Getting started on Java EE development
What IDE do you use and where can I learn to work with the Java EE platform? ...
java-ee
ejb timer service vs cron
Hi Ejb timer service can start some process in desired time intervals. Also we can do the same thing with cron (min 1 minute) interval. But doing it with cron we have more power on controlling, monitoring and changing the intervals. Also we can restart if needed the cron very easily by command line. Also we can add or remove lines i...
Which technologies does Tomcat support?
I read a lot about GlassFish application server that it supports the whole Java EE 6 specification. But which does Tomcat support? I know that Tomcat is a JSP/Servlet container, but I see articles in web about "JSF and Tomcat", "Hibernate and Tomcat" and many more. Can tomcat play with these technologies: EJB, JSF, JPA, Hibernate, Spri...
EJB injection in Glassfish webapp
I've got an app that is trying to use @EJB annotation to inject remote references to EJBs in my ejb.jar file. I'm getting inconsistent results. In one case, I have a listener in web.xml that gets called and apparently has the EJB injected correctly, since I can see it connecting to the EJB and calling methods on it. In another class (...
Best practice of parsing RESTful WebService response with Rails
Hi guys, I'm developing a JAX-RS application and it's working fine. Now, I want to develop a web service client application using Rails. And my question is which is the best way to parse a RESTful webservice's response in Rails? ...
I am unsure of how to access a persistence entity from a JSP page?
Hi, I am just learning Java EE, I have created a Persistence entity for a User object, which is stored in the database. I am now trying to create a JSP page that will allow a client to enter a new User object into the System. I am unsure of how the JSP page interacts with the User facade, the tutorials are confusing me a little. This i...
EJB client can't find a DataSource that tests successfully in WebLogic admin console
Disclaimer: I'm completely new to JEE/EJB and all that, so bear with me. I have a simple EJB that I can successfully deploy using JDeveloper 11g's integrated WebLogic server and a remote database connection (JDBC). I have a DataSource named "PGY2" defined in WebLogic, and I can test it successfully from the admin console. Here's the co...
JEE6 Tutorial samples not found
in this page of tutorial : http://java.sun.com/javaee/6/docs/tutorial/doc/bnadu.html discuss about hello2 application on samples folder. i download samples from this link and installed correctly: https://glassfish-samples.dev.java.net/servlets/ProjectDocumentList?folderID=5214&expandFolder=5214&folderID=0 but "hello2" folder ...
Install Java EE 6
I'm trying to install the Java Enterprise Edition 6 on my workstation. I downloaded the installer from the Sun website. Whenever I get to the option in the installer "JDK Selection" I'm told to manually select a JDK. I gave it my path (C:\IBM\rad7\jdk\), and was told it is invalid. What do I need to do to successfully install JEE6? ...
JSF 2.0: use Enum values for selectOneMenu
I'm using JSF 2.0 and want to fill a selectOneMenu with the values of my Enum. A simple example: // Sample Enum public enum Gender { MALE("Male"), FEMALE("Female"); private final String label; private Gender(String label) { this.label = label; } public String getLabel() { return this.label; } } Unfortunately, ...
Object Pooling managment algorithm.
Hi, Anyone can help me to write an algorithm for object pooling. I am very new in J2EE and i need object pooling for database connection. So please help out. Thanks ...
Efficiently fill resultset in object model
Hi, I have an object model whose structure is Dashboard List of panels List of containers List of widgets If i get whole dashboard, with panels + containers + widgets, from Database then multiple I/O requires I want to get it in one I/O .For this i prepared a query which gives me this resultset. DA...
Example non-trivial JEE web service implementation?
My organisation is considering switching from an in-house proprietary application server (and adhoc protocols) to a JEE5 / JEE6 framework + web services for new development, and we're trying to get our heads around how we'd do that. We're experiencing something of a culture shock; we're comfortable with emacs/vi, command-line tools, she...
JPA @version - can it be used to calcualate version of a table entry
Hi, Please consider the following table (created using a corresponding entity) request ------- id requestor type version items 1 a t1 1 5 2 a t1 2 3 3 b t1 1 2 4 a t2 1 4 5 a t1 3 9 The above is what I want to achieve. The version field is a c...
Help with ejb 3, weblogic and spring.
So,hi there. I've created a simple EJB3 test project, the code is simple: @Stateless @Remote( { ISumaSimple.class }) public class SumaSimpleBean implements ISumaSimple { /** * Default constructor. */ public SumaSimpleBean() { // TODO Auto-generated constructor stub } @Override public int sumar(in...
install GlassFish on VPS
hi i want install GlassFish into the VPS.now i need tutorial for installing GlassFish on VPS [Linux OS] and configure it.also how can i point separated domains to separated Web applications on Enterprise Server ? thanks ...
Servlet 3.0 logout doesn't work
I've got a problem with the authentication features of Servlet 3.0: With this code in a Servlet v3: log.info(""+request.getUserPrincipal()); log.info(""+request.getAuthType()); log.info("===^==="); request.logout() ; log.info(""+request.getUserPrincipal()); log.info(""+request.getAuthType()); request.authenticate(response) ; log.in...
Create Hello World with RESTful web service and Jersey
I follow tutorial here on how to create web service using RESTful web service and Jersey and I get kind of stuck. The code is from HelloWorld3 in the tutorial I linked above. Here is the code. I use Netbean6.8 + glassfish v3 RESTGreeting.java create using JAXB. This class represents the HTML message in Java package com.sun.rest; im...
Get Ajax4JSF (a4j component) running on Glassfish
I'm trying to build an JEE6-application on Glassfish V3, using JSF 2.0, Weld, JPA2 and Maven. Now i'm having trouble getting a simple <a4j:support> running. This is the fragment of my little example. When typing something into the inputtext, the outputtext should automatically be updated. But nothing happens (not in Firefox, not in IE8)...
Servlet.init() and Filter.init() call sequence
In which order are Servlet.init() and Filter.init() methods called in java web application? Which one is called first? Are all Servlet.init() methods called before than any Filter.doFilter method? ...