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Planet NetBeans is an aggregation of NetBeans related musings from all over the Blogosphere.
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Geertjan's Blog - January 23, 2015 10:35 PM
Processing Output on the Yeoman Command Line

Here's where things are right now for Yeoman in NetBeans IDE. First, as pointed out yesterday, just like Maven projects from archetypes, you can create HTML5 applications from Yeoman:

When Next is clicked above, all the Yeoman generators that have been installed are shown, exactly as when you run "yo --help" on the command line:

(A feature I'd like to have would be to either have hardcoded or somehow generated the Yeoman generators that are listed here and then to let the user select the ones they'd like to have installed for them via NetBeans.)

(Also need to work more on the responses required from the generators. Right now, Enter is clicked automatically and the default generator is run.)

When Next is clicked above, the name of the selected generator determines the suggested project name of the application that will be generated.

When Finish is clicked, the generator is run in the location specified above, with the result shown below.

The next step is for me to add an 'nbproject' folder in there, with the correct content, so that the application will be recognized as a NetBeans HTML5 application. And then it will automatically be opened into NetBeans IDE, i.e., as soon as it has been generated via the steps above!

Geertjan's Blog - January 22, 2015 04:19 PM
Parsing the Yeoman Command Line

The Yeoman command line, when you run "yo --help", shows you the available Yeoman generators that you have installed:

Integrating Yeoman into NetBeans IDE means that you want to let the user make use of those generators from within a New Project wizard, i.e., as discussed in this blog yesterday. So, here you go, thanks to Steve Souza (sitting on the couch at Concerto in Amsterdam next to me, great coffee and free Wifi hurray) and me:

The code for this is here on GitHub: YeomanHelpParser.java. You'll see the Yo executable is hardcoded, that's one thing I'll be working on, via a new item in the Options window.

Now that the above is done, things are looking pretty good. The user will select one of the installed generators (there'll also be a list of available generators that haven't been installed yet), click Next, and then the "yo" command will be called from NetBeans, the app will be generated, and will open automatically as an HTML5 project (from existing sources) in NetBeans. (JBoss Forge and LazyBones support for NetBeans should be implemented in a similar way.)

Adam Bien - January 22, 2015 12:49 PM
Listing Docker Containers with Nashorn

Nashorn is a convenient REST-service client:


#!/usr/bin/jjs -fv
var host = "DOCKER_HOST"
var dockerUri="http://${host}:5555/containers/json";
var command = "curl ${dockerUri}";
$EXEC(command);
var containers = JSON.parse($OUT);
for each(container in containers){
	print("${container.Image} 	 ${container.Names[0]}	 ${container.Status}");
}

See also: https://github.com/AdamBien/watchdock

See you at Java EE Workshops at Munich Airport, Terminal 2 or Virtual Dedicated Workshops / consulting


Real World Java EE Workshops [Airport Munich]>

APIDesign - Blogs - January 22, 2015 09:52 AM
Can Real Threads be Brought to JavaScript?

What it would take to bring Java like threads into JavaScript (via Bck2Brwsr VM)? Here is my [[1]]!

--JaroslavTulach 09:52, 22 January 2015 (UTC)

Geertjan's Blog - January 21, 2015 08:57 AM
How to Implement Yeoman in NetBeans IDE

I've been looking into what it would take to support Yeoman in NetBeans IDE. My initial idea was to use the dynamic actions mechanism (see it on YouTube here), to create something like the "External Tools" functionality in IntelliJ IDEA, where you can register Yeoman configurations as external tools, which means each configuration gets a keyboard shortcut, menu item, and toolbar button for invoking the configuration.

I showed the above approach to Ralph Ruijs yesterday and his immediate reaction was along the lines of: "That's just weird. If I want to create a new project via Yeoman, I'd expect to be able to go to the New Project wizard and have access to all the available Yeoman commands via a Yeoman category." Of course, it's a pity I can't use the dynamic actions approach but I agree that it doesn't apply so well in this context. So then I spent some time working on "dynamic project templates" instead of "dynamic actions", which is doable, but even more difficult.

