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February General Meeting: Thurs, February 7, 2008 6:00-9:00pm at Sun Microsystems 101 Park Ave
Combined meeting with NYC Java Meetup
Speaker: Cameron Purdy - Founder, Tangosol
Title: Creating Grid-Based Data Infrastructures for the Enterprise
Thanks Cameron for the presentation, slides are now available
, thanks to Sun Microsystems for the location, and Sun and Prentice Hall for the door prizes and thanks to the member who posted the slides at the meetup site.Abstract:
Grid based infrastructures are being developed, deployed and used to achieve unlimited application scalability and continuous availability across multiple datacenters. Understanding the additional capabilities of these infrastructures and how they can be used to solve increasingly difficult and complex problems will help to ensure that organizations are getting the maximum utility from Grid Computing. This session will focus on how Data Grid capabilities function, such as coherent in-memory caching, dynamic data partitioning, and parallel query and process execution, and how they are being mapped onto grid infrastructures. Organizations are using these Data Grid capabilities in order to provide real time risk analytics, complex event processing and algorithmic trading, and "follow-the-sun" order management systems. Additionally, the session will draw specific attention to how organizations are able to implement these capabilities on a global scale.
Attendees Will Learn
- How Data Grid capabilities function.
- How organizations are using them to solve complex computing problems.
- Examples of how organizations are leveraging this on a global scale.
Speaker Bio:
Cameron Purdy is Vice President of Development at Oracle. Prior to joining Oracle, Mr. Purdy was the CEO of Tangosol, whose revolutionary Coherence Data Grid product provides reliable and scalable data management across the enterprise. Mr. Purdy has over ten years of experience with Java™ and Java-related technology. As a software visionary and industry leader, Mr. Purdy is a frequent presenter at industry conferences and has received a number of awards in recognition of his contribution to the Java community, including twice being named as a JavaOne RockStar and being recognized in TheServerSide’s “Who’s Who in Enterprise Java”. He regularly participates in industry standards development and is a specification lead for the Java Community Process.
-some door prizes courtesy of Sun Microsystems-
Note: this was a combined meeting with the NYC Java Meetup
January 2008 General Meeting (and SCJP 6 study group combined meeting):
Thurs, January 3, 2008 6:00-9:00pm at NYPC
Topic: "Generics and Collections" slides
Speakers: Dario Laverde, Gary Russo
Overview and introduction to Java 5's Generics and Collections (including the new collections in Java 6). All you need to know about generics and collections for the SCJP 6 exam as well as the following additional topics: reification, reflection, and effective generics.
Advanced topics include some uncommon usage and puzzlers as well as related Java 7 proposals.
So if you're new to Java's generics or even if you've been using them but want to review why or how it can get complex (and what's in store for Java 7), please stop by and invite your colleagues. No RSVP is necessary but seating may be limited. There will be door prizes.
Reference Books:
- Java Generics and Collections - Maurice Naftalin, Philip Wadler (O'Reilly)
- SCJP Sun Certified Programmer for Java 5 Study Guide - Kathy Sierra and Bert Bates (K&B)
Additional Java Generics Notes
Tues, Decenber 11 - 6:15-9pm at 220 East 23rd Street (between 2nd and 3rd ave), Suite 707
door prizes courtesy of Sun Microsystems
Speaker: Dr Heinz Kabutz
Title: The Secrets of Concurrency
slides now available: http://www.javaspecialists.eu/talks/nyc07/Concurrency.ppt
Abstract:
From the first version of Java, we have been able to create multiple threads. Initially, this was mostly used for making our GUIs more responsive. For example, we would read a file using a separate thread from the main Swing thread, updating the GUI as to the progress. Running many active threads on one CPU seldom made the program faster, on the contrary, the swapping overhead frequently bogged down the machine.
However, in the last few years, the speed increase of CPUs has not been the clock speed, but the number of cores on each chip. We are in a position now where we can get a job done much faster by splitting it between multiple threads.
Unfortunately there is still a lack of understanding of the mysteries surrounding threading. This has caused programmers to write code that is fundamentally incorrect, not taking into account best practices for threading.
