Tuesday May 05, 2015

Improving the Performance of Java EE Applications

In a recent article for Java Magazine, Josh Juneau makes a strong case for incorporating performance tuning into the development lifecycle. In addition to preventing 'nightmare' scenarios in which the application development team must make critical performance tuning changes directly to a live production environment while 'under the gun,' proactively tuning applications for performance before they are released to production can help you plan for user capacity. Also, because the top performance problems experienced with Java EE applications are often related to configuration and environment issues, proactive tuning can make troubleshooting easier by differentiating problems in the code from problems with configuration or the environment.

Josh provides valuable information about how to code for performance and tune the environment. In addition, he discusses how to use profiling tools, such as NetBeans profiler and Apache JMeter, to plan for capacity by forecasting how an application will perform in production under a normal or heavy load of users.

Finally, because further improvements can often be made to an application in production--even if you proactively tune during development--Josh provides some tips for reactive performance tuning. 

Wednesday Apr 29, 2015

Lessons Learned from UML NetBeans Plugin Development

By Guest Blogger Zoran Sevarac

The Open Source Software Development Center at University of Belgrade has released a new version of a UML plugin for NetBeans called easyUML. This plugin was created to facilitate the use of UML tools for teaching software design, but it is also a handy tool for developers. It helps developers with commonly used features by adding an easy-to-use UI.

 EasyUML supports class diagrams and the following features:
Drawing class diagrams
Generation of Java code from class diagrams
Reverse engineering from Java code to class diagrams

The easyUML plugin is available for installation directly from NetBeans IDE Update Center, or as a  download from NetBeans Plugin portal.
Complete source code is available from SVN repository on java.net

The developers who participated in this project were software engineering students from University of Belgrade. This is a very good model for collaboration between universities and open source projects which can help overcome the gap between academia and requirements in the software industry. 
Quick demo and installation instructions are available in this YouTube video

Pictures below show the main application window with all its components common to IDE: diagram view, palette, properties view, explorer view and project view.

Monday Mar 02, 2015

New Java Champion: Sven Reimers

Congratulations to the new Java Champion Sven Reimers!

Sven is based near Lake Constance in Germany, and works as a systems engineer at Airbus Defence and Space. He has more than 15 years of experience building complex software systems, and more than 14 years experience with Java. In 2009, Sven was the winner of the Duke's Choice Award in the Network Solutions category for ND SatCom Satellite Communication Management Software.

Besides his day job, his contributions to NetBeans got him elected to the NetBeans Dream Team in 2008. He is a community leader for NetBeans, a founder of the Java User Group in Bodensee and a contributor to OpenJFX. Sven has been very active as a public speaker at multiple conferences, events, JUGs all over the world. e.g. JavaOne (SF/Brasil), SvJUG, JayDay, NetBeans Days, JFokus, and JCrete.

He is an active contributor and participant at the Hackergarten events. In the interview below, Heather VanCura interviews Sven and Andres Almiray at Devoxx 2014 

Java Champions are an exclusive group of passionate Java technology and community leaders who are community-nominated and selected under a project sponsored by Oracle. Learn more about Java Champions.

Tuesday Feb 17, 2015

Free Open Source Tools for Maven, HTML5, IoT, and Java EE

Are you struggling with being productive in Maven, HTML5 frameworks such as AngularJS, IoT hardware such as the Raspberry Pi, or Java EE? Do you want free, easy to use, out-of-the-box tools for quickly and efficiently developing all kinds of applications? You really need to give the NetBeans IDE a whirl! At the next Virtual Technology Summit,  OTN will show you the latest enhancements and cool features of the free, open-source NetBeans IDE, which are used around the world, from engineers at Boeing and NASA to Java architects such as James Gosling and Stuart Marks! This is one of four Java sessions of the OTN Virtual Technology Day. Other topics include JavaScript on the JVM, Java Application Monitoring and Java Wearables.

If you haven't looked at the NetBeans IDE lately, you'll be blown away by the fast speed and performance enhancements. If you are completely new to the NetBeans IDE, see how easy it is to get started and be productive. For example, did you know NetBeans can refactor all your code from Java SE 7 to Java SE 8? See how in this session, lead by NetBeans expert Geertjan Wielenga.

Virtual Technology Summits (VTS) are interactive, online events, sponsored by the Oracle Technology Network (OTN). VTSs are free, but you must register:

 • EMEA – 25 February  - 9:00 to 13:00 BST  REGISTER

APAC – 4 March  –  9:30 to 13:30 IST  REGISTER

Each OTN VTS features four technical tracks, each with a unique focus on specific tools, technologies, and tips: Java, Database, Middleware and Systems. Registration allows you to attend any session on any track. We'll kick off the VTS with Java Community Update by Tori Wieldt. There will be places to hang out and meet other attendees between sessions. Please join us!

Sunday Sep 28, 2014

User Group Sunday Kicks Things Off

By Guest Blogger Bob Larsen, Java.net Editor

JavaOne officially started today with User Group Sunday, and, as usual, gave a strong showing out of the gate with some tremendous sessions.  

