I have configured my Eclipse to have a C:\Eclipse\external_libs directory where I place all my external libraries. In my case , my external libs are WATIJ, XMLUNIT, and XOM . Adding the external libs to the project is no problem... there is no question about that.
I also place my JDK at C:\Eclipse\Javasoft .
What I am wondering IS : is there a better location to place external libs? It's important to note that I like being able to pack my Eclipse directory into a zip file and move it and open it on another computer in a portable fashion.
It's normally done on a per app/project basis. For java webapps you normally have your external libs in WEB-INF/lib. However, if you share the libraries across projects AND you need to zip your eclipse directory, what you're doing now is probably the best solution imo.
In linux you could add them to something like /usr/lib/share and include that in your classpath (but you couldn't zip it all up), but not sure if that sort of directory exists in windows.
If you do place all your library in an external folder, please use "linked resources" to avoid putting any fixed path in your .classpath file.
You can then reference that external directory from within your project, with a linked folder.
Related
I have a NetBeans project that uses the GSON library. I've tried including the GSON.jar file without requiring future users to separately download it. However it doesn't seem to work. The project looks for the file from the relative path of my computer so the file isn't found on another user's computer. Is there a way to include GSON.jar and "Export to Zip" and keep the reference in the project itself? I'm lost!
Thank you
Exporting a Project to ZIP zips up the project folder only, and not anything outside of the folder, including dependencies. If you include the GSON.jar file in the project folder, then the JAR file will be included in the .ZIP file. It's a good practice anyway since NetBeans will use a relative classpath and thus if you move the project itself NetBeans won't give you an error message when loading the project.
We have an application developed in NetBeans, based on the NetBeans platform. There's a 3'rd party program that we have a runtime dependency on, more specifically a jar in the other progams lib folder.
How should we include the other progam's jar in our classpath?
The recommendation from the other progam's manufacturer is to set environment variable CLASSPATH to include
C:\Progam Files\Other Program\lib\theJAR.jar
And if that's not possible, we should copy theJAR.jar to JRE-HOME\lib\ext
We must not copy theJAR.jar anywhere else, that might cause it to stop working...
Now NetBeans takes no notice of what's on environment variable CLASSPATH. Their recommended way seems to be to make a wrapper, but that would lead to copying the jar, unless there's some way to make a wrapper module that points to CLASSPATH?
At the moment we are copying the jar into JRE-HOME\lib\ext. But then there's unnecessary hassle when we install some java update.
Do you have any solution to this problem? It seems like something that might be simple, but I haven't found the right place to look yet...
Edit: The application is ant-based.
From the documentation for the Module System API's overview of the runtime infrastructure (bottom of the page under the section "Common Problems and Solutions"):
Q: Can my module add a library JAR to the classpath from outside the
IDE [read: platform] installation?...
A: Not easily. You have a few options:
Add an entry to ide.cfg [your app's .config file]. For example:
-cp:a c:\eak\lib\eak.jar This startup file provides the ability to add classpath entries to the IDE's Java invocation.
...
It goes on to list two more options. The second option is the same solution you've come up with. The third is to "partition your module and use a new classloader" which I can't recommend either way since I have no experience doing this (but it's worth a read).
Assuming that this first option is what you are looking for, you will need to add a custom .conf file to your project and point to it in your project.properties file, like so: app.conf=nbproject/my.conf. This will add your custom .conf file to your app's install directory instead of the default config file that is normally added. Of course, you'll need to add the -cp:a c:\eak\lib\eak.jar entry to this custom config file in order to load the .jar.
During development you'll need to add the following entry to the project.properties file: run.args.extra=-cp:a c:\eak\lib\eak.jar. This will pass the command line option to your debug instance.
You can add that .jar file by following the steps below:
In the left side panel named "Projects" open your project and right click on the "Libraries", then select "Add JAR/Folder...".
Then select your .jar file from the location where you have stored it in the next dialog box that opens and then press "Open".
Vola Finished!!! (with the same process you can add other libraries also like JavaCV, JMF,etc)
And Now You Can Use That .Jar File From Your Project Library.
Hope It Helps.
My environment:
Netbean 6.9.1
Glassfish 3.0.1
Windows 7
Goal:
When my coworkers opens the Netbean Project, the library is already referenced without them manually create library, adding jars into it and reference it.
Detail:
I created Netbean project and the project has reference to few jar files in the folder.
Currently whoever opens the project for the first time, they have to manually create library and refer it to the project.
My project location:
C:\Users\masatosan\Desktop\myProject\myApp
My library location:
C:\Users\masatosan\Desktop\myProject\lib\myLib
The myLib folder contains:
some1.jar
some2.jar
some3.jar
I can achieve my goal if I create reference to individual jar file by defining to project.properties file like below: (creating reference to sqljdbc4.jar)
file.reference.sqljdbc4.jar=../lib/sqljdbc4.jar
javac.classpath=\
${libs.restlib_gfv3ee6.classpath}:\
${file.reference.sqljdbc4.jar}:
But my case is different since I have 3 jars in the myLib folder and wanting to reference them all.