Here is an example of such incorrect code, seen today on a web forum:
synchronized (namedQueues) {
try {
namedQueues.wait(5000);
} catch (InterruptedException ie) {
// Can safely ignore this
}
}
if (isInterrupted() || isStopped())
break;
In this talk, we look at ten laws that can help us to write more correct threaded code. We will now briefly summarise these ten laws:
1. The Law of the Sabotaged Doorbell
We show how to manage the InterruptedException. Since they are thrown by several methods in Java 5, this is useful to know.
2. The Law of the Distracted Spearfisherman
When analyzing threading problems, we should know what every thread is doing. If we gloss over one thread without understanding it, we can easily miss a problem.
3. The Law of the Overstocked Haberdashery
Threads use up resources, even if they are not active, putting an upper limit on the number of threads in our system.
4. The Law of South African Crime
Fields can be cached locally by threads to improve the performance of retrieving their value. Thus, if one thread modifies a field, the other threads might not see the updated value.
5. The Law of the Leaked Memo
The Java Memory Model allows the hotspot compiler to reorder statements, as long as the final result is still correct. This can lead to some results which seem logically impossible.
6. The Law of the Corrupt Politician
Data races can cause the best objects to become corrupt. They can be really difficult to detect and analyse. In this law, we look at how wecan avoid these problems.
7. The Law of the Micromanager
Adding synchronization to our code can cause problems with contention, where threads are waiting for each other to execute a critical section.
8. The Law of Greek Driving
The rules of the road for Java threading are quite strict, but not enforced by all of the Java Virtual Machines. Even though your code seems correct, it might still be wrong.
9. The Law of Sudden Riches
Sometimes a system has latent defects that are only seen every few months. When running the system on faster hardware, these defects are amplified and can happen more frequently.
10. The Law of the Uneaten Spinach
It is often possible to detect deadlocks in Java, but unfortunately it is impossible to recover cleanly. The only option is to analyse the problem that caused it and then restart the JVM.
This talk has been presented at The Server Side Java Symposium in Barcelona 2007 and NLJUG JFall 2007, both times with excellent attendance and feedback.
Prerequisites: Attendees should be confident in Java SE and should have ideally worked a bit with threads before. The talk does have something for everybody, but is mainly aimed at the intermediate to advanced developer. There are code samples and a short demonstration.
What you will get out of the talk: You will learn several tips that will help you in writing correct threaded code in Java.
Biography:
Dr Heinz Kabutz is best known for his creation of The Java Specialists' Newsletter, read in 115 countries by 30000 Java experts. In his newsletter, he examines advanced aspects of Java that have helped Java developers around the world to produce better code. As someone remarked on the Sun website: "Heinz Kabutz is a hero in the Java Developer Community. His newsletters have saved companies millions by helping bugeoning and experienced programmers deliver high quality products."
In order to fund the newsletter, Heinz writes Java code on contract and runs seminars. His latest creation, the Java Specialist Master Course, examines ten areas of advanced Java. It is one of the only courses specifically aimed at the seasoned Java professional.
Heinz was invited to speak at several Sun Tech Days events: Johannesburg 2006, Athens 2007, London 2007 and Frankfurt 2007. He is a regular speaker at Java User Groups such as JavaPolis, JavaZone, JFall and JHUG. In addition, he has spoken several times at the Server Side conferences in USA and Europe.
Heinz was recently interviewed on the Sun Website: http://java.sun.com/developer/technicalArticles/Interviews/community/kabutz_qa.html
// October General Meeting: 6pm Thurs. Oct 4 NYPC Rm 550 New Yorker Hotel (34th and 8th Ave)
Speaker:
Owen Taylor, Senior Director - Worldwide Technical Communications, GigaSpaces Technologies
Topic: "No more hops! - towards a linearly scalable application infrastructure."
This talk focuses on the architecture and the patterns implemented behind the scenes that enable the GigaSpaces XAP (ZAP) platform to scale linearly and still provide a rich and fault-tolerant programming model.
