Originally posted on the O’Reilly Books OnJava blog. 

My fellow Java Developers. Two years ago I wrote an article on ‘Web 2.0 and Enterprise Java - move over Struts‘ looking at what was likely to replace Struts 1 (then and now a de facto web standard). How did our predictions fare?

Remember that article (and this one) isn’t looking for technical best, but which is going to be a best investment of your time to learn (in a mercenary commercial sense). And if you’re deciding which to use in a project , which framework is going to be easiest to support in 5 or 10 years time?

Broadly speaking, the frameworks we talk about break into two types: those that treat the web as a set of pages, and those that treat the web as a set of components (think Visual Basic, Delphi or Oracle Forms act-a-likes).

So , what has changed in the last 2 years:

1. The rise of Spring. Not only has it gone mainstream, but the Spring MVC, Spring Webflow and Spring-JavaServerFaces are very powerful and widely used web frameworks. A sign of how things have changed is that for Sruts 1 the Spring guys wrote the integration for the (then) bigger Struts framework. For Struts 2 , the integration was provided by the Struts community. With the forthcoming Spring 3 release the framework is increasing momentum; More annotations and less XML in Spring MVC; Rest Web Services out of the box, support for Dynamic languages like Groovy and Spring Webflow becoming a more ‘just use it where you need it’ solution.
2. Adobe Flex and OpenLaszlo - Flash graphical interfaces on the Web, built using Java. I don’t think these will be *the* mainstream choice but I do think the will be more than a just a niche. And for design led companies, nothing else (not even Microsoft Silverlight) can come close in terms of a user ‘wow’ factor.
3. JavaFX and Applets done right (Jim Weaver has a good article on this). More of a competitor to Adobe Flash as both are rich content in the browser using an easily obtainable plugin. JavaFX will appeal to developers because of it’s Java like syntax. I hope I’m wrong, but for rich web content, would you put your money on Sun (an Engineering led company) or Adobe (an almost apple-like design led one)?
4. Frustration with JSF (Java Server Faces). For the last 3 years I’ve thought that ‘*this* is the year of JSF. I’m still waiting not because of lack of demand (as web apps become more complicated and use more Ajax they become more like the JSF component based model). It’s now uphill for JSF as I (and a lot of other Developers) have given up. I’m still waiting for the ‘EJB 3′ moment when JSF becomes more simple and more usable. Remember , we ‘re not talking about technically best, but which is going to be in widespread use.
5. Google Web Toolkit (GWT). Looking at it one way , GWT is JSF done right - a component based web framework , but one that is fast and has a lot of community support. Even then it took me a long while to warm to GWT - I’ve bad memories of web-components that hide their internals (remember Microsoft Interdev 10 years ago?) . What got me over the hump was thinking of GWT as a compiler not to Assembly or bytecode , but to Javascript and HTML.

How has Struts 2 got on in the meantime? I’m not sure. Remember , Struts 2 is very different from Struts 1. Conceptually it’s very similar to Spring MVC (Simple Java Beans based with configuration); Slightly easier to learn and maybe slightly less powerful than Spring (although both are more than capable for most Enterprise web applications.

The ‘I’m not sure’ bit comes from two (non technical) factors:

1. Struts 2 hasn’t achieved the massive Enterprise developer mind share that Struts 1 did. It’s a better framework, but it’s got more competition.
2. If you’re using Spring in the middle tier, why not have one less framework and use Spring MVC (instead of Struts 2) in the presentation layer as well?

Back to the previous predictions , how did we get on?

Scenario 1: Adding Ajax to existing Struts Applications. Use AjaxAnywhere - closest to the approach taken in the article Sprinkle Some Ajax Magic into your Struts Web Application. Despite writing this article , I see the frameworks evolving rapidly to the point where you would only take such an approach for adding Ajax to ‘Legacy’ applications.

How did we do? I’d maybe widen the choice of Ajax Libraries (to include DWR , Dojo, Prototype and others) but the basic idea of evolving rather than replacing your Struts 1 app still holds true.

