Java Enterprise Edition (JavaEE) is a platform for enterprise computing for Java.

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1answer
60 views

Withdrawal and bank balance in banking system [on hold]

I am making an online banking system(codes can be provided if necessary), my problem is with getting the balance of an account and withdrawal. How can i design this into the system, I can allow the ...
1
vote
1answer
91 views

How can I find what Resources a Java EE container provides?

How can I find what "Resources" a Java EE container provides? Can I discover this programmatically, or is there documentation I should refer to? (Note that the Java EE tutorial is vague on this ...
0
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0answers
29 views

handling external events in a cluster environment

I have an app written with JSF and Spring using JPA+Hibernate which is running on a Glassfish4 server. Right now I have an Observer pattern which is listening for some Postgresql events. Let`s say ...
0
votes
1answer
362 views

Spring web application deployment infrastructure

I'm interested in hearing out what's out there in terms of tips and tricks on deploying and maintaining a Java web application whilst keeping agile. I'm running solo on a startup project I'd like to ...
1
vote
1answer
161 views

Debugging xml and annotations

By now, most web containers have an annotation variant of their xml configurations for Java EE. I'm guessing this is because it's better to keep things in Java where they can be managed, coded with ...
0
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0answers
38 views

what is the relationship between CORBA, JMS and MDB?

In the context of my previous fuzzy question on microservices, please help me break down the terminology involved in these technologies: CORBA JMS MDB Utilizing JNDI, I believe it's possible to do ...
1
vote
0answers
44 views

How is ORB distinct from an endpoint?

What, fundamentally, am I misunderstanding about how to use appclient? The Application Client Container (ACC) includes a set of Java classes, libraries, and other files that are required for ...
2
votes
1answer
52 views

Use of validators for simple validations

I've been working in Liferay code, and I've come across this construct a few times: List<?> list; ... if (Validator.isNotNull(list)) { //do stuff }} The source code for Validator.java ...
0
votes
3answers
212 views

SOA, Java EE and data organization

At the company I work for, we're currently splitting up our monolith solution into a number of small services (SOA). The purpose of this is to make the developers working on each chunk of code ...
1
vote
0answers
95 views

Best practices for programmatic describing of behavior of complex input forms

We have a complex web form (we use GWT/GXT stack) with lots of input elements of different types (text fields, selects, checkboxes, buttons), and behavior of these elements depends on each other. Now ...
2
votes
1answer
133 views

Java App as Tomcat Service?

I currently have a basic j2ee website. Currently, a jsp frontend gets data from the backend (the java program, lets call it object "Score"). The backend gets this data from a web site. <% Main m ...
2
votes
1answer
358 views

How to package static content outside of web application?

Our web application has static content packaged as part of WAR. We have been planning to move it out of the project and host it directly on Apache to achieve the following objectives. It's getting ...
6
votes
4answers
7k views

Is there a recommended order to take the Oracle Java EE certification exams? [closed]

I recently passed the Oracle Certified Professional, Java SE 6 Programmer examination. Now, my boss would like me to take "the next step" to broaden my competence. I tried to explain that there is no ...
4
votes
2answers
76 views

Toggling “maintenance mode” in Java EE app

I've been toying with the idea of feature toggles for various configuration/access purposes, but have been a little unsure of myself when it comes to toggling something like a downtime or maintenance ...
-3
votes
3answers
142 views

What programming languages are most suitable for implementing design patterns? [closed]

What programming language is best for implementing design patterns, (Factory , etc) especially for example if I need to develop a engineer scheduling system in less than a month. Would Java be my ...
3
votes
3answers
4k views

Customer wants to modify the .properties files packaged in our WAR file

I have a customer who wants the ability to modify the .properties files packaged in the web applications WAR file so that they have the control to modify environments at settings. They will be ...
2
votes
3answers
312 views

Could the creation of many methods in Java affect performance? [closed]

