rhingarajiya

 Profile Answers by rhingarajiya Questions by rhingarajiya

• Mar 6th, 2009

ForName is static method of final Java.lang.Class Class.This method returns the object associated with the class or interface with the given string name. Example:public static Class forName(String classname)It returns classname class object.

jhansi012

 Profile Answers by jhansi012 Questions by jhansi012

• Mar 5th, 2009

It initializes the class with specified name in the argument.

Answer Question  Select Best Answer

mani.sivapuram

 Profile Answers by mani.sivapuram Questions by mani.sivapuram

• Feb 10th, 2011

When an object is created using new operator then JVM creates object and place that object in heap memory. and stack area is used to store object referances and methods and variables.

mmptce

• Sep 25th, 2007

Heap memory is allocated for the objects and the instance variables that are created by using new operator.Stack memory is for the method call and thread call.

Answer Question  Select Best Answer

What is Weak Object References?

bkishore2k1

 Profile Answers by bkishore2k1 Questions by bkishore2k1

• Mar 12th, 2009

A weak reference is one that does not prevent the referenced object from being garbage collected. You might use them to manage a HashMap to look up a cache of objects. A weak reference is a referenc...

suresh_kumar36

 Profile Answers by suresh_kumar36 Questions by suresh_kumar36

• Mar 11th, 2009

Weak reference objects are those which do not prevent their references from being made finalizable, finalized, and then reclaimed by garbage collection. This means that the object referred to by the w...

Answer Question  Select Best Answer

How and Where do we use them in an application. Give an example.

gaanbd

 Profile Answers by gaanbd Questions by gaanbd

• Jun 18th, 2008

Java Tokens are used in struts. when a form is refreshed the value gets submitted twice results in duplicate form submission. To avoid this each page is given a identity called token one can save toke...

Sonthosh

 Profile Answers by Sonthosh Questions by Sonthosh

• Jun 7th, 2008

Tokens in java means the string tokens generated by the string tokenizer based on the delimiters used. For example, if the phrase "hello world" is tokenized based on delimiter ' ', it will return two tokens namely 'hello' and 'world'.

Answer Question  Select Best Answer

How many THREAD PRIORITY LEVELS levels are there in JAVA
3810 1224

Sandhya.Kishan

 Profile Answers by Sandhya.Kishan Questions by Sandhya.Kishan

• Jul 4th, 2012

The priority of thread can be max,norm and min depending on the underlying os or JMV.

almas_23

 Profile Answers by almas_23 Questions by almas_23

• Aug 18th, 2008

The thread priority levels in terms of integer range from 1 to 10For max, min & medium priority we have the following:MAX_PRIORITY  (value=10)NORM_PRIORITY  (value=5)MIN_PRIORITY  (value=0)

Answer Question  Select Best Answer

You are the new WebSphere Administrator for a company, and you are asked to migrate an existing application to an alternate environment. This application is managed by the Corporate Services group and is mission critical, there is very little documentation for this application. Describe all of the steps you would use to deploy this application.

esaiesai

 Profile Answers by esaiesai Questions by esaiesai

• Apr 27th, 2010

Identify the targeted environment's platform.If the targeted env has a different versions of the needed technology (for eg. different or newer versions of JDK, database, deployment paths for stati...

KamleshYadav

 Profile Answers by KamleshYadav Questions by KamleshYadav

• May 27th, 2009

For deployment of an application we need to have WAR & then EAR files generated.1) First we need to generate a war file..2) Secondly, using that war file we need to generate EAR File, which is finally deployable.3) Deploy on the ServerThats it!

Answer Question  Select Best Answer

Explain the purpose of Marker Interface.When there is no methods in marker interface then what is the use of implementing it?

Read Best Answer

Editorial / Best Answer

jasmin sheeba rani  

 Profile Answers by jasmin sheeba rani Questions by jasmin sheeba rani

• Member Since Oct-2009 | Oct 6th, 2009

---

Marker interfaces are also called "tag" interfaces since they tag all the derived classes into a category based on their purpose. For example, all classes that implement the Cloneable interface can be cloned (i.e., the clone() method can be called on them). The Java compiler checks to make sure that if the clone() method is called on a class and the class implements the Cloneable interface.

jasmin sheeba rani

 Profile Answers by jasmin sheeba rani Questions by jasmin sheeba rani

• Oct 6th, 2009

Marker interfaces are also called "tag" interfaces since they tag all the derived classes into a category based on their purpose. For example, all classes that implement the Cloneable interf...

VijayAravind

 Profile Answers by VijayAravind Questions by VijayAravind

• Sep 18th, 2009

Marker Interface is a Java interface which doesnt have any methods in it. Marker Interfaces are Serializable, clonable, Singlethreaded model, Event listener. Marker interfaces are implemented by the class or its super class inorder to add some functionality.

Improve Answer

How can we implement Singleton Design pattern in multiple JVM environment? How we will make sure to be an object in multiple JVM?

Rajesh Kumar

• Apr 10th, 2017

Not sure about the tool, but if we have to do it, then we can use some clustered cache( jboss cache) and save the singleton instance in it. In your singleton code, always check for the instance in t...

tester

• Mar 29th, 2012

You cannot do that.

Answer Question  Select Best Answer

How can one class can pass message or inform other class that some event has happened, without using thread?