Scenario 2: Need Ajax Now for a new Java Application. Use Appfuse as it gives Struts, Ajax (with DWR) and the possiblity of JSF integration now, all ‘out of the box’.

How did we do? I still recommend AppFuse, as it combines (name-your-web-framework) with Spring Hibernate(and other ORM) and Maven. However I’d now tend towards choosing Spring MVC (unless you’ve a reason to use Spring 2), given that you’re probably already using Spring in the mid tier.

Scenario 3: Medium Term. Use an implementation of JSF (either MyFaces or whatever Appfuse promotes - probably Struts Shale). Struts Shale (JSF) has so far released only ‘overnight’ builds. Apache MyFaces (JSF) tool support and Ajax capabilities are likely to improve over time. Both Struts-Shale and MyFaces are likely to play well with AppFuse , making it a safe bet for investing your time checking it out.

How did we do? Struts2 and Spring both still give you migration route to JSF. But do you want it?

So out of the creative ajax-induced chaos of 2 years ago, I see 4 or 5 clear choices in Enterprise web frameworks: Struts 2 (as a follow on from Struts 1). Spring MVC, due to the huge mindshare Spring has on the mid-tier. Google Web Toolkit , both as a natural home of frustrated JSF developers , and because who’s going to argue with the people who gave us maps and mail? Flex, because Flash apps done well just look so good. And JavaFX, because Applets-haven’t-gone-away-you-know.

In my view, we would have been delighted to have any of these framworks 5 years ago. And each (for different reasons) is likely still to be popular in 5 years time. Your missions now is to pick the one that suits your project needs.

No apologies for over simplifying this :

1. If you’re in business you need computer systems to support your team. Systems to find previous dealings with a customer, systems to allow your team to work together, systems to stop people finding out things that they shouldn’t.
2. Once your business passes the 100 employee mark and is heading for ‘Enterprise’ scale, chances are you need custom software written just for you, in addition to he ’shrink wrap’ stuff you’ve been able to get away with until now.
3. Most custom Enterprise software is written in (or uses a large element of) Enterprise Java.
4. Enterprise Java is hard to get started with - it’s a big and complex framework because it solves big and complex problems. The Spring framework makes it easy.

OK, so we’re Spring nuts. But nuts only because it’s solved problems for FirstPartners over the last 4 years. What we like:

• Spring allows you to use just enough Enterprise Java to solve your problem
• Spring complements Enterprise Java, not replaces it.
• Spring gives you a gentle slope to using Enterprise technologies.
• Spring works well with Java, Oracle, .Net , (J)Ruby and pretty much any mainstream technology - including most of the widespread Java Frameworks like Struts and Hibernate.

So you wait ages for one Spring Event in Ireland, then two come along at once. We’ve written about Rod Johnson speaking in Dublin on Tue March 11th. Now there is a full day Spring Event in Belfast the day before (March 10th). And it’s sponsored by Momentum NI, so it’s free. And the Hilton Hotel is right beside Belfast Central train station, so it’s easy to get to from Dublin.

The full agenda is here (more details below), but given the importance of Spring to the Enterprise world, and the fact that the top four Spring guys are speaking, we reckon that it the Enterprise event of the year. The booking form is here.

Spring Ireland 2008

Start: 10th March 08:30 End: 10th March 17:30
Hilton Belfast, 4 Lanyon Place, Belfast (Beside Central Train station) SpringSource is proud to announce Spring Ireland 2008. Join us for a free one-day conference with presentations from the SpringSource team including a keynote from Rod Johnson.

Keynote: Spring into the Future - Rod Johnson

The Spring Framework began in 2002 with Rod’s best-selling Expert One-on-One J2EE Design and Development; one of the most influential books ever published on J2EE, Rod is recognised as one of the world’s leading authorities on Java and J2EE development.With the rapid expansion of SpringSource and move to new corporate HQ in Silicon Valley, this is a rare UK opportunity to hear Rod provide his views and explore the future of J2EE application development.