I was told by a colleague that in Java, the performance may be worse if we create more methods, stacking many methods calling over them in JVM, specially in a Java EE environment. This seems to ...
1
vote
1answer
170 views

How to avoid model duplication in JavaEE web applications with a JSON front end

Recently we developed a web app that uses the following tech stack: hibernate as orm spring extjs (MVC javascript front end) For 1 business object, let it be a Personnel, we have: 1) a Personnel ...
18
votes
4answers
20k views

Dev vs Stage environment vs Prod Environment

I work for a company where we build enterprise applications, and we maintain three environments: dev, stage and prod. The meaning of dev is intuitive: it's the environment used during development of ...
6
votes
2answers
1k views

exact answer for “what is j2ee?” - job interview [closed]

I'd like to ask if someone of you knows the exact meaning of JEE. That's because a collegue of mine was asked this question in a job interview, and was "unable to answer properly"... to speak with ...
5
votes
6answers
582 views

Desktop to Web - How to deal with user-interactive workflows

I start a new project this summer, consisting in developing a web version of a proprietary desktop ERP. The main goal of my company is to be able to propose a web version of its ERP, with all ...
0
votes
1answer
111 views

How should a JEE application store credentials for logging in to an external system?

I am in a situation where I have a Web Application (WAR) that is accessing a REST service provided by another application. The REST service uses Basic HTTP Authentication. So that means the ...
0
votes
3answers
349 views

Why do APIs generally consist of interfaces? [duplicate]

I am starting out in Java API design and in reading existing code bases, I have found that most APIs consist of interfaces only with their implementations bundled in a different package. Having read ...
3
votes
3answers
277 views

If I unite many web apps into one, will I save resources?

I'm comparing 2 different approaches of J2EE application architecture: Divide independent parts as modules of one big web app. Divide independent parts as different web apps running on same server. ...
0
votes
4answers
778 views

Why isn't Java being used for web multimedia applications? [closed]

I've been focusing on multimedia applications and I've noticed that most applications don't use Java in the back end. Instead, I see solutions with PHP/ROR/Python and Flash/Silverlight without any ...
2
votes
3answers
2k views

What is meant by 4 GL?

I came across the term 4GL(generation language) in reading about Oracle ADF Busniess components . I want to know what exactly is 4GL ? This is the actual quote from the book Oracle Fusion Guide: ...
50
votes
1answer
8k views

What are these different Java versions for?

I am just about to start my Java journey, ( I've already dabbled in C++) but I am getting really confused about all the different versions of Java: JavaSE JavaEE JavaFX etc. Can someone explain ...
0
votes
1answer
126 views

Best way to make synchronous calls between JEE apps [closed]

I have two jee web apps that are going to be published on the same physical server, but on different network addresses. APP A: Listens to a port on a public IP address and makes synchronous ...
0
votes
0answers
67 views

Including front end designers in enterprise web development

We are developing a web application using Java EE. The stack is heavy, the deployment is complex and now we want to include a purely CSS designer in the team. We want to include this designer without ...
2
votes
2answers
372 views

J2EE - Session swap

Application server - JBoss AS 7.1.1 JDK6 J2EE 1.3 My web application is more than 10 years old and facing this session swap problem in my portal. Noticed that swap happens mostly when many ...
-5
votes
4answers
294 views

Why creativity is consider a bad practice by architects? [closed]

If you do something creative (for example I did a new approach to logging) is consider a bad practice. the good practice in Java is to put static field logger in every class. My approach creates ...
1
vote
1answer
117 views

Implementing an interface from a framework vs simple java interface

This concept is unclear with me. I have worked on several frameworks for an instance Spring. To implement a feature we always implement some interfaces provided by the framework. For an instance if ...
4
votes
5answers
16k views

Java web application folder structure

As a beginner to J2EE, I have recently started developing my own project from scratch using the Core of J2EE : Servlets & Jsps. I could not evaluate whether my project folder structure is right ...
4
votes
6answers
8k views

How to learn Java web application development? [closed]

