Develop Reference

How to configure Grails for Netbeans?

I am trying to configure Grails in Netbeans.
Grails version:3.2
Netbeans: 8.2
JDK: 1.8
OS: Windows 10
I have install and configured environment path and other stuffs. I can create and run project from the Command Prompt. But I can not create project from netbeans.
Warning |
Unrecognized flag: non-interactive.
Error |
Specify an application name or use --inplace to create an application in the current directory
This error is showing, to create project from Netbeans. I can run the created project though. I have already added Groovy plugin.
How can I solve this problem?

I don't think you are doing anything incorrectly. I have an environment very similar to yours (Grails version: 3.3.2, Netbeans: 8.2, JDK: 8u151, OS: Windows 10) and I see the same error: Specify an application name or use --inplace...
This is a known issue with NetBeans 8.2 that has already been bug reported; see Bug 258407 - Error when creating a Grails 3.1.x project. The problem has been confirmed to exist in Grails releases 3.1.0 up to 3.1.4, but I see the same issue in 3.3.2, and there is no fix for NetBeans 8.2.
However, I successfully created a Groovy/Grails application using JDK 8u151 with a DEV release of NetBeans which you can download from here: http://bits.netbeans.org/download/trunk/nightly/latest/
Note the caveat that comes with using DEV releases of NetBeans:
These builds are still under development and could contain defects
that lead to data loss. They are meant for evaluation of new features.
As always, be sure to back up your changes if you use these builds on
your production code.
As long as you can you can live with that situation, using a DEV release is your (only) solution for creating Grails 3.x applications in NetBeans.
One final point: unlike NetBeans 8.2, DEV releases of NetBeans support Java 9 as well as Java 8, but don't use Java 9 when creating a Groovy/Grails applications. It won't work for a completely unrelated reason.

I'm using Windows 8 and Grails 3.3.8, but the following worked for me:
Create the project using system command line (I used instructions in this page: how to create grails project through windows command promt).
Import the project to Netbeans 8.2 by clicking on File > Open Project... and selecting the project folder.

This solution works for me (Mac OS)
1) Open de console inside Netbeans
2) Navigate to your GRAILS_HOME/bin
3) Type grails create-app [YOUR_NAME_APP] --profile=web (rest-api, etc)
4) The project must be created at GRAILS_HOME/bin/[YOUR_NAME_APP]
5) Do not try to import into Netbeans instead of it Open the project
6) Start coding!
You can move the folder GRAILS_HOME/bin/[YOUR_NAME_APP] to the Netbeans workspace before open the project.

FYI, I am using netbeans 9 and grails 3.3.8 (dont use 3.3.9, its broken), and it works like a dream. I can create domain classes etc. from the menus in netbeans, run, debug etc. THe only thing I had to do was manually install the grails plugin for netbeans, and configure my grails paths etc. The answer on how to set this up is here: how to open a grails 3.3 app in netbeans 9?
The only thing I cant get to work (and its a bit of a show stopper), is multi-module projects (i.e. a grails app which depends on a grails plugin). I can run them, but netbeans does not recognise any of the imports so there is no code completion and it shows all files are having errors. What a shame, as appart from this, netbeans has very good grails support.
Note, I always create projects on the command line, e.g. "grails create-app myapp ...", then simply use the open project menu in netbeans and it instantly recognises them as grails.

Ensure you have gradle plugin installed for netbeans. Then go to File -> Open Project.
You should see the project shown by netbeans as a gradle project.

JavaFX on Android - Gradle can't find JDK

I'm trying to get JavaFX applications to run on Android by using the Dalvik JavaFX-Android SDK (provided by the JavaFX Android porting team). So I downloaded the samples provided by the JavaFX Android porting team and have been trying to run one of them on Android without much success.
Using Eclipse with the Gradle plugin I imported the "HelloWorldFxml" sample project. Then I ran the Gradle task "./gradlew androidInstall" on the project like the README file told me. But unfortunately the task cannot execute because Gradle cannot locate my JDK:
(source: forumbilder.se)
Even though my JAVA_HOME system variable is correctly set and I havn't had a problem with it before:
(source: forumbilder.se)
Anyone that can provide some insight as to how I can fix this?
Versions: Eclipse Luna Service Release 1a (4.4.1), Gradle 2.2, dalvik-sdk-8u40-ea3, Android SDK Build-tools 21.1.2, Android SDK Tools 24.0.2
Edit: The console output when running "gradlew androidinstall" on a sample project:

Even though the error message doesn't specify it, maybe it's looking for javac in your PATH? In case it's not in there try adding ;%JAVA_HOME%\bin to the end of your PATH variable (and restart Eclipse afterwards, I've had the problem of running processes not getting changes to environment variables before).

