I have a J2EE webapp which is used to upload a file which is then processed by a database procedure. Because we do not want the webapp to have to wait until the database procedure completes, it is executed in a different thread. The process running in the separate thread needs to obtain and close its own connection. The webapps usually...
I would have thought that there is a lot of information out there on this, but I haven't found anything that really answers my question. What are the advantages of making an EJB rather than a web service? The only clear advantage I can come up with is performance. Even so, I can't find any hard data on how much more efficient EJBs are. ...
Hello! I'm facing some of the problem some of you already talked about and sorry to bring this out again. It's just like I still don't get certain aspect of hibernate. I'm using maven2, hibernate 3.2.5 ga, spring 2.6.5 SEC01, hsqldb 1.8.0.10, netbeans 6.7.1. I'm bulding a user and contat management and I've managed to get a working "m...
we need run one function periodically in Java web application . How to call function of some class periodically ? Is there any way that call function when some event occured like high load in server and so on . what is crontab ? Is that work periodically ? ...
We are currently searching for a java framework , that made validation easily on server side and both client side,Spring,Hibernate,Play are the framework choices that we are searching,we are using annotation based development and this framework will determine our javascript choice too.Which is better framework (architecturally) at valida...
Hello good people! I've been trying for the this whole a query who is officially giving me nightmares. The system is a user and contact management. So I have UserAccount, Contact and Phone. UserAccount has a bidirectional one-to-many relationship with Contact and an unidirectional one on phone all mapped by a Set: //UserAccount ma...
Hi, I am currently developing a J2EE application and I would like to use Jetty. I would like to have iot integrated with Eclipse, so I could debug the appliaction. I've tried out couple of plugins (including WTP) but nothing works well enough. Run Jetty Run plugin is the best, but I cannot specify context-root in it, which makes it un...
Developers who have used eclipse cannot miss out the Cntrl+Shift+G combo - the easiest way to find all references to a particular member/method/class in your workspace. Consider a scenario where you are a new guy maintaining a web application written in java. Now, you are about to change a method signature, and you do a Cntl+Shift+G to ...
I have a method : private String getProperty(String property) throws IOException,ConfigException{ //first test if the config file exists. String propertyFile = "DataTransfer/Config/DataTransfer.properties"; if(!new File(propertyFile).exists()){ throw new ConfigException("the config file doesn't exist." + " Make sure the file...
I'm working on an intranet-only web application (J2EE) that requires some basic security features. There will be relatively few authorized users for the site, but I still need to implement some sort of secure session. The basic flow I'm looking at is visit site => log in => use site => log out when done (or automatically log out when th...
In my struts.xml file, I have: <action name="preregister"> <result>/WEB-INF/views/user/register.jsp</result> </action> <action name="register" class="com.dentlak.user.RegisterAction"> <result name="input">/WEB-INF/views/user/register.jsp</result> <result name="success">/WEB-INF/views/user/email-verification-needed.jsp</resu...
How do I know what file reference to use to get a file from my WAR. The structure of the WAR is: WAR src - model - web build WebContent META-INF WEB-INF LIB The JSPs are under WebContent, I have put the config.txt file under the WebContent folder and tried to get to it with Buffered...
Hai guys, I want to know how a smartcard application can be done using j2ee..... ...
I am working on a solution that aims at solving problems that newbie programmers experience when they are "modifying code" while bug fixing / doing change requests, on code in production. Eclipse, as we all know is a great IDE. Features such as Code Completion, Open Declaration, Type Hierarchy, Package Explorer, Navigator, Finding Refere...
Hello good people! i've hit a block once again with hibernate.I've posted numerous times on different aspects of the user and contact management that i've been building. The sad thing is that i didn't really have the time to play with it and understand it better before actually starting working with it. Sorry but English is not my ...
I'm looking for a JBoss MQ tutorial (on JBoss Tools) so that I can write an MDB and a client. I can find only JBoss Messaging. ...
is there a tool that tells me redundant keys and values that are there in my one or many properties file. ...
i have two tomcat servers that communicate between them. upon an error at one of the servers i would like to send an error response to the other server. i am sending the error using: resp.sendError(HttpServletResponse.SC_BAD_REQUEST, e.getMessage()); i am catching the response with org.apache.commons.httpclient.httpMethod. my questio...
I'm trying to call send a message to a JBoss MQ queue but it seems the queue is not bounded. I use the following code to send the message : Properties properties = new Properties(); properties.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory"); properties.put(Context.URL_PKG_PREFIXES, "org.jnp.interfaces");...
Today one person told to me that "J2EE programmers do not write to files". Why can I not write to files from within a J2EE container (for example from JBoss)? What is wrong? ...