What’s New in Spring 2.5 - Sam Brannen

Sam is a lead architect at SpringSource and one of the most experienced developers within the organisation.This session provides delegates with an overview of the new features available in Spring 2.5. Specifically, highlighting the simplified and extensible configuration support provided via configuration annotations and new XML configuration namespaces, new Java 6 support, updates to Spring AOP, improved JDBC and JPA support, annotation-driven web MVC controllers, the new annotation-based TestContext framework for unit and integration tests and more!

SpringSource Professional Services – Greg Southey

Greg has built SpringSource’s UK Professional Services organisation into the leading Spring consultancy business in the world.

This is a brief resume of some of the 97 major projects completed by the UK Professional Services team in 2007. Delegates will hear about the business drivers behind some major development projects, the business issues faced and how they were resolved in partnership with the client.

Spring as a Full Stack Web Framework - David Syer

As Principal Consultant at SpringSource, Dave leads the way in the understanding of satisfying business requirements using the Spring Portfolio. His easy manner cloaks a prodigious knowledge of application development.

This session explores the “full stack” web framework trend and answers the question: how does Spring stack up? This session defines what a full-stack web framework is, then provides a fair technical comparison between a Spring-centric web development stack and the alternatives. Delegates will head about the feature-set of modern “full stack” web frameworks, and what Spring has that differentiates itself from the pack.

Spring in Ireland – Ian Graham

Ian Graham, Momentum, will explore the use of Spring in Ireland and introduce case studies from companies who are using the Spring family of products.

Round Table Discussion - Rod Johnson, Rob Harrop, Dave Syer, Sam Brannen & Greg Southey

Your chance to ask Rod and his team anything that’s on your mind regarding Spring!

Just looking for the Drools BRMS - Business Rules Management System Guide? - click here (pdf)

The aim of JBoss Drools (or any other Business Rules Engine) is to get knowledge out of business user’s heads and into a format where it can be copied , edited and peer reviewed , then run 24/7. Ideally, business users should be able to write these rules directly (a) to save time and (b) to reduce errors caused by a 3rd party having to to ‘translate’ these rules into code..

Drools BRMS (Business Rules Management System) is such a tool. Easily deployed into almost any Java Web or App server, it allows users to write and validate business rules that you can then pull into your Enterprise Java Application.

Because it uses the Google Web Toolkit (GWT) , even though it is a web application (i.e. zero install on client machines) it behaves and performs as fast as a desktop one. And unlike some other (Commercial) Rules Engines, it’s free to Download and use (under the Apache licence) from the JBoss site.

And now there is a guide available online. Shortly to be integrated into the existing JBoss Drools documentation a preview of the JBoss Drools BRMS guide (pdf) is now available.

More Information

• JBoss Drools Homepage.
• JBoss BRMS Chapter in the technical documentation
• JBoss Drools Blog

I’ve been lucky enough to have been using Spring for just over 4 years. If you don’t know what Spring is, it solves a lot of problems in complex Enterprise Java Systems. And it makes those systems more configurable; Spring makes your code like Lego blocks. Blocks that you can take apart and use again and again (no matter what the underlying technology is). And because you can take it apart, it makes your code easier to test. And testing is a good thing - the earlier you find bugs , the cheaper they are to fix.

Get the feeling that I’m a bit of a Spring fanatic? Wasn’t always that way. It took me two projects where other people had choosen Spring to convince me. And did I mention that it’s one of the most in demand skills in the Java world?

Rod Johnson (aka ‘Mr Spring’) is speaking in Dublin at the Westin hotel Dublin on the 11st March. It’s fairly central, and it’s a breakfast briefing, so you don’t even to have to arrange the day off work. More details on the event are on the Kainos Website.

Update: The registration form to sign up for the event is here.