TRAORE

• May 14th, 2017

By using Java built in observer design patern

Shanu Shine

• Oct 10th, 2014

Use Observer design pattern

Answer Question  Select Best Answer

elanchezhian

• Jun 11th, 2012

By using Cookies

mani.sivapuram

 Profile Answers by mani.sivapuram Questions by mani.sivapuram

• Feb 14th, 2011

since sessions are created by server only but by using session with cookies (or) session with url encoding techniques we set the session id in the client system.If we want to maintain secure data abou...

Answer Question  Select Best Answer

• Jan 28th, 2018

Implement OWASP security standards.
Provide Token implementation,
Direct URL interceptor,
Antisamy etc.

Roni

• Oct 4th, 2012

Security roles can be applied at application level by either declarative method or programatically. Users or Groups are binded during application deployment by administrator.

Answer Question  Select Best Answer

Why thread has created in Two ways and why not in one way or three ways? Anyone please help me to get the Answer

ashis

• Aug 6th, 2013

When one class already extend by another then we can not extend thread class,but we can implement interface.Interface is used for multiple inheritance and also for factory design patten,that will help to create the thread .

mikhailguzman

 Profile Answers by mikhailguzman Questions by mikhailguzman

• Mar 19th, 2013

Creating thread is basically instantiate the Thread class. There are two ways to instantiate class: with extend or implementation of interface.

Answer Question  Select Best Answer

janbaskittraining

 Profile Answers by janbaskittraining Questions by janbaskittraining

• Mar 11th, 2016

What exactly does a Java developer do? On a typical day, you would be doing one or a few of the following tasks that are part of the Software Development Life Cycle (SDLC): Gather requirements. ...

Sukhrob

 Profile Answers by Sukhrob Questions by Sukhrob

• Dec 24th, 2015

Java Developers, the ones who create different programs using Java Prog. Language.

Answer Question  Select Best Answer

What is the difference between Abstract Factory Pattern and factory Pattern? When would you use each of them?

mani.sivapuram

 Profile Answers by mani.sivapuram Questions by mani.sivapuram

• Feb 23rd, 2011

Abstract factory pattern is same as like factory pattern but in abstract factory pattern we? prepare a base class as abstract and we provide the implementation classes to the base class. In the clie...

rkj2ee2005

 Profile Answers by rkj2ee2005 Questions by rkj2ee2005

• Mar 19th, 2006

Abstract factory pattern is typically used for giving implementation to specification (eg., jdbc, servlet specifications etc...). Factory pattern is used when you want to defer object creation to lat...

Answer Question  Select Best Answer

subba reddy

• Oct 12th, 2006

hai , if  u sent the answer with that suggestion,it may be usefull for viewers. 

Akshay

• May 19th, 2006

hi there,this is in reference to ur answer u posted on geekinterview .com.i think u need to check ur posting once again so that the ppl who are comletely new to this technology are not misguided.i don...

Answer Question  Select Best Answer

Suppose there are 2500 records to be handled? How Data Access Object (DAO) class will handle it?

mani.sivapuram

 Profile Answers by mani.sivapuram Questions by mani.sivapuram

• Feb 14th, 2011

When we send the data from front end like JSP or HTML etc then the controller is going to take the data and send it to service layer the service layer takes that data and send it to DAO layer in DAO l...

phdsong

 Profile Answers by phdsong Questions by phdsong

• Aug 26th, 2008

DAO is one of design patterns. The Data Access Object (or DAO) pattern: 1. Separates a data resource's client interface from its data access mechanisms, 2. adapts a specific data res...

Answer Question  Select Best Answer

RaghuVeera

• Feb 13th, 2007

For developing larger applications, we have to use IDE's like Eclipse, JBuilder etc. We have various advantages by using Eclipse. (1) It will generate some code automatical...

Sangram

• Jul 13th, 2006

Eclipse is IDE of coursebut it is also full featured platform for Java Developement Also many other languages are also supported and good plugins supportPlugins for anything from embedded systems to  web  developement are available for eclipse.

Answer Question  Select Best Answer

pankaj

• Aug 16th, 2006

There are three kinds of Java variables:Local variables are declared in a method, constructor, or block. When a method is entered, an area is pushed onto the call stack. This area contains slots for e...

santi

 Profile Answers by santi Questions by santi

• Aug 1st, 2006

local variable is a variable declared inside a method whereas instance variable is  declared at classlevel. if wrong plz advice

Answer Question  Select Best Answer

Ajaykumar.sr

• Dec 30th, 2006

Calendar cal = Calendar.getInstance();int mon = cal.get(Calendar.MONTH);int day = cal.get(Calendar.DAY_OF_MONTH);int year = cal.get(Calendar.YEAR);System.out.println(day + " / " + mon + "/" year);

Praveen

• Oct 17th, 2006

Java.util.Date date=new java.util.Date();System.out.println("Date formate of "+date);

Answer Question  Select Best Answer

The complier thinks that the businness exception is a Runtime exception , It just bypasses without any error message.

krishna_ballabh

 Profile Answers by krishna_ballabh Questions by krishna_ballabh

• Jul 31st, 2009

Extending the Runtime Exception means you are giving the definition of your exception as System Exception, for each System Exception your container will do a different process, mean what ever transact...

hr1551

 Profile Answers by hr1551 Questions by hr1551

• Jul 10th, 2007

It is not recommanded because business exception should be caught in compile time instead of run time.

Answer Question  Select Best Answer