I’m planning on making a Java web application using Amazon Web Services Elastic Beanstalk. AWS Elastic Beanstalk basically provides PaaS on top of AWS’s cloud computing resources. The problem I’m ...
1
vote
1answer
472 views

Applying DDD principles in a RESTish web service

I am developing an RESTish web service. I think I got the idea of the difference between aggregation and composition. Aggregation does not enforce lifecycle/scope on the objects it references. ...
1
vote
1answer
191 views

The Nature of Spring [duplicate]

Is it accurate to say that dependency injection manually using java (without spring) is nothing but implementing the strategy pattern (as per this example)? Furthermore, is it correct to say that ...
4
votes
1answer
402 views

Shall I separate the admin part from the rest of the war

I built a web-applicationg using struts2. Then I built a small admin interface in the same war. With time the webapp grew and so the admin-interface. Now, I'm thinking to separate the admin interface ...
35
votes
5answers
9k views

Is object pooling a deprecated technique?

I am very familiar with the concept of object pooling and I always try to use it as much as possible. Additionally I always thought that object pooling is the standard norm as I have observed that ...
4
votes
1answer
471 views

Web app outgrowing current framework

I have quite a bit of experience with using Django for websites and so when I started a new project I naturally chose to use Django for it. Everything went well for a time but now the application is ...
4
votes
3answers
5k views

Heavy use of static methods in a Java EE web application?

Generally I am asking if this is a norm. The application architecture includes spring and the zk framework. I personally can't help but think this introduces a number of problems. I mean...this is a ...
0
votes
1answer
118 views

Do JAX WS implementation classes come as part of the Java 5/6 package or only as part of an application server libraries?

Do JAX WS implementation classes come as part of the Java5 package, as part of the Java6 package or only as part of an application server libraries like WAS? I read that it comes as part of Java EE? ...
1
vote
1answer
9k views

Why use JSP instead of servlets? [closed]

(Rewritten for reopening:) What are relative advantages of Servlets over JSP, or vice versa? Might JSP be preferred because it is easy to put code inside JSP, or Servlets because with them code can ...
3
votes
2answers
19k views

What is the difference between Enterprise Java vs Core Java? [duplicate]

I have some experience in programming in Java but wondering if someone could explain what is the difference between Enterprise Java vs Core Java? Someone asked me a question on whether I use ...
8
votes
1answer
668 views

Why isn't reflection on the SCJP / OCJP?

I read through Kathy Sierra's SCJP study guide and I will read it again more throughly to improve myself as a Java programmer and be able to take the certification either Java 6 or wait for the Java 7 ...
2
votes
1answer
3k views

High-Load Java Server for Multiplayer

I am making a multiplayer game. Now I am trying to choose the technology to connect the android devices to the server. The clients run on Android, and the game is MMORPG. I would like to write the ...
0
votes
1answer
586 views

Creating a separate project for JPA entities

Where I work it is a common practice to create a separate for JPA entities and a project for the web application (the WAR). So basically you have (at least) two project for each application - appJPA ...
6
votes
3answers
268 views

How will writing the transaction part in Java benefit the security of the application, when all other parts are being written in PHP?

A friend of mine while working on a PHP application asked me to write one part of the application in Java. The part that involved transactions. He said it will be better to write this portion in Java. ...
0
votes
1answer
164 views

Controller JSP - no view

Most people say do not use JSPs. But what if I have a JSP that does not show anything, it only acts as a controller? Why would I do that? Because we do not need to redeploy complete webapp to make a ...
1
vote
1answer
86 views

Understanding the meaning of “multiple lifecycles application development”?

Some Agile job posts have a requirement "strong understanding of multiple lifecycles application development", what does it means ? So my question would be: what's that field for, and what would I ...
0
votes
6answers
850 views

Looking to build a 2 java applications. should it be web-based application or standalone application?

The first application (web-based) will be located at site1 and once the information is processed, it will be sent to the second application(web-based) located at site2. Application2 needs to be able ...