I’m dipping in and out of the presentations at the Irish Java Technologies Conference (IJTC Dublin), so I’m not going to get to see the top 10 speakers. I will update this as it goes along, but my notes on the conference so far are ….

• Bernie Goldbach came all the way from Tipp on the off-chance that he would get 3 minutes with Joel Spoelsky. Given that it’s a 4 and half hour round trip, I’m glad that he got his interview.
• Joel, as ever, was a very good speaker. His message for software developers; soft rounded corners matter. Think iPhone instead of Samsung brick.
• David Syer of Interface 21 was talking about what’s next for Spring (2.5 and 3.0). A lot of good stuff coming up; support for the latest Java Enterprise specs, Webflow , OSGi (deploy bundles , not applications), configuration using annotation instead of XML
• Shaun Smith of Oracle. Covering building JPA Applications (Java and Databases) using Eclipse and Java. Now, I’m not a great fan of Toplink (I prefer Hibernate) , but the open source work including the work on the Eclipse IDE , and it’s support of the JPA (Java Persistence Architecture) standard, and it’s ability to transform Java Ojbects into loads of things (e.g. XML instead of Database Tables) is making me want to take a 2nd look.
• Caught talking in the Lobby : Shaun of Oracle Toplink and Emmanuel Bernard of Hibernate. I was vaugely disappointed these two didn’t come to blows (being from rival projects). There were actually nice to each other and exchanged business cards. Fascinating conversation though …
• James Strachan , Iona and Apache, speaking about messaging patterns. He takes the bean soup that is messaging and integrating your applications and makes it seem really simple. He’s also talking about Apache Camel, ActiveMQ and ServiceMix

Other People Blogging about this:

• Luan O’Carroll , who put a lot of work into making the conference happen.
• The O’Reilly GMT announcement of the Irish Java Conference.
• The Aquarium blogging about the conference “around the corner”.
• Web2Ireland.
• Bill de hOra, who has a good blogpost about the conference.

Links to our JBoss jBPM (Workflow/ Business Process Management) presentation slides to follow shortly …

Not (too blatant) a plug for the Irish Java Technologies Conference (IJTC). Although if you’re around Dublin on the 7th / 8th / 9th November I’m told you’re more than welcome to drop in. This post is more a quick review of the people who are speaking. It’s also an invitation to check out their websites and see if any of the technologies they are promoting could be of use to your project.

Here are the top 10 projects that I’m looking forward to checking out.

10) Java and Microsoft SQL Server : It’s still a brave Microsoft person that comes to a Java conference. Shows MS recognition a substantial amount of Java deployments persist their Data to a SQL- Server database.

9) Eclipse STP (and SOA) - Service Orientated Architecture is the buzzword of the year. If anybody can put substance behind the hype , it’s the guys From Iona.

8) Eclipse JPA and Dali. Hibernate pushed Object Relational Mapping (ORM) to be the standard approach to database access. The manager of the ‘other’ ORM Project (Oracle Toplink) should give a interesting coverage of the tooling developments.

7) Apache Geronimo - by Jeff Genender from Apache Foundation. So long the ‘other’ Open source application server, this is now becoming credible in commercial deployments.
6) Java Update - Simon has been working as a lead Java consultant for Sun Microsystems. He’ll be talking about Java Standard Edition 6 and Java Mobile Edition. But what I’m really interested in is Java Enterprise Edition 5, Scripting, Java Realtime and Java FX.

5) If scripting is your thing fellow Onjava Blogger Dejan Bosanac is also speaking on this subject. He’s talking about Scripting within the JVM, which will be one of the hot topics for 2008.

4) iPhone v JMME - I don’t get the buzz around Mobile (give it another 18 months , we’ll all be running Java Application Servers on the mobile). But many people are interested in it - this talk is how to make you Mobile Java apps as slick as those in the iPhone.

3) JBoss Drools Engine (Drools) - I’ve blogged (a little bit) about Drools before. I’ve also been fortunate enough to hear Mark Proctor speak and you will come out an convinced that the natural home for Business Logic is in the Rule engine.