Java Audiences:
Learn how to leverage the simplicity and consistency of Spring and achieve the scalability of Google. Understand the programming paradigm known as SBA and Discover what the power of Transparent Partitioning and Colocation can do for applications ranging from Logistics to Order Processing to Algorithmic Trading.
Speaker Bio: As Sr. Director, Worldwide Technical Communications with GigaSpaces Technologies Inc, Owen translates the new architectural concepts and technical capabilities of space-based solutions into accessible formats so that technologists can adapt them rapidly into their environments and gain their maximum benefit. Owens' areas of expertise include J2EE design patterns and performance tuning of J2EE applications. Prior to GigaSpaces, Owen worked as Principal J2EE Product Specialist with Identify Software. Before that Owen acted as Senior Enterprise Architect with The Middleware Company where he specialized in B2B, EJB and J2EE training and consulting with a special emphasis on webMethods B2B server and, BEA WebLogic Servers. Owen has over the years delivered architecture consulting, mentoring and training to dozens of companies and advised them on how to best architect new applications ranging from e-commerce to stock-trading. Many of his engagements involved developing application prototypes on-site. Prior to The Middleware-Company, Owen was Senior Consultant and Partner in The New Customware Company, where his duties mirrored almost exactly those he executed with the Middleware Company. Prior to CustomWare, Owen was Senior Consultant and Instructor in the Professional Services organization at Inprise (Borland) (an EJB/J2EE & CORBA vendor), where he provided consulting and mentoring to customers in not only building large applications with EJB/J2EE and CORBA, but also specifically on the instrumentation, monitoring and management of applications developed using these technologies.
- door prizes! -
September General Meeting: Thursday, Sept 13, 6:00-9pm (Note: 2nd Thursday in Sept)
Speaker: Inyoung Cho from Sun Microsystems
Topic: Java Scripting: Java FX/Script and JRuby ->slides
<-The Java Platform supports multiple language solutions including scripting and dynamic languages. This session will offer a brief technical overview of scripting in the Java language and summarize the scripting features in Java Platform, Standard Edition 6 (Java SE 6), and exposes the audience to the Java FX script technology, and JRuby.
The Java FX Script is designed to deliver secure, interactive content, applications, and services that run on a variety of clients. To simplify and speed the creation and deployment of high-impact content for a wide range of devices, Sun announced JavaFX, a new family of products based on Java technology designed to enable consistent user experiences, from desktop to mobile device to set-top box to Blu-ray Disc. JavaFX Script is actually a declarative Java scripting language with static typing for good IDE support and compile-time error reporting (unlike JavaScript...), type-inference, declarative syntax, and automatic data-binding with full support for 2D graphics and standard Swing components as well as declarative animation. You can also import java classes, create new Java objects, call their methods, and implement Java interfaces. In Java FX Script section, we'll look at what is in JavaFX Script, how to use it and with examples and demos.
JRuby is an implementation of the Ruby programming language targeted at the Virtual Machine for the Java platform (JVM platform). Ruby is a dynamically typed object-oriented language with support for blocks, continuations, and all the usual OO trimmings. In JRuby section, we'll show you how to apply Ruby on the JVM software to common use cases, and projects that utilize JRuby and demonstrates the most compelling capabilities offered when Ruby and Java technology work together.
Speaker Bio:
Inyoung Cho is a Java Technology Evangelist at Sun Microsystems specialized in Java and Web services technology. After joining Sun in 1995, Inyoung was working as a Java platform licensees engineer in porting, adopting and deploying J2ME, J2SE and J2EE technology. She also worked as a Java technology consultant role helping Sun customers to architect Java software solutions. Prior to working Java land, she has worked on the Solaris Operating systems migration projects. She worked in various sun locations including US, Japan, Korea, and Canada. In previous positions, Inyoung worked at Nortel in the role of senior software engineer, developing the network management software for digital switching products, as well as high speed optical Transmission network elements. Inyoung has a BS in Computer Science from the University of Toronto.