Check the Java setting in Eclipse:
Window -> Preferences
Java -> Installed JREs
Make sure that your JDK 1.8 is listed there. If it's not, add it using the Add... button.
Once the JDK is known to Eclipse, make sure that your project's settings use that JDK as a compiler, and the Gradle plugin should be able to pick up the setting from there.
In a pinch, you should also be able to run Gradle from the command line, and it should work fine since you already set the %JAVA_HOME% variable.

Basic Note
Since the release of dalvik-sdk-8u40-ea3, and in very short time, the JavaFXPorts team has released a few new versions, all of them simplifying all the process of porting a JavaFX application to Android or iOS.
They released dalvik-sdk-8u40-ea4 and they announced the release of a new plugin, that will simplify to the minimum the steps to create a mobile application from JavaFX.
While this answer may not help the OP in his particular problem, definitely it will help him and others, since everything is really simplified.
New approach
With this plugin, there's a new way of creating the HelloWorldFxml application for Android.
The new javafxmobile-plugin allows you to generate the apk with a single 'build.gradle' file.
You can find this an other basic samples here, and download the repository here.
You won't need to edit a single line, just type this on the command line, on the root of the sample, with your device connected:
gradlew androidInstall
As for previous releases, you will need JDK8u40 and Android SDK installed. No need for dalvik-sdk though, it's retrieved by the plugin.
Notice that you can open these samples from your IDE, so you will be able to modify them, and run them locally or build again the apk for your device.

Had this problem, too.
My proberties:
-Windows 7
-Dalvik SDK (dalvik-sdk-8u60-b5)
-JDK 8 (newest Version 8_60 / IMPORTANT: JDK not JRE)
-And I tried also the HelloAndroid project provided by the Dalvik-SDK-download.
So i execute the command line: gradlew installDebug
My probelm was nearly the same.
"Fail to find JDK. Please make sure there is a JAVA_HOME or JAVA8_HOME systemvariable."
#1
Created these proberties. Just like described in this post:
How to set java_home on Windows 7?
So to make everything sure, I created both with the same path. Cause I don't know exactly which one is used by gradle.
#2
This is really the hack that helps me out. Found this also in StackOverflow.
Write in your build.gradle under the android{..} stuff this line:
retrolambda {
jdk 'C:/Program Files/Java/jdk1.8.0_60' //<--your JDK-path
}
it looks like that
Then execute the same command line again and it worked for me.
I think only the 2. steps was the solution, cause I guess gradle don't look for the variable if there is a direct path to the jdk.

Android Project with ActionBarSherlock doesn't get built

I implemented the current version of ActionBarSherlock to my Android Project.
Everything works fine and I don't get any errors.
But when I try to debug or export my project I don't get an .apk-file out of my project. Just a .jar-file with the name of my project.
I've read about some problems the SDK had with building projects that contain external libraries but this was at SDK version 14 and so I hope, this bug is fixed...
So there might be another cause for this problem.
Does anybody know a possible solution?

You cannot get *.jar file as the result of building Android project. This seems very strange to me. There must be something wrong with your project settings (if you changed them), or the project you build is of the wrong type (i.e. it is Java Application instead of Android Application).
You didn't mention which IDE do you use, but I assume you use Eclipse.
Make sure you have installed Android SDK and Eclipse ADT correctly (just in case).
Next thing to try is to create a new Android Application project from existing sources (there should be such option during the process of creation).

Executing Eclipse plugin (jdt/ast) outside eclipse IDE environment

Can I execute Eclipse Java development tools as a standalone process? I need to get Java program's AST structure using Eclipse JDT from another program, and to do that, I need to execute eclipse plugin as a stand-alone process behind the scene.
Is that possible? If so, how one can do that?

Eclipse/jdt and eclipse/ast is nothing more than a jar file, so one can use them to build standalone java application.
Example
I googled to find ASTExplorer as an example to make eclipse/ast plugin as a standalone java project.
The program was targeted for pretty old eclipse (3.0.2), I downloaded the 3.0.2 for Mac OS X this site - http://archive.eclipse.org/eclipse/downloads/drops/R-3.0.2-200503110845/
You need to setup ECLIPSE_HOME classpath variables in Preference -> Java -> Classpath variables
The .classpath has those classpath variables already, you can refer to this post - .classpath contents update in eclipse. As you can see it refers eclipse/jdt(art) jar files. I'm pretty sure one can change the reference to the newest version of jdt/ast without downloading the 3.0.2 version.
As I use Mac, I need to replace the swt for PC with swt for Mac. I could do that in BuildPath/Configure Build path
First remove the PC swt reference.
Then add the correct Mac swt reference.
Compile the example with the eclipse indigo/on mac
When the setup is correct, eclipse starts building the project. You can use Project -> Build Project menu. Then, you can check the application works fine in eclipse.
Generate the executable jar
Export to executable jar file.
You'll get some warnings, but you'll have a jar file.
Execute the generated jar
Just executing java -jar ast.jar doesn't work on Mac, I got a hint from this post.
Running SWT based, cross-platform jar properly on a Mac
In short, you need to run java -XstartOnFirstThread -jar ast.jar