2) JPA and Hibernate - There is a very strong possibility that Emmanuel Bernard will be returning to Dublin to talk about the Hibernate project that he leads. Having seen his recent talk, and given the level of interest in Hibernate, I expect a strong turnout for this one.

1) Spring 2.5 - Spring has been around for more than 5 years and is making serious inroads in the the Enterprise Java community. Sam Brannen (from Interface21) will give details on the latest on the major update to Spring (2.5) as well as what is planned for the future.

Disclaimer: I’ll be talking about Java Workflow (based on on JBoss jBPM). But compared to these guys, I’m way down on the Z-List of presenters.

Other People Blogging about this:

• Jakub Korab, one of the conference Organisers
• Luan O’Carroll - another conference Organiser
• Web 2 Ireland
• The SPOT Blog.
• Tom Raftery
• Clare Dillon, Microsoft
• Dejan Bosanc’s Personal Blog
• Dr Root
• The Spring Framework Blog

I’m not going to cross post my O’Reilly Blog entry on Red Hat Developer Studio.

I’ll just give the 2 minute summary. An IDE (integrated Development Environment) is like Microsoft Office for Developers - you could use notepad instead, but an IDE makes the overall writing experience easier. Microsoft Visual Studio is the main non-Java IDE. For Java , you have the choice of Eclipse (and other tools built on it such as JBoss IDE, JBuilder ,Websphere and Weblogic studio), IntelliJ or Sun’s Netbeans. Very much a personal preference as to which is best of the three of these.

For me, I tend to use Eclipse (1) because I can install it on any client site (2) If an IDE preference is stated on a project, it tends to be Eclipse and (3) There are plugins available for almost anything - including non-Java languages such as Ruby.

Or rather , I download a version of Eclipse with all the plugins pre-packaged - which is what Red Hat Developer Studio does.

Full Install Notes on / Getting started with Red Hat Dev Studio are here.

Fergal Breen asked to blog about the Dublin Silverlight event, but Stephen Downey beat me to it. (Update: Ken McGuire is also writing about the event)

Microsoft Silverlight is a flash competitor; It looks good and is well worth checking out, but I’ve got my reservations if it is truely as portable as Flash (see comments on Tom Raftery’s Silverlight launch post). All the same, Silverlight is going to be big (it’s backed by Microsoft), and the IDE / Editor is setting a good standard.
Not sure? Go to the Event and make your own mind up.

Lead developer from JBoss, coming to Dublin to talk about Hibernate on 15th October. What else could you be doing that evening? Full details on Developers.ie.

What is Hibernate? Java programs are like Lego blocks - very 3D with bumps on them to connect together. Database tables to store data are like flat sheets of paper. Hibernate is a bridge between these two very different worlds. In technical terms, it’s called Object-Relational-Mapping (ORM).

Why is it important? Hibernate is the defacto standard in the Java World, and has had huge influence on the most recent version of the EJB spec. There’s a .Net version and even competitors (such as Toplink from Oracle) are moving to the Hibernate way of doing things.

Flash is created by cool people who wear black and use Apple Macs. If you’re not sure as to what flash is, the chances are that if you’ve seen something on the web recently that made you go ‘wow’ for it’s coolness, then it was built using Adobe Flash.

To add substance to this froth Java people can use Flash (instead of normal web pages) to create cool pages that do useful stuff. For example Google Analytics uses Java and Flash to create a stunning User Interface. Even though Ajax and DHTML give you a lot of interactivity on your web pages, Flash goes one better at the small cost of not being as good for SEO and requiring a plugin (that most people already have installed).

So, what are you to do if you want to combine the coolness of Flash with the heavy lifting of Enterprise Java on the Server? The two main options are:

1. Flex from Adobe is one way for Java people to create flash. The core toolkit is free, but the editor costs about $500 and that’s before you pay for using it on your servers. More details in the previous blogposts on Adobe Apollo and Adobe Flex.
2. Open Laszlo Project is open source all the way, but does’t have a drag and drop editor (i.e. it’s more technical than graphical). Still , it allows you to create some cool effects , such as this Flash Clock.

