satya

• Jul 24th, 2007

Front controller pattern. Famous examples Struts and JSF.

padmalatha

• Jul 5th, 2007

DAO is mostly used design pattern in projects.

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mabhijit

 Profile Answers by mabhijit Questions by mabhijit

• Jan 11th, 2008

There are two ways to redirect a request from JSP. They are1). response.sendRedirect("Path");2). requestDispatcher.forward("path");Now the difference b/t these two are :-1).sendRed...

nirajthacker

• Sep 26th, 2007

If you use response.sendRedirect("path") you will lose your request object. Use requestDispatcher.forward("path") to retain your request object.

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mani.sivapuram

 Profile Answers by mani.sivapuram Questions by mani.sivapuram

• Feb 10th, 2011

Action classes are like controllers in MVC architectures.Since when we send the request to server then action class is going to do the operation like it take the data from request object and send it to service layer according to required operation.

mabhijit

 Profile Answers by mabhijit Questions by mabhijit

• Jan 11th, 2008

The action classes are the link between the Struts framework and your business application logic. The fact that the main method in the action class is called "perform" indicates that the act...

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What are the properties of a Java Bean?

Ashish Gupta

• Jan 20th, 2018

Private modifier, getters & setters are public.

Sanjay Makawana

 Profile Answers by Sanjay Makawana Questions by Sanjay Makawana

• May 11th, 2015

Index properties
bound properties
simple properties
boolean properties

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In HttpServlet class there is no any abstract method although javasoft declared this class as an abstract
class.Ok,this is valid in java.So if we want to utilize this class we will have to extends this class.But we can use to achieve this one by using Httpservlet class as simple java class also.

Ganesh Bhat

• Apr 3rd, 2015

The interface of HttpServlet is complete, but not the implementation/functionality of it. abstract restricts a developer to use the HttpServlet as is, rather it forces the developer to extend it and p...

Sandhya.Kishan

 Profile Answers by Sandhya.Kishan Questions by Sandhya.Kishan

• Jul 4th, 2012

Java soft has declared httpservlet class as an abstract class for its performance, scalability and reusability issues and for security purpose.

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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...

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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...

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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...

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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.

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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

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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);

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Sony V George

• Apr 4th, 2007

We are mainly using the design patters for the sepration of physical speration rather than an logical sepration. We can say like BusinessDelegaors, Singleton, session-Facade, DAO(Data Acess Object), s...

padma

• May 18th, 2006

HI, Designpatterns are mainly used for reoccuring solns for a given problemwe had Frontcontroller ,SessionFacade,viewhelper,valueobject (DTO)and DataAcessObject(DAO) designpatterns .

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sreenivasgowd

 Profile Answers by sreenivasgowd Questions by sreenivasgowd

• Sep 5th, 2009

An interface does not contain any methods and giving the chance to programres for creating of their own logic in their own methods.Examples:java.io.Serializablejava.lang.Cronablejava.rmi.Remote

Buddhadev Dasgupta

• Jan 19th, 2006

Marker interface are also know as tag interface.Marker interface don't have any method,this interface are used as tag only.for example suppose we have some product from different country , and every p...

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1

sreenivasgowd

 Profile Answers by sreenivasgowd Questions by sreenivasgowd

• Sep 5th, 2009

In every Java program two threads will be activated.One is foreground thread (used for program execution).Second is background thread that is garbage collector.

ajitamitavdas

 Profile Answers by ajitamitavdas Questions by ajitamitavdas

• Dec 14th, 2005

By default java has only one thread ie main but we can create any child thread from that main thread.

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radhikayalam

• Jul 29th, 2007

Hibernate is used to intract with the database easily and the user need not learn SQL Querys.JDBC also intracts with database but user can should have knowledge of SQL?

ramarao g.v

• Nov 3rd, 2006

I prefer EntityBeans..As there is lot more support from JPA(Java Persistence API) ...

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Praveen Rastogi

• Jun 22nd, 2006

Thanks shekher

sekhar

• Apr 27th, 2006

we can call a jsp page that is presnt in web-inf.we can call a jsp page like a servlet.for that we have to configure web.xml like this.<jsp><jsp-name>name<jsp-name><jsp-class>s...

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prashant

• Jul 26th, 2006

to check wheather it is SLSB/SFSB  u can see dd(deployment descriptor).This is the only place where container checks for it.

Alps

• May 18th, 2006

In ejb-jar.xml, in <session-type> tag, you specify if it is Stateless or Stateful

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Explain about MVC 1 & MVC 2. what is the difference between MVC 1 & MVC 2?

gururaj

• Jun 13th, 2006

actually MVC 1 is a misnomer. is also called Model 1 architecture, this refersto the ancient archetecture :) wer ppl had vereything stuffed into servlet ( view and business logic related code ) and a ...

visitor

• May 4th, 2006

If u dont mind pls explain me in detail

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Explain about DOM & SAX parsers with real-time example of usage

Chandan Reddy

• May 16th, 2007

DOM:-Its Object Driven parser-Creates copy of XML document in Tree format, good for Large sized XMLs but very memory consuming for Large sized XMLs (think about XMLs which has 2GB or more size)-M...

Subhash Thakur

• Aug 10th, 2006

Nice Eshwar,thats true :-) but personally i feel SAX makes many good advantages over DOM when it comes to reading and have a custom validation on XML documents. Isn't it ?regards,Subhash

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keerthana

• Oct 24th, 2007

Map myThreadSafeMap = Collections.synchronizedMap( new HashMap() );

phanikumar26in

 Profile Answers by phanikumar26in Questions by phanikumar26in

• Jun 17th, 2006

Iam not quite getting the wordings like "course-grained & fine-grained"  while going thru some EJB article...can anybody explain what exactly its meant for

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