And then... I thought about how Maven archetypes are suppored in NetBeans IDE:

When you want to create a Maven project from an archetype from the on-line Maven repository, you go to the above project template in the New Project wizard. When you click Next above, you see this dialog:

What that means for Yeoman (and for JBoss Forge, I believe) is that, assuming one wants to be consistent with the existing NetBeans IDE approaches, is to create an entry point like this:

When Next is clicked above, a dialog should appear similar to the second step of the Maven archetype wizard. At that point, "yo -- help" should be run (same as is done for grails and griffon in NetBeans IDE), which will then give access to the available generators, which should be made available in a drop-down list, which the user can then select, at which stage the generators are executed.

In other words, that means (1) no dynamic actions are needed and (2) no dynamic project templates are needed. Instead, a much simpler solution based on an existing NetBeans pattern is applicable here and, as you can see above, will provide a very clear entrypoint into Yeoman from within NetBeans IDE.

NetBeans Zone - The social network for developers - January 20, 2015 09:00 PM
Free Virtual Technology Summit with NetBeans Session

The Oracle Technology Network (OTN) is excited to invite you to the Virtual Technology Summit Series.  Four times a year come and join us to learn first hand from Oracle ACEs, Java Champions, and Oracle product experts, as they share their insight and expertise on using Oracle technologies to meet today’s IT challenges. Four main content areas covered will be Database, Java, Middleware and...

Geertjan's Blog - January 20, 2015 08:48 PM
Free: Virtual Technology Summit by Oracle Technology Network

The Oracle Technology Network (OTN) is excited to invite you to the Virtual Technology Summit Series.  Four times a year come and join us to learn first hand from Oracle ACEs, Java Champions, and Oracle product experts, as they share their insight and expertise on using Oracle technologies to meet today’s IT challenges. Four main content areas covered will be Database, Java, Middleware and Systems.  

Are you struggling in being productive with Maven, HTML5 frameworks such as AngularJS, IoT hardware such as the Raspberry Pi, and 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 NetBeans a whirl!

In the "Free Open Source Tools for Maven, HTML5, IoT, and Java EE" session, during the upcoming free Virtual Technology Summit by OTN (nice and simple URL http://oracle.com/otnvts) we'll 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!

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.

Tip: The full agenda is available here and notice that the session described above is in the Java Content Area: https://community.oracle.com/docs/DOC-894285

The sessions are prerecorded, while the speakers and other experts will be available live, to answer questions. To give a sneak peak at what the site will look like, take a look at these two screenshots from the session described above.

Click below to register. Pick a date and time that matches your location:

  • Americas February 11th - 9am to 12:30 PT - click here.
  • EMEA February 25th - 9am to 12:30 GMT - click here.
  • APAC March 4th - 9:30am to 1pm IST - click here.

Spread the news to members of your JUGs, colleagues at your office, and fellow students at your schools, colleges, and universities!

Adam Bien - January 20, 2015 04:35 AM
Amazon AWS Became Lightweight--Support For Java 8 and GlassFish 4.1 Available

Amazon AWS supports GlassFish 4.1 on Java 8. Now you can focus on business logic and push skinny WARs to the cloud.

Big thanks to Robert Herschke for the hint.

See you at Java EE Workshops at Munich Airport, Terminal 2 or Virtual Dedicated Workshops / consulting


Real World Java EE Workshops [Airport Munich]>

Geertjan's Blog - January 19, 2015 08:24 AM
Gulp for NetBeans IDE (Part 2)

Turns out there was no point in getting started making Gulp support for NetBeans IDE myself, since it's already part of daily development builds, and much better than my support was going to be.

For details on this and all the other awesome new features that are already available, go here:

wiki.netbeans.org/NewAndNoteworthyNB81 

Geertjan's Blog - January 18, 2015 08:00 AM
Gulp for NetBeans IDE (Part 1)

The first part of Gulp support is complete. When the plugin is installed, the 'gulpfile.js', if it exists, is parsed and all the Gulp tasks are shown as child nodes of a new Gulp node in the Projects window:

Creating the above was trivial. Initially I got into all kinds of problems when I started by creating a new file type for Gulp files. But the solution ended up being much simpler than that. Using the NetBeans Project Type Extension Tutorial, I registered a new org.netbeans.spi.project.ui.support.NodeFactory for the org-netbeans-modules-web-clientproject project type.