Which framework will win out? I don’t know , and that’s before you even consider the Standard Java Web Frameworks such as Struts 2.

More (In progess) notes on Open Java and Flash are on the wiki. In an impulse buy , I bought the OpenLaszlo in Action yesterday. As an EBook , with rebate (coupon LZ35607 before the end of August) it costs about 10 Euro. Initial impressions are good (both for the book and Open Laszlo) , but I’m still working my way through it (so don’t quote me on it).

Disclaimer: I get a rebate if you buy the book from Amazon, but not if you buy the (Cheaper) E-Book direct from Manning. I bought the E-Book this time, but have got free books from Manning in the past for having reviewed (as yet unpublished) JBoss items.

(Struts is one of the most popular way for companies to build their websites. This was to be posted on Bill moaning about Struts 1 problems, but Bill’s blog isn’t accepting comments at the moment.)

Bill,

I hate to spoil your Struts 1 party , but most of these problems have been known for some time (and the Struts team would be the first to articulate them). Struts 2 is a huge improvement and , as you mention, there are good alternatives out there (including Spring MVC).

The problem is that migration from Struts 1 to (for example) Struts 2 , while easy, still carries a risk for the project in question. It can be hard to convince the business decision maker when all they see is pain (’so you’re going to break the existing site?‘) for very little gain (’where’s the immediate payback of upgrading?‘).

My advice is to stick with Struts 1 on existing projects. Use Struts 2 (or even better, Appfuse) on new projects. And for new code on existing projects, consider running them both side by side. They’re all tried and tested solutions.

Paul

• More blog posts on Struts
• More blog posts on Struts 2
• Struts 2 Training outline
• Wiki Page - Struts 2
• Wiki Page - Struts 2 and Ajax
• Whitepaper - Adding Ajax to Struts 1

Some time back , I wrote an article for Java.net about How to add Ajax to your Struts Application. It’s pretty straightfoward (as is Ajax underneath all the hype), but it still involves too much JavaScript for my liking. Nothing against JavaScript, but if you write it , you have to support it. Far better to use a standard Ajax library , like DWR , Prototype or Dojo.

(As a reality check , if you don’t know what Ajax is , this article explains what Ajax is and what it can do)

Along comes Struts 2 (. Be careful - it’s good , but very different from Struts 1 - it should have been called WebWork 3). It does a lot of things better - for example , the way it’s Actions are normal POJO’s makes it a lot of things easier to unit test.

Struts 2 also gives you Ajax ‘out of the box’. No writing of javascript, no debugging against various browsers; just configure and go. A full description of how to setup Struts 2 to use Ajax is in this wiki article. The quick version is:

1. Setup Struts 2
2. Add the Struts-Ajax URL and Div Tag.

That’s it. Ajax without the fuss.

After months of intimidation encouragement , Andrew has finally taken to the blogosphere and made his first post.

It may not be worth USD 135,000 per year, but a colleague asked me to post this requirement of a Microsoft Visual Basic .Net trainer. Experience in Visual Basic and VB.net required, even better if you’ve delivered training before. Location is Ireland (sorry to be deliberately vauge).
Drop me a line at Paul@Firstpartners.net and I’ll pass on your details. Even better, post me a link to your blog.
We’d do it ourselves, but we’ve the problem of being ‘nicely busy’ and everybody that I’d recommend is likewise.