User Group Sunday sessions targeted both current and future Java User Group leaders, including “Starting a JUGgernaut: How to Start and Rapidly Grow Your JUG”  and “Tools for the Day-to-Day of JUG Management.”  

There was also a wide selection of technical sessions including introductions to new features released in Java 8, demonstrations of exciting ways Java is currently being used, and panel sessions that allowed attendees to have their questions answered by the rock stars of the Java community.

User Group Sunday took place concurrently with Netbeans Day.  Community members shared the interesting and myriad ways in which they are using both the Netbeans IDE and the Netbeans platform.  They also shared tricks and tools to help make Java developers more productive and even to teach the next generation of Java developers.

Perhaps the most alarming announcement came when Juggy, the Java Finch, unveiled a prototype RoboJuggy, which is controlled by a Raspberry Pi running Java, of course.  Juggy plans to build an army of RoboJuggies to “spread Java everywhere through world domination.”  Community leaders have opened diplomatic negotiations with Juggy to deescalate the situation.

Friday Sep 26, 2014

Join Community Events at JavaOne 2014

Once a year, the global Java community gathers on the Sunday before JavaOne at three community events. Glassfish and Java EE users join the Executive Panel and GlassFish Adoption Story and Deep Dive. NetBeans enthusiasts get together at the NetBeans Community Day, a whole day of panels. User group leaders and members attend the user group forum. Join them this year on Sunday, September 28 at Moscone South [Read More]

Tuesday Sep 23, 2014

Join Community Events at JavaOne 2014

Once a year, the global Java community gathers on the Sunday before JavaOne at three community events. Glassfish and Java EE users join the Executive Panel and GlassFish Adoption Story and Deep Dive. NetBeans enthusiasts get together at the NetBeans Community Day, a whole day of panels. User group leaders and members attend the user group forum. Join them this year on Sunday, September 28 at Moscone South 

[Read More]

Monday Sep 22, 2014

Join NetBeans Community at JavaOne

Geertjan Wielenga is a NetBeans product manager working at Oracle, focused on Java and HTML5 development with NetBeans IDE and the NetBeans Platform. He is a Java technology enthusiast primarily interested in Java desktop technologies—in particular, application development on the NetBeans Platform. Wielenga tweets at @NetBeans and @geertjanw and blogs at https://blogs.oracle.com/geertjan/ 

Q: Tell us about NetBeans Community Day

Wielenga: NetBeans Community Day features the NetBeans community from around the world. Thirty speakers will share their expertise in six panels on popular NetBeans topics. The first theme is about the NetBeans partner activities. On the panel, Anton Arhipov from ZeroTurnaround, Ruslan Synytsky from Jelastic, and Matthew Tahvonen from Vaadim will present their new NetBeans plugins. Bruce Shimel from Boeing will explain the use of NetBeans in their open source community. 

[Read More]

Friday Sep 19, 2014

Robots, NetBeans IDE, and Raspberry Pi with James Gosling

James Gosling is now chief software architect of the Wave Glider, the flagship product at Liquid Robotics. The Wave Glider is a self-propelled, autonomous marine robot that collects and transmits ocean data. The Wave Glider will be on display exclusively at the Java Hub in the JavaOne exhibit hall during the entire conference. 

Since Gosling started at Liquid Robotics, he has re-architected the onboard software and refined a data-as-a-service cloud to provide direct, real-time access to ocean information. Java, which he invented, has played an increasing role in ocean data transmission and analysis.  

“Being able to debug and profile robots out at sea is a truly life-altering experience,” Gosling explains. He uses a set of tools—consisting of editors, debuggers, and profilers—that are part of the NetBeans IDE. At the JavaOne 2014 NetBeans Community Day, he will present the session “James Gosling, Robots, the Raspberry Pi, and Small Devices” [UGF8907] on Sunday, September 28. He will also present “Debugging and Profiling Robots with James Gosling” [CON6699] on Wednesday, October 1. Geertjan Wielenga, Mark Heckler, José Pereda, Johannes Weigend, Shai Almog and Jens Deters will join him to discuss those two topics. 

Join him as he closes out the JavaOne Community keynote with a fun, historical perspective of the genesis of Java, and a T-shirt toss! The Community Keynote will be held in the Marriott Marquis, Salon 7/8/9, on Thursday, October 2, 2014

Thursday Jul 31, 2014

User Groups at JavaOne

User group leaders from around the world meet once a year at JavaOne. Each year, they organize the Forum meeting the Sunday before JavaOne. Speakers and topics are vetted by community. Anyone attending JavaOne whether they belong to a user group or not are invited to those sessions. Make sure you arrive on time for the Forum on Sunday. It starts at 8:00am at Moscone West. Among the topics this year are NetBeans community and tools, Java EE and Glassfish update, lightning talks about productivity, Java tools for Maven and Java EE, free Java tools and how to teach Java. And you don't want to miss James Gosling. He will present his latest work on the Raspberry Pi, Robots and Small Devices. If you have not registered already.

Register by tomorrow Friday August 1, 2014 and take advantage of the Early Bird rate. It is a US $400 saving on registration!  

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