Does it have to be Eclipses's AST? Or is any AST generation o.k.? If it doesn't have to be eclipse, I'd suggest Habelitz open source Java AST Compiler. http://www.habelitz.com/ I'm using it myself for some projects....
Well, of course you can launch eclipse just like any other process : How to create a process in Java
And then the problem becomes relaying the information back to the original process, which gets kind of messy. My suggested approach in this case would probably be to create a plugin in eclipse and have that plugin do whatever it is you think you need the AST for. You can work out messages with command line options to eclipse, or a shared file or something.

Importing Liferay portlet into Eclipse IDE

I have a question regarding the development of liferay portlets using the liferay plugin SDK. My question goes mainly in the setup of the development IDE. The suggested one would be to use Netbeans IDE which I also tried out, but it appears to run very slowly on my machine while Eclipse is quite performant.
The setup for Netbeans IDE is the following
Go to the directory \portlets
Run the create.bat (or sh file depending on the OS) to create a new sample portlet
Run Netbeans IDE, create a new "Java free form project" and point it to the directory of the created sample portlet
That's it, pretty simple.
For the mentioned reasons above (and because I'm a lot more familiar with Eclipse) I'd like to import the project into Eclipse the same way. Is there a way for doing it without having to change too much in the original structure of the created sample portlet and the according build.xml (ant file)?? I tried already to create a new project out of the build.xml ant file of the created sample portlet, however in this way it doesn't include me the source code.
I didn't also find great tutorials on the web...
Could someone help me with this, pointing out online tutorials or give me some hints.
Thanks

I know your pain. Starting to work with Liferay needs much time. I you do not want to edit the existing source, but only crate your own portlets, you can download the plugins SDK from the 'Additional Files' section on the Liferay website. This provides ant scripts, to create a simple JSR compliant portlet, and to create all necessary things, to create a sound Eclipse project, for example:
ant -Dportlet.name=<project name> -Dportlet.display.name="<portlet title>" create
Than cd into the directory of your created portlet an do:
ant setup-eclipse
After that you should be able to create a new project from the sources in that directory in Eclipse, which can then be deployed via another ant script to the running tomcat instance. If you already know somthing about portlet programming, you shoud be pretty much settled now. If not, try to find documentation about JSR portlet programming first, before looking into Liferay specifig portlet development.

Liferay has now released an official set of Eclipse plugins that support portlet development. Here is the installation guide for installing the eclipse plugins:
Liferay IDE Installation Guide
Also there is a getting started guide that shows what to do after installation to actually setting up your first portlet project.
Getting Started Tutorial
Liferay IDE uses the Plugins SDK from Liferay under the covers to do all the work. If you already have existing projects that you created with the Plugins SDK those can be imported into Liferay IDE as well.
Importing existing Projects

you can find the tutorial for deploying liferay in eclipse
http://www.liferay.com/web/guest/community/wiki/-/wiki/Main/Development+Environment+(Windows)

No clue about Liferay's specifics, but in general, I'd do this:
Follow the steps 1 and 2 from your NB setup list
Create a new Dynamic web project (or a Java project if you don't need the web project's features) in Eclipse
Import the contents of sample portlet directory by doing Import -> File system in Eclipse
Adjust the project's Java source directory to point to the generated sample portlet source directory (that should now appear in your project)
Adjust classpath of the project, point it to LR lib folders, ...
If there's a generated build.xml, check if it can be used to deploy to LR, or to produce builds.

As of March 2011, there is some official Liferay support for NetBeans and as noted before, there is official support for Eclipse ( In the Marketplace). The Documentarian uses Eclipse himself, though many examples just use the Plugins-SDK with shell scripts, ant scripts and no IDE.
We are fighting with Liferay on Eclipse, Eclipse seems buggy and unpredictable, but we are also new to J2EE and Eclipse ( so discount this last comment a bit), and I have our portlet files setup in a separate area for SVN, requiring a refactor-move, refactor is definitely buggy.
You should be aware that there is a book for developers on the way from the official documentarian - we've bought the early release and found it useful. He does cover some IDE issues. See Manning press.
The Liferay sample portlets ( there are many) are not set up for Eclipse projects, and you'll have to import some java files and jump through some Eclipse hoops to get them into a running Eclipse project you can develop.