Introduction to Visual Basic and the .Net Framework

Microsoft’s .NET

The .NET Framework and the Common Language Runtime

Test-Driving a Visual Basic Application

Introduction to Object Technology and the UML

Overview of the Visual Studio 2005 IDE

Menu Bar and Toolbar

Navigating the Visual Studio IDE

Using Help

Using Visual Programming to Create a Simple Program

Displaying a Line of Text

Creating Your First Console Application in Visual Basic

Displaying a Single Line of Text with Multiple Statements

Adding Integers

Memory Concepts

Arithmetic

Decision Making: Equality and Relational Operators

Using a Message Dialog to Display a Message

*Introduction to Classes and Objects *

Introduction

Classes, Objects, Methods and Instance Variables

Declaring a Class with a Method and Instantiating an Object of a Class

Declaring a Method with a Parameter

Instance Variables and Properties

Value Types and Reference Types

Initializing Objects with Constructors

Validating Data with Set Accessors in Properties

Control Statements: Part

Introduction

Algorithms

Pseudocode

Control Structures

If … Then Selection Statement

If … Then … Else Selection Statement

While Repetition Statement

Do While … Loop Repetition Statement

Do Until … Loop Repetition Statement

Visual Basic Programming in a Windows Application

Essentials of Counter-Controlled Repetition

For … Next Repetition Statement

Examples Using the For … Next Statement

Do … Loop While Repetition Statement

Do … Loop Until Repetition Statement

Using the Exit Statement in Repetition Statements

Using the Continue Statement in Repetition Statements

Logical Operators

Methods: A Deeper Look

Introduction

Modules, Classes and Methods

Subroutines: Methods That Do Not Return a Value

Functions: Methods That Return a Value

Shared Methods and Class Math

Notes on Declaring and Using Methods

Method Call Stack and Activation Records

Implicit Argument Conversions

Option Strict and Data-Type Conversions

Value Types and Reference Types

Framework Class Library Namespaces

Passing Arguments: Pass-by-Value vs. Pass-by-Reference

Scope of Declarations

Recursion

Arrays

Introduction

Arrays

Declaring and Allocating Arrays

Examples Using Arrays

Passing an Array to a Method

For Each … Next Repetition Statement

GradeBook Case Study: Using an Array to Store Grades

Sorting an Array with Method Sort of Class Array

Searching Arrays

8. Searching an Array with Linear Search

8. Searching a Sorted Array with Method BinarySearch of Class Array

Rectangular Arrays

Variable-Length Parameter Lists

Jagged Arrays

Using the ReDim Statement to Dynamically change array size

Passing Arrays: ByVal vs. ByRef

*Classes and Objects: A Deeper Look *

Introduction

Time Class Case Study

Class Scope

Default and Parameterless Constructors

Overloaded Constructors

Partial Classes

Composition

Using the Me Reference to Access the Current Object

Garbage Collection

Shared Class Members

Const and ReadOnly Members

Exception Handling

Introduction

Exception Handling Overview

Code in a Try and Catch Blocks

Catching Exceptions

Uncaught Exceptions

Termination Model of Exception Handling

Flow of Control When Exceptions Occur

.NET Exception Hierarchy

ApplicationException and SystemException

Determining Which Exceptions a Method Throws

Finally Block

Exception Properties

User-Defined Exception Classes

Graphical User Interface Concepts: Part 1

Introduction

Windows Forms

Event Handling

Control Properties and Layout

Labels, TextBoxes and Buttons

GroupBoxes and Panels

CheckBoxes and RadioButton s

PictureBoxes

ToolTips

NumericUpDown Control

Mouse-Event Handling

Keyboard-Event Handling

Menus

MonthCalendar Control

DateTimePicker Control

LinkLabel Control

ListBox Control

CheckedListBox Control

ComboBox Control

TreeView Control

ListView Control

TabControl Control

Multiple Document Interface (MDI) Windows

Visual Inheritance

User-Defined Controls

Multithreading

Introduction

Thread States: Life Cycle of a Thread

Thread Priorities and Thread Scheduling

Creating and Executing Threads

Thread Synchronization and Class Monitor

Multithreading with GUIs

Files and Streams

Introduction

Data Hierarchy

Files and Streams

My.Computer.FileSystem Object

Creating a Sequential-Access File

Reading Data from a Sequential-Access File

Random-Access Files

Creating a Random-Access File

Writing Data Randomly to a Random-Access File

Reading Data Sequentially from a Random-Access File

Creating a Sequential-Access File

Reading Data from a Sequential-Access File

Update: The presentation to the Irish Java Technologies Conference: Life and Death Workflow, using JBoss jBPM is partly based on this training session. (Link to Slides)