All the code is here:

github.com/GeertjanWielenga/Gulp

The next step I'm working on is being able to run those Gulp tasks from within NetBeans. Once that's done I'll publish the plugin in the NetBeans Plugin Portal.

Adam Bien - January 17, 2015 02:18 PM
Java is #2 at the Tiobe Community Index

According to the TIOBE Community Index Java is #2, C is #1 and JavaScript is #7 and the programming language of 2014.

So if you learned C at school and are using JavaEE at the backend, HTML 5 + JavaScript at the frontend you are one of the cool kids :-)

Subscribe to airhacksnews.com newsletter.


Real World Java EE Workshops [Airport Munich]>

Geertjan's Blog - January 17, 2015 08:06 AM
Knockout.js in 2 Minutes (Part 3)

Instead of hardcoding the values, let's read them from a JSON file, "courses.json", which I have in the same folder as the "index.html" file:

[
    {
        "name": "John",
        "courses": [{"title":"History"},{"title":"Geography"}]
        
    },
    {
        "name": "Bob",
        "courses": [{"title":"Science"}]
        
    },
    {
        "name": "Susan",
        "courses": [{"title":"Math"},{"title":"English"}]
        
    }
]

Code:

					

Geertjan's Blog - January 16, 2015 03:00 PM
Knockout.js in 2 Minutes (Part 2)

If you liked part 1, you should squeeze in another 2 minutes and watch part 2!

Code:

<script src="js/libs/knockout/knockout-min.js" type="text/javascript"></script>

Name: <input data-bind="value: name, valueUpdate:'afterkeydown'" />

<h3>
    Hello, <span data-bind="text: name"></span>.
</h3>
<ul data-bind="foreach: courses">
    <li><span data-bind="text: title"></span></li>
</ul>

<script type="text/javascript">
    
    var viewModel = {
        name: ko.observable("John"),  
        courses: ko.observableArray([{"title":"History"},{"title":"Geography"}])  
    };
    ko.applyBindings(viewModel);
    
</script>

Geertjan's Blog - January 15, 2015 08:00 AM
Knockout.js in 2 Minutes (Part 1)

Scratching your head over Knockout.js? Spend two minutes getting your feet wet here:

Code:

<script src="js/libs/knockout/knockout-min.js" type="text/javascript"></script>

Name: <input data-bind="value: name, valueUpdate:'afterkeydown'" />

<h3>
    Hello, <span data-bind="text: name"></span>.
</h3>

<script type="text/javascript">
    
    var viewModel = {
        name: ko.observable('John')  
    };
    ko.applyBindings(viewModel);
    
</script>

Adam Bien - January 15, 2015 07:54 AM
10th Airhacks.tv Q & A Uploaded--Killer Servers, Complex JSON, EARs and Modularization

14+ questions answered in 37 minutes:

Subscribe to airhacksnews.com and receive updates about my upcoming "airhacks" events, new workshops, opensource projects and publications.

See airhacks.tv for past episodes.

See you at Java EE Workshops at Munich Airport, Terminal 2 or Virtual Dedicated Workshops / consulting

See also other screencasts at: http://tv.adam-bien.com or subscribe to http://www.youtube.com/user/bienadam.


Real World Java EE Workshops [Airport Munich]>

Geertjan's Blog - January 14, 2015 01:36 PM
NetBeans Day in the Netherlands: 12 February 2015

During NetBeans Day 2014 in San Francisco, mention was made of more NetBeans Days being planned over the coming months. NetBeans Day Germany was held in Munich during December, hosted by Oracle, see the pic below, and read the report here.