August General Meeting: First Thursday, August 2 6:30pm
(no rsvp required but seating is limited)
Location: NYPC (New Yorker Hotel - 34th and 8th Ave 5th floor)
Topic: Getting Started with JPA using Hibernate 3
slides
and source code presented and source code not presentedSpeaker: Reza Rahman
Bio:
Reza Rahman is the chief architect at Tripod Technologies, an IT solutions company focusing on Java EE in the Baltimore-NYC corridor. He is the co-author of "EJB 3 in Action" from Manning Publishing. Reza has been working with Java EE since its inception in the mid-nineties. He has developed enterprise systems in the publishing, financial, telecommunications and manufacturing industries. Reza has been fortunate to have worked with both EJB and Spring/Hibernate. He coordinates the Philadelphia JBoss User Group.
Description:
The Java Persistence API (JPA) aims to be the de-facto standard for ORM based persistence. Hibernate 3 is one of the earliest and most popular ORM tools implementing the JPA standard. This session is a hands-on introduction to JPA using Hibernate 3.
During the course of this session, we will configure Hibernate 3 from the ground up to work with JPA in a standalone application, solve a realistic persistence problem step-by-step and explore some of the key features of JPA along the way. We will explore basic annotation-driven mapping, generating keys, mapping relations, performing basic persistence operations and forming complex queries using the Java Persistence Query Language (JPQL).
You are encouraged, but not required to bring your laptop and code along throughout the session. Please see the following prerequisites to install before the meeting
-some of the door prizes are courtesy of Sun Microsystems (books, t-shirts and a backpack!)-
July General Meeting: Tuesday June 26 (not Thursday July 5)
Location: Microsoft, 1290 Avenue of the Americas, 6th floor)
Topic: Why Projects Fail
--- slides now available at http://www.stellman-greene.com
- thanks Andrew and Jennifer ---Special Event: Joint meeting with the New York City Chapter of the International Association of Software Architects (IASA
).Topic: Why Projects Fail Speakers: Andrew Stellman and Jennifer Greene
Publications:
Applied Software Project Management
Head First PMP: A Brain-Friendly Guide to Passing the Project Management Professional Exam
.Bio:
Andrew Stellman
, despite being raised a New Yorker, has lived in Pittsburgh twice. The first time was when he graduated from Carnegie Mellon’s School of Computer Science, and then again when he and Jenny were starting their consulting business and writing their first project management book for O’Reilly. When he moved back to his hometown, his first job after college was as a programmer at EMI-Capitol Records—which actually made sense, since he went to LaGuardia High School of Music and Art and the Performing Arts to study cello and jazz bass guitar. He met his coauthor, Jennifer Greene, when they worked together at the same financial software company, where he was managing a team of programmers. He’s since managed various teams of software engineers and requirements analysts, and led process improvement efforts.Jennifer Greene
studied philosophy in college but, like everyone else in the field, couldn’t find a job doing it. Luckily, she’s a great software tester, so she started out doing it at an online service, and that’s the first time she really got a good sense of what project management was. She moved to New York in 1998 to test software at a financial software company. She managed a team of testers at a really cool startup that did artificial intelligence and natural language processing. Since then, she’s managed large teams of programmers, testers, designers, architects, and other engineers on lots of projects, and she’s done a whole bunch of procurement management.Special Note:
Andrew and Jennifer are currently working on "Head First C#".
It's expected to be one of the biggest O'Reilly releases in 4th quarter 2007.
There were good door prizes (everyone got a book)
May monthly general meeting - Monday April 30, 6:30-9pm
Speaker: Elliotte Rusty Harold
Bio: Elliotte Rusty Harold, adjunct professor of computer science at Polytechnic University in Brooklyn, author of numerous books on Java and XML. His Java news website: http://www.cafeaulait.org
and blog: http://cafe.elharo.comTopic: Java 7 and Beyond
2007 will go down in history as the year Sun Microsystems gave up the reins of the Java platform, releasing it under an open source license to the Java developer community. In this talk Java developer Elliotte Rusty Harold predicts new directions for the Java platform, in everything from scripting to bug fixing to new syntax. We'll talk about various proposals for both the language and libraries including closures, type inference, I/O, and more.
thanks to all who came, especially to our speaker and for posting the presentation at his cafeaulait.org website: http://www.cafeaulait.org/slides/nycjava/java7/Java_7_and_Beyond.html
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