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JNDI -Java Naming and Directory Interface
What is the need of JNDI(Java Naming and Directory Interface) ? Explain with real-time usage ?
srinivasaraobora
- Aug 12th, 2006
Hi Friends ,The main advantage of JNDI(java naming and directory interface) is used for the searching the information in the huge amount data. if we have huge amount of data, for searching we use ...
prashant
- Jul 26th, 2006
Well JNDI is Universal Client API to organize and locate components in a distributed computing environment.
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If I am creating two objects for a same class then both the objects are not similar why?i,e A obj = new A(); A obj1 = new A();obj.equals(obj1) returns false why?
sachin.jain.mca
- Feb 26th, 2009
Equals method return on the basis of hashcode and if you do not override hashcode and equals method the by default hashcode return int value of object physically address in memory so as when you com...
Parthasarathi.M
- Oct 27th, 2006
In JDK5.0 equals() and == both are returns false.please try this example in JDK5.0public class EqualClass { /** Creates a new instance of EqualClass */ public EqualClass() { } pub...
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What is the right way of writing the code to get the servlet information using public String getServletInfo()?
mani.sivapuram
- Feb 23rd, 2011
By using the page directive as given below<%@ page info="hi this is the way
to write the code for getServletInfo() method" %>
mabhijit
- Jan 11th, 2008
Some applets and applications, for example, the Java Web Server Administration Tool, display information about a servlet. This information can include a short description of the purpose of the servlet...
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In Distributable environment,what happens if our component throws an exception(may be checked/unchecked) to others who r using our component. we must handle here itself or let it leave to others to handle? plz. reply soon
Mahesh Tpt
- Nov 5th, 2007
In exception handling, we should use throw clause to throw the exception because exceptions in java are throwable. If any method calls the throw clause, it(throw clause) will tell "If you call me, You...
VenkitaKrishnan
- Apr 4th, 2007
If your component throws an exception, in most cases we should not catch the exception, otherwise the calling component will never know that an exception has occured.What we should do is to force the ...
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Difference between forward and sendRedirect
What is difference between forward and sendRedirect
srinivasaraobora
- Oct 13th, 2006
Hi,The forward action allows the request to be forwarded to another resource (servlet/jsp/HTMl> which are available in the same web-application (context).Where as in the case of Response.sendRedire...
Rukmangada K J
- Oct 13th, 2006
In sendRedirect we can forward the request to the file in another context path but in case of forward() method it only invokes the file within the context path....
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What is the difference between EJB3.0(CMP) and Hibernate
kumarsamba
- Dec 5th, 2009
The basic difference is EJB needs an application Server for its implementation whereas Hibernate needs only a web server for its implementation.
krishna_ballabh
- Jul 31st, 2009
EJB3.0 does provide the POJO features for ORM in JPA as well as all features of older version, in other word we can say that Entity Bean is no longer in EJB, to provide the same, specification is prov...
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What is the difference between jdbc1.1 and jdbc1.2?
vineelbachu
- Dec 18th, 2006
hai iam vineel. i would like to tell what i know regarding this question.1)in jdbc 1.1 the cursor can be moved only in one direction i.e in forward direction where as in jdbc 1.2 t...
vineel
- Dec 18th, 2006
Hai, I am vineel. I would like to tell what i know regarding this question. 1) In JDBC 1.1 the cursor can be moved only in one direction i.e in forward direction where as in jdbc 1.2 the cursor ca...
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What is the difference between Servlet over CGI?
ramesh.sure
- Jun 26th, 2008
CGI creates a process for every request.Servlet creates a Thread for every request.
subhasish_25
- Jan 11th, 2007
in cgi , a process is createdfor every client request or call....it increases memory space...whereas in servlet 1 process is created and then a thread is call for every client request
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What is DAO?
amreenkhader
- Jan 20th, 2012
DAO decides to recieve the appropriate application from java and implemeting it a runtime...during execution..
chetan.nellekeri
- Apr 18th, 2011
DAO is Data Access Object.This is a pattern is used in most of the project throughout the industry.This class is the main medium between JAVA and JDBC.
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Application Security
How will you make sure to develop Java/J2EE projects/applications secured from hackers?Justify how Java projects are more secured than other languages?
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Cloning
What is Cloning? Why we are using Cloning concept? and How many types of cloning?
sivapurammani
- Jan 23rd, 2014
Cloning is used in some of the ares of the Web Projects. Consider one example we are trying insert some data into DB then what we will do is we are create one java object for that(See creating java ob...
surendar
- Jul 16th, 2012
Cloning is the process of creating duplicate copy with current object state. We use this concept in real world like, eg: In Bike manufacturing company, we use cloning for creating same bike object,...
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Is servlet is thread-safe?
PriyankN
- Mar 27th, 2011
Servlet is not thread safe, but that is because of the class/instance variables. So care must be taken to provide synchronized access to class/instance variables. Synchronizing entire service or doGet/doPost methods is bad and should be avoided.
Neha
- Nov 18th, 2007
Servlet is not thread safe by itself but u can make it thread safe by synchronizing the particular line's of service method.
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What is the difference between light weight component(like swing) and heavy weight component(like awt).
srinivasaraobora
- Aug 12th, 2006
Hi Friends,In java the componenets are light weightcomponents and heavy weight components .light weight componenets are the componenets which are used less resources and light weight components have h...
srinivasaraobora
- Jul 24th, 2006
Hi Friends,In java the componenets are light weightcomponents and heavy weight components .light weight componenets are the componenets which are used less resources and light weight components have h...
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What is the difference between jsp tag and html tag
sivapurammani
- Jan 23rd, 2014
JSPs are residing in server-side where as in general HTML are in client side. In clear way we can say in server side we need to write the code in java format or HTML and other formats too. So at the...
Prasad MN
- Dec 17th, 2012
Both the tags are used to developing the web pages. HTML tags are static. Where as JSP tags are dynamic.
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