In the Netherlands, the equivalent event to the above will be held on 12 February, i.e., less than a month from now, again hosted by Oracle:

Fill in the registration form and join the NetBeans community at the event:

https://pidome.wordpress.com/netbeans-day-februari-12th-2015-the-netherlands/

Or, even better, if you're not available to be there, because you're in some other country, set up a NetBeans Day yourself! Drop me an e-mail (geertjan dot wielenga at oracle dot com) and the NetBeans team will help set up the day, contact an Oracle office if needed for the location and food, and assist in getting speakers for your NetBeans Day!

Adam Bien - January 14, 2015 08:05 AM
JSON-P and JAX-RS 2 Client Maven Dependencies For RESTEasy

RESTEasy is a JAX-RS 2.0 implementation and comes with JAX-RS 2.0 client implementation / provider.

To use RESTEasy as a JAX-RS 2.0 client implementation (e.g. for system testing) you will have to declare the following dependencies in pom.xml:


<dependency>
    <groupId>org.jboss.resteasy</groupId>
    <artifactId>resteasy-client</artifactId>
    <version>3.0.10.Final</version>
</dependency>
<dependency>
	<groupId>org.jboss.resteasy</groupId>
    <artifactId>resteasy-json-p-provider</artifactId>
    <version>3.0.10.Final</version>
</dependency>

The choice of the JAX-RS implementation does not have any effect at the code--it remains implementation independent:

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;

@Test
public void oracle() {
	Client client = ClientBuilder.newClient();
	String content = client.target("http://www.oracle.com/technetwork/java/index.html").
			request().
			get(String.class);
	assertNotNull(content);
	assertTrue(content.contains("java"));
}

See you at Java EE Workshops at Munich Airport, Terminal 2 or Virtual Dedicated Workshops / consulting


Real World Java EE Workshops [Airport Munich]>

Geertjan's Blog - January 13, 2015 08:00 AM
Free: Learn NetBeans on Udemy

Free! An excellent course for anyone working with NetBeans IDE, covers all the basics, as well as many advanced features. It is unbelievable that a course this good is available for free, make use of the opportunity today!

Click the image above or click here to get directly to the site to get started with the course!

Geertjan's Blog - January 12, 2015 12:28 PM
Free: Learn Java with NetBeans on Android

Free! Start learning Java and NetBeans on your Android phone today. A step by step guide is available that can be installed on Android, with many instructions and a thorough guide to Java with many illustrations and insights into NetBeans IDE:

Go here or click the link above and happy learning!

https://play.google.com/store/apps/details?id=net.samaysoftware.javanetbeans

APIDesign - Blogs - January 12, 2015 09:27 AM
Bck2Brwsr @ 0.13 Released

Bugfix release of Bck2Brwsr 0.13 is out and it powers another classical game: fifteen. Give it a try!

--JaroslavTulach 09:27, 12 January 2015 (UTC)

Michael's blog » NetBeans - January 11, 2015 09:53 PM
Select NetBeans user dir during installation

Some years ago, I suggested to add an option during install to select NetBeans UserDir and CacheDir [1]. This still seems to be an issue for other people. Take a look at the comments on my former blog post [2]. … Continue reading

Adam Bien - January 11, 2015 07:33 AM
Transactions, Scopes, Single Page Apps, Killer Servers, Complex JSON, Modularization Again--Questions For the 10th Airhacks Questions and Answers

Questions for the first 2015 airhacks.tv, but late show at Januar, 12th, 6 PM CET:

  1. Year 2014 Review and Announcements
  2. Introducing project headlands
  3. What are your overall “Java EE” favorites? (peter, via email)
  4. Which technology stack would you prefer to choose for an interactive single page mobile app? As JavaFX is not supported by Apple, I am currently experimenting with a hybrid web app technology stack: GWT, MGWT, PhoneGap. I evaluated Vaadin for this purpose, but integrating custom widgets into their complex architecture seems to be a real pain. Something like Java EE + Primefaces seems not be the first candidate for a single page app to me. What would your approach be? (Jens)
  5. What application server are you currently using for your new Java EE7 projects? Would you recommend GlassFish 4.1 despite the lack of commercial support, or is better to go with WildFly 8.2.0? Antonio
  6. What is your opinion about Project Avatar (https://avatar.java.net/)? WurstFromHell
  7. Portable error reporting with JAX-RS 2.0 Benjamin
  8. How to map complex object strategies to JSON? Remko
  9. I would like to know what would be the best approach for modular JSF applications.