Is it possible to reference all jars in myLib folder?
Please let me know if you need more clarification.
I'm sorry, but it doesn't work that way. When you create a project, you have to add the jar files individually.
However, if you put your lib folder under your project, netbeans will refer to them via relative paths. Then when you share the project (lib directory included), netbeans will be able to automatically find the jar files when the next person uses the project. That way you only have to add jar files once.
Short of using a dependency management tool like maven (which Netbeans has good support for), this is really the best solution. It uses a bit more disk space (obviously), but that's never been a huge issue for me.
I figured how so let me share.
Tool --> Library then library window pop up.
Create library called "MyLib" which contains multiple jars.
Add "MyLib" to your project. This change will be written to project.properties file under nbproject folder.
project.properties file indicates the classpath of lib reference you just added.
It should look like something below
javac.classpath=\
${libs.Excella.classpath}:\
${libs.MyLib.classpath}
Now someone else opens the project from different machine and she just needs to do step#1 and #2, which is to create library with same library name i.e. "MyLib"
I think this is what Bill was saying originally but thought it would be helpful to give step by step instructions since I finally figured .... after long time :D
I'm using NetBeans to develop J2EE web service.
NetBeans create a directory called nbproject inside my project directory.
I'm wondering if I should put this directory under source control. I think it is required to build the project without NetBeans.
This is usually not required. Think of it this way: If I was to check out your project but happened to be using a different IDE, I would not require your nbproject directory. In other words: This directory is machine specific, not project specific. Hope this helps.
The nbProject folder contains all the netbeans metadata about your project. When you go Project -> properties all the settings (and others) that you find there are stored in the nbProjects folder.
EDIT:
This has been answered in another question, and the answer there is more complete and accurate
In short you should include nbproject, but not nbproject/private
If you are building your project with Maven or Gradle you should definitely exclude the folder from the VCS.
Can I have a Library defined that makes use of JNI in NetBeans?
Seems the library definition only allows Jars or Folders.
How can I assure that the DLL follows the jar file when the app is built?
Assuming you are referring to building a NetBeans Platform App (or module), then you can place the DLL in the "release/modules/lib/" folder. This is per the platform FAQ:
http://wiki.netbeans.org/DevFaqNativeLibraries
Additional information here:
http://bits.netbeans.org/dev/javadoc/org-openide-modules/org/openide/modules/doc-files/api.html#jni
If you are asking more generally, then I think most people package the DLL inside the jar, then extract it to a temp location upon application startup. e.g.
How to make a JAR file that includes DLL files?
If that's not what you're looking for, then you'll need to provide more information as to what you're trying to do.
netbeans won't do it on its own, but since it uses ant behind the scenes there's a workaround.
you should create a subdirectory named jni in your project directory (c:\path\to\mynetbeansproject\jni), put all the .dll, .so and .jnilib files in there (the native stuff), and add the following lines to the build.xml file you find in your project directory, just before the </project> tag:
<target name="-post-compile">
<copy todir="${dist.dir}/lib">
<fileset dir="jni" />
</copy>
</target>
then add the jar file to your project just like you always do. :)
the snippet you inserted in build.xml will make sure that the native libraries follow your jar files in the dist/lib folder when you invoke "Clean and Build" from within netbeans (or ant from the command line); the jvm will look for the .dll (.so, .jnilib) files in the same directory as the .jar that's loading them, so it will work.
note that this won't make your project run from within netbeans, because… I'm not really sure what goes on, but it looks like the library path (LD_LIBRARY_PATH) doesn't include your projects' libraries, and there's no way I know of changing it from within netbeans. just put your native libraries in /Library/Java/Extensions on mac os x, or just stash them in c:\windows\system32 under windows. if you're running a 64 bit windows with a 64 bit jvm, I have no clue; if you're running linux, you probably know where to stash them, but /usr/lib/java might be a good bet.
I tested the following solution while using NetBeans 7.0.1 and it worked, but I don't know if it works in early versions, too.
The solution is easy and works per NetBeans module. So, if you have a suite, don't place its JNI files into suite project, instead, place the JNI files that you want into the module itself. Do:
Find a NetBeans module project that you want (or need, or think) to place your JNI libraries (them with extension .DLL, .so and .jnilib, by eg);
At Projects, right click at the module node, click at Properties menu;
In the Project Properties dialog, click at Libraries and Wrapped JARs. You must add any external library there. I added the RxTX jar library. After add your external libraries, the Netbeans Ant script will copy all files/folders from the directory your_project_dir/release to the right location when you build the solution.
So, place your native libraries at your_project_dir/release/lib. If you want, you can create subdirectories for each target platform that you need, as: your_project_dir/release/lib/amd64, your_project_dir/release/lib/sparc32
To know, more, read:
http://bits.netbeans.org/dev/javadoc/org-openide-modules/org/openide/modules/doc-files/api.html#jni
Regards,
marciowb.info