We’ve given Enterprise Java Training, Struts 2 Training (the most widely used Java-Web framework), and now it’s the turn of JBoss Rules (Drools) , Workflow (jBPM) and Seam. A lot of the material is coming from the forthcoming Masters Dissertation on Enterprise Web 2.0.

The course (summary below) is a private session. If there’s enough interest I’ll setup a public training session, or cut it back to 1 hour and do it as a ‘free’ intro session. If you can’t wait for that, Mark Proctor’s blog has a lot of useful rules information, and Tim Shadel has the pdf of a presentation that he gave in Phoenix Arizon on his blog.

Knowledge and Process Management

JBoss Rules, jBPM and Seam

Executive Briefing

Description: Success or failure in your business depends on dealing with information faster and better than your competitors. This briefing shows you how the JBoss Business Stack (Rules , jBPM and Seam) can do this and how to apply it to your organisation. Crucially, the briefing shows you when not to use these and details the alternative approaches.

The briefing will give delegates an overview of JBoss Rules within a web / enterprise development environment, how to architect an distribute rules within multi-tier applications and how to link these components with existing sources of information using Enterprise Application Integration (EAI).

Audience: This Briefing is suitable for IT Managers and Directors, IT project managers and technical staff who need an insight into the latest JBoss technologies and business processes, and business managers who need to be aware of the new application models and to give buy-in and commitment to applications developed within it.

Duration: Half-day

Objectives: On completion of this Briefing, delegates will:

• Understand the benefits JBoss technologies offers your business and the key areas where it should be used.
• Know how to successfully use JBoss Rules, jBPM and Seam with new and existing systems and technologies, including the use of Enterprise Application Integration (EAI).
• Be able to boost projects using pre-built components and frameworks and be able to choose the right one for their needs.

• Be aware of the main precepts of good application design within the Java component framework, as well as knowing the main Enterprise Java architecture components, terminology and acronyms and their interaction.

• Understand how end-to-end applications are built using the JBoss frameworks (Rules, jBPM, Seam) and appreciate their organisational impact.

Presenter Biography

Paul Browne has 13 years experience delivering IT Projects in the Financial, IT/ Telecoms, Pharmaceutical and Public sectors. An author on JBoss Rules for O’Reilly Books, he has delivered courses for Limerick Institute of Technology, Siemens, Dell, Trigraph and IACT. Holding a Degree in Business from UUC, he is awaiting conferral of an Msc. in Advanced Software Engineering from UCD.

Briefing Content

Introduction and Problem Space

• Delegate introduction
• Trainer introduction
• Course introduction
• The problem we are trying to solve
• Who is JBoss
• 3 Tier Applications
• What is a rule engine
• Alternatives using Java
• Alternatives to Rules
• Alternative Rule Engines
• Section Summary / Intro to next section

Rule Engine overview

• Business Rules (examples)
• Sample Business Uses
• If then statements - can we do better?
• Rete Algorithm
• Forward and Backward Chaining
• Domain Specific Languages (DSL)
• Decision Tables (what the user sees)
• Decision Tables (for the Developer)
• Rule Editors
• JBoss IDE (Red Hat Tools)
• Advanced Rule Language
• System Development Roles
• Section Summary / Intro to next section

Integration and Deployment

• Web environment
• 3 Tier system
• Integration with Spring
• Integration with EJB
• What is workflow
• What is jBPM
• What is Seam
• Seam and JSF
• Seam and jBPM
• Drools.Net
• Section Summary
• Course Summary and Feedback