    Most of the existing examples consist in creating a jar, for web applications, where the resources are located in the META-INF folder, having unique named properties files, and using CDI to announce the module existences henry
  10. What about building enterprise systems made of multiple ears, whereas each ear is build as you described? Still, there are many issues not covered yet by appserver providers and JEE.

    (1) One example is that remote ejb proxies are not automatically recovered after deployment - custom proxy factories need to be implemented.

    (3) Another one is the communication between wars … there is actually no kind web client project type available to provide an API for JSF apps - needed to integrate apps at different WARs (for EJB jars we JEE provides client projects…).

    (3) Another aspect … how to develop single EARs with one or more teams/team members? How to hide parts of sources to subcontractors, but ensure deployability?

    From my perspective, development of integrated service landscapes with JEE is still a challenging and not that easy as many hello world example show … that’s why - hope to see more of really real-world enterprise patterns here and also provided by next JEE versions! Andreas Freier
  11. I would like to have something like:

    @Inject @Any private Instance providers;

    Where ‘ServiceRemote’ is a @Remote interface, and there are multiple implementations deployed in different EARs.Chris
  12. I was looking at the Arunja implementation of TransactionSynchronizationRegistry in JBoss and get/putResource works by accessing the resource from the transaction object. You state that this mechanism is independent of TLS, but how does the container get the TSR in the first place, so that it can inject it, if it doesn’t do it using TLS? Ant
  13. Today I saw some code were a @SessionScoped bean was injected into a @Stateless

    EJB.Up-to-now my understanding was that such a constellation will lead to
    unpredictable behavior, since the stateless EJB is not stateless anymore.After googling that topic I figured out that may people stating, such a
    constellation is absolutely valid.I can’t believe that’s true. How is this working?

    Do you have an advice for me? Juergen
  14. Can you please explain how to configure hazelcast as a distributed cache on multiple servers? Eyal

Do you have any additional questions? Ask now, or wait a month :-)

You can ask additional questions live, during the show using the chat: http://www.ustream.tv/channel/adambien, twitter (hashtag "#airhacks") or (the best option): using channel ##airhacks on http://freenode.net.

See also other screencasts at: http://tv.adam-bien.com or subscribe to http://www.youtube.com/user/bienadam.

See you at Java EE Workshops at Munich Airport, Terminal 2 or on demand and in a location very near you: airhacks.io!


Real World Java EE Workshops [Airport Munich]>

Adam Bien - January 09, 2015 08:33 AM
JCache / JSR-107 RESTification--Project Headlands v0.0.1

Project Headlands is a Java EE 7 / Java 8 WAR which exposes the JCache API via JAX-RS (REST). See sample API scenario. Headlands was tested on WildFly and GlassFish.

Headlands uses hazelcast.org as default JCache SPI. The Reference Implementation could be used as well.

Because out-of-the-box Headlands ships with hazelast, by deploying WARs on multiple servers you get a distributed cache / in-memory grid "for free".

Headlands is already used in production. We will also discuss headlands together with docker as one of the samples at the upcoming Airhacks: Java EE Microservices.


Real World Java EE Workshops [Airport Munich]>

Geertjan's Blog - January 09, 2015 08:00 AM
YouTube: Dynamic Actions in the NetBeans Platform

Sometimes you'd like your users to be able to create their own Actions at runtime, in addition to the Actions you may have predefined for them. Here's an example of how that would work, i.e., add new Actions and their Presenters to the User Directory, as shown here:

Geertjan's Blog - January 08, 2015 04:28 PM
Classpath for Python Projects in NetBeans IDE

I've mentioned in this blog a few times recently the strides being made in rejuvenating the NetBeans support for Python, most recently in YouTube: Code Completion for Python in NetBeans IDE 8.0.2.

