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Pass Argument through Hyperlink
How can we pass argument through hyper link in J2EE?
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Stop Finally statement
How can we stop finally method to execute?
banduskank
- Jun 30th, 2008
you can put System.exit(1) in try block to terminate the bolck. this will prevent excuting finally statement.egtry { ...
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How many ways to get the instance of classI know 3 ways1)using new operator2)class.forName()3)getInstance()is there any outher ways?
ramesh.sure
- Jun 26th, 2008
There are four ways to create a instance of a class 1. using new operator2. using newInstance3.using Factory()4.cloning.
freedeus
- Feb 14th, 2007
First of all, Class.forName(String className) is not actually a way to instantiate a class. It is a way to load a class and return the particular "Class" object associated with the loaded class. In f...
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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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1. what is throwable and where should we use this? 2. How can you increase the JVM memory? 3. Abstract class is a partially implemented class so, How can we call an abstract method without creating... 4. How to Stop the creation of objects(For ex:For Player class of Cricket Team,stop instance creation after... 5. Can HashMap store null values?If yes, how many and in which one? 6. What is the Difference between Runtime and RunTime java API's? 7. How we upload and download files in JSP and Servlets ,What methods we are using?? 8. Why return type is not a part of method signature? 9. what is the difference between String and StringBuffer? 10. Can we create a class in a method if it is possible how
ramesh.sure
- Jun 26th, 2008
String is Immutable where as StringBuffer is Mutable.Mutable: The objects whose contents can be modified is called as Mutable.Ex: U can try this.String myString = new String( "old String" ); System.ou...
subhasish_25
- Jan 11th, 2007
Throwable class is the superclass of all errors and exceptions in the Java language.Instances of two subclasses, Error and Exception are conventionally used to indicate that exceptional si...
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What are tokens in Java?
How and Where do we use them in an application. Give an example.
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
- 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'.
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Java Helper Class and Session Facade
What is helper class? What is session facade?
amitkumarpadhy
- Jun 13th, 2008
Java Helper class is one that your class under consideration delegates the work to be done to . Example. Consider an n tier application where Struts is the presentation layer . Now generally the ...
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API
What is an API
amitkumarpadhy
- Jun 13th, 2008
API stands for Application Programming Interface. In a much broader sense it is something like a source code library that supports the request made by a pragram coded by you.e.g J2SE api , J2ee api
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Run more than one application in WebSphere
How can we run more than one web application in a Websphere application server?
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When we write JavaScript Code in the JSP Page from where the Java Script code will be executed by the Container
naveen.bj7
- May 9th, 2008
Whenever request for that jsp is sent thru URL of the available browser then the javascript code in the tags will be execute
srinivas.g
- Jul 25th, 2006
Actually we need validation first of all. if we done serverside validation ,it sholudbe checked at serverside.but it will increase the network traffic.so that's why we need java script which is used to validate the given data at clientside before submitting to server.
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Even though tomcat is installed properly, when we send a request for an existing servlet from the internet explorer to the tomcat server, the browser is displaying the requested resourse is not available. What to do? Please reply if you know
mikessun
- May 8th, 2008
Most likely you did not define the servlet mapping correctly. in web.xml file, you define following:....?name_of_servlet com.somepackage.TestServlet.... name_of_a_servlet /test_url_pat...
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What are the Lazy Property, Lazy Collection in Hibernate
mikessun
- May 8th, 2008
Lazy property in hibernate is used to control when child/ren class(es) should be loaded, e.g., when a parent class is loaded and lazy property is true, the child entity is not loaded until an explicit call getChild() is invoked
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Hi iam new to springs ,can u explain what are the advantages of springs?
mikessun
- May 8th, 2008
Spring is an IoC based framework. IoC refers to Inversion of Control, meaning that one object using 2nd object to provide certain capability. Advantages:* simplify coding via POJO programming and fram...
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What is the problem in getting the session object of hibernate directly in the action class of struts?
mikessun
- May 7th, 2008
Most likely the hibernate config file is not located corrected; the default should be under WEB-INF/classes/yourConfigFile
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How do servlets belonging to two apps communicate
mikessun
- May 7th, 2008
You can use response.sendRedirect(someURL) to redirect to another servlet in another application. But you will lose your session since a session is tied with a web context while you are redirecting to another web context.
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What is difference between HTML comment and jsp comment
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What is the difference between apache webserver and tomcat webserver?
raman36127
- May 5th, 2008
Apache is an HTTP server written in C that can be compiled and run on many platforms. See http://www.apache.org Java WebServer is an HTTP server from Sun written in Java that also supports Servlets...
varsha
- Nov 2nd, 2006
Apache is a web server (mainly support static html). Tomcat is a servlet container (mainly support servlets).Apache is what your browser connects to, tomcat is what apache connectsto to ask for servle...
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How connection pooling works in JDBC?
gerald.amalraj
- Feb 21st, 2008
This connection pool maintains a hashtable which contains connection objects as keys and boolean value as stored values(i.e. Boolean value indicates whether a connection is in use or not)for your info...
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How do you redirect in JSP and in Struts?
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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WEB.XML
If more than one welcome-file, which one execute first? If first will run, what about second?
hemasundar
- Jan 2nd, 2008
If more than one welcome-file is there in welcome-files list, the first file in that list will be the welcome-file and the second one will not be executed.If the first file is not available, second one will considered , aif not third,nd so on.
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