a) no arguments    b) one argument i.e String  argument3) Optional: Overidding toString metod of java.lang.Object

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Give the answer

Sarje

 Profile Answers by Sarje Questions by Sarje

• Aug 19th, 2009

Class : A class is category of the object (any real entity) and acts as blueprint to create such object.For example if you want to develop an application for any company then its employee will be yo...

priya

• Dec 25th, 2005

Class : A class is a user defined data type with set of data members & member functionsObject : An Object is an instance of a classReference : A reference is just like a pointer pointing to an objectInstance :This represents the values of data members of a class at  a particular time

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I dont know can any body give it me

pavani

• Nov 18th, 2005

By using ejb, we are seperating the business logic. This is used when we have distributed environment where the client can access the remote object as if it were in the same local machine.

samyukta

• Nov 15th, 2005

Ejb is a 3-tire architecture (client,server,database).servlet  is simple client server architecture i.e 2-tire.

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Joseph Kiernan

• Jul 27th, 2006

The default buffer size is not specified for any buffered class and can vary between implementations. All that the Javadoc says is 'The default is large enough for most purposes.' I could tell you wha...

sahu

 Profile Answers by sahu Questions by sahu

• Jan 27th, 2006

ans:default buffersize 512 bytes

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sampra

 Profile Answers by sampra Questions by sampra

• Feb 22nd, 2008

Yes we can

sujatham

 Profile Answers by sujatham Questions by sujatham

• Aug 10th, 2007

Yes.We can limit the initial capacity of a Vector.

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sbarik

 Profile Answers by sbarik Questions by sbarik

• Apr 19th, 2006

If U want to perserve data integrity Make those methods or code blocks also synchronized..Basically its a programming issue .It depends entirely on the progarmmer which resources to synchronize 

hmashruf

 Profile Answers by hmashruf Questions by hmashruf

• Apr 18th, 2006

Agreed that for a synchronized block to get accessed to, the thread has to acquire object lock. With the above condition:a. Thread2 cannot access the synch. block until Thread1 is out of it.b. Thread2...

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satya

• Aug 3rd, 2006

Thanks shiva for u r answer but concept of runtime is jvm checks the obj reference at runtime which class is instantiated to the obj it will be a super hierarchy i got it and thanks further

chaitanya

• Aug 2nd, 2006

This is good example program

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cntganesh

 Profile Answers by cntganesh Questions by cntganesh

• Aug 31st, 2006

Java is case sensitive.if you change main to Main program will compile.while running using java in command prompt its shows errorException in thread "main" java.lang.NoSuchMethodError: mainmain() is a...

rabbi

 Profile Answers by rabbi Questions by rabbi

• Jun 29th, 2006

Main() and Main() are two different methods in Java. But if u write Main() instead of main() then there will no exception at the compile time. But It will generate a runtime exception :     java.lang.NoSuchMethodError: main    

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shirisha49

 Profile Answers by shirisha49 Questions by shirisha49

• May 31st, 2006

Hi there, The code enclosed in finally block is a must-execute code. Whether an exception is raised or not it doesn't matter. If finally code block is embedded after an exception-handling block then the control must pass to finally block either after try-catch or no try-catch.Shirisha K.

shubha

• May 25th, 2006

hi,2.finally block can be used to handle any exception generated within a try block.it may be added immediately after the try block or after the last catch block.when a finally block is defined,this is guranteed to execute,regardless of whether or not an exception is thrown.tq

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deepuji

 Profile Answers by deepuji Questions by deepuji

• Dec 20th, 2008

process of restoring the objects by using the process .

jay

• Sep 23rd, 2006

Externalization is a more advanced alternative to serialization.Basically, externalization gives you more control over serializating stream than default serialization (as by implementing Serializable ...

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veera

• Dec 21st, 2006

pointers are used to locate the address in computer's memory. In c/c++ we can know the address of any variable. But in java pointers are used internally by JVM which the user cannot know.

deepak gupta

• Sep 17th, 2006

Pointers r used 2 point the adress of any data i f we have address of any data then we can find any data and hack this data but java is secure bcause of thisit is also truth that without pointer java can noy work but it is not for user for implementing and to break the security

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