The newest development in that regard is new support for registering libraries on the classpath of Python projects (click to enlarge the image):

The above new feature isn't available in binary form yet, it's still being worked on. For the current state of the NetBeans IDE 8.0.2 plugin for Python, which includes quite some features already, including basic code completion, go here:

http://plugins.netbeans.org/plugin/56795/python4netbeans802

And, if you're lucky enough to be attending NetBeans Day in the Netherlands (12 February 2015), you'll find there'll be a session where the new Python features for NetBeans IDE 8.0.2 will be shown. Sign up for that event here:

http://pidome.wordpress.com/netbeans-day-februari-12th-2015-the-netherlands/

Geertjan's Blog - January 07, 2015 07:54 PM
NetBeans Software for Explosive Ordnance Disposal & Clearance Divers

Operating from offices in Edinburgh, Scotland, and San Diego, California, SeeByte has achieved a position of leadership in the development of smart software for underwater vehicles, sensors and systems in both the Military and Oil & Gas sectors. SeeByte provides products and services to major government and commercial clients around the world and a number of these products are developed using the NetBeans Platform.

SeeTrack Military is the leading technology used by Explosive Ordnance Disposal (EOD) and Clearance Divers around the world, to achieve success in managing their off-board assets during dangerous and demanding missions. As a commercially available, equipment independent mission planning, monitoring and post-mission analysis tool, SeeTrack Military generates a single integrated picture of events from multiple sensors and platforms, providing actionable information and fast results when it matters most. Designed with the operator in mind, this unique system for rapid on-site analysis and fusion of sensor data has been effectively utilized within numerous military & security exercises, surveys and operations.

Adam Bien - January 06, 2015 04:46 PM
"Airhacks News" Mailing List

If you like to be notified about upcoming (airhacks) events (http://workshops.adam-bien.com, http://airhacks.tv, or some of my public speaking activities), subscribe to the:

It is trivial to unsubscribe :-)

See you at Java EE Workshops at Munich Airport, Terminal 2 or Virtual Dedicated Workshops / consulting


Real World Java EE Workshops [Airport Munich]>

APIDesign - Blogs - January 03, 2015 07:23 PM
Impossible. Part II.

Everybody understands threading is complex. Yet almost everyone believes that with good methodology it is possible to do threading right. Well, it is not. There is no theory to eliminate deadlocks. Achieving proper threading is impossible. Still people keep asking for it. When you tell them it is impossible, you may get fired. Just like me few years ago! Here is my story.

--JaroslavTulach 19:23, 3 January 2015 (UTC)


NetBeans Zone - The social network for developers - January 02, 2015 01:08 PM
Three Interesting Recipes from NetBeans IDE 8 Cookbook

What are some of the highlights of what you'll learn from NetBeans IDE 8 Cookbook, which was released last year?Tips, tricks, insights, and other highlights will be featured on a new Facebook site dedicated to the book:https://www.facebook.com/NetBeansCookbook  Three interesting recipes from the book are outlined below. Preview Text:  ...

APIDesign - Blogs - January 01, 2015 09:53 PM
Bck2Brwsr @ 0.12 Released

Bck2Brwsr 0.12 has been released. What is new?

Libraries can be pre-compiled and published as Maven artefacts (see Bck2BrwsrLibraries how to). The Knockout4Java Maven archetype has been modified to use the precompiled version of Bck2Brwsr rt. jar emulation library and HTML/Java APIs:

$ mvn archetype:generate \
  -DarchetypeGroupId=org.apidesign.html \
  -DarchetypeArtifactId=knockout4j-archetype \
  -DarchetypeVersion=1.1.2 \
  -Dbck2brwsr=true
# answer few questions...
$ cd nameofyourproject
# run on desktop
$ mvn process-classes exec:java
# run in a browser
$ mvn -Pbck2brwsr clean package bck2brwsr:show

Supporting Bck2BrwsrBlobURLs so one can display images available as in JAR resources.

Happy Year 2015 and please help me get Java Bck2Brwsr!

--JaroslavTulach 21:53, 1 January 2015 (UTC)