I'm trying to export a project as a .jar in NetBeans 8, and I realize it's supposed to save automatically. All the sources I've found point out that it should be located in <myProjectFolder>/dist,but that directory does not exist-- is there a setting I must toggle?
You have to first clean and build to generate one.
As you do programming work you will see the result of your work , but this doesn't go into the dist folder until you clean and build.
Right click your project name in the NetBeans and you will see many options
starting with new, Build, clean and Build. click the clean and build and it will
create a dist folder which has the war file and you can access the dist folder
in the files at the top (projects Files Services)
Related
Well I have my source code that i have done using the IDE netbeans. Now I wanted to move this java application to a web application. For that I need to create a jar file from my source code, so that I could invoke it in ma jsp file.
I have not been able to find any option in netbeans or any other way to create a .jar file of this source code.
Could someone tell me how to do that.
Thanks
Create a Java archive (.jar) file using NetBeans as follows:
Right-click on the Project name
Select Properties
Click Packaging
Check Build JAR after Compiling
Check Compress JAR File
Click OK to accept changes
Right-click on a Project name
Select Build or Clean and Build
Clean and Build will first delete build artifacts (such as .class files), whereas Build will retain any existing .class files, creating new versions necessary. To elucidate, imagine a project with two classes, A and B.
When built the first time, the IDE creates A.class and B.class. Now you delete B.java but don't clear out B.class. Executing Build should leave B.class in the build directory, and bundle it into the JAR. Selecting Clean and Build will delete B.class. Since B.java was deleted, no longer will B.class be bundled.
The JAR file is built. To view it inside NetBeans:
Click the Files tab
Expand Project name >> dist
Ensure files aren't being excluded when building the JAR file.
Please do right click on the project and go to properties.
Then go to Build and Packaging.
You can see the JAR file location that is produced by defualt setting of netbean in the dist directory.
I also tried to make an executable jar file that I could run with the following command:
java -jar <jarfile>
After some searching I found the following link:
Packaging and Deploying Desktop Java Applications
I set the project's main class:
Right-click the project's node and choose Properties
Select the Run panel and enter the main class in the Main Class field
Click OK to close the Project Properties dialog box
Clean and build project
Then in the fodler dist the newly created jar should be executable with the command I mentioned above.
Now (2020) NetBeans 11 does it automatically with the "Build" command (right click on the project's name and choose "Build")
So I have been using netbeans and successfully was able to do generate jar file in the dist folder ( using clean & build).
Now suddenly this does not work. It generates a jar file that does not run. Upon inspection, I found that the jar file does not have classes in it ( only folder structure). I also noticed that the build folder does not have classes.
However, when I run it by clicking the green arrow, it runs and the build folder has classes. When I do Clean/build to generate the jar file in the dist folder, then the build folder resorts to empty classes and empty jar file.
Any idea? I restarted netbeans, did a refresh and all that but no luck
Please help
I found the solution for many people running into this issue. It is the missing eclipseLink Library
I have create a simple program using Eclipse 4.1.. I wanted to build or deploy my project into a .jar. I also added external libraries in my project. I wanted the output same as in Netbeans with the .jar file and lib folder in the dist folder, but there should be also a folder named help and lang.. How can I do this with eclipse?!
Follow the steps provided here.
Or if you don't want to complex things up, select Runnable JAR file instead of JAR file set the directory where the .jar is to be written then click Finish.
Eclipse will create the [Project Name]_lib directory for the external libraries included in the project.
I am now doing a project using Eclipse, and I have some resource files (e.g., image, text) saved in the bin folder, and these files are needed by the program.
However, with every build, Eclipse would try to clean up the folder, then rebuild the project. When cleaning, it deletes the resource files in the folder. Is there anyway to stop Eclipse from doing this?
I know I could change the location of the files, but I am also curious why Eclipse would do this, and could this be prevented from happening.
Thanks!
Go to Options -> Java-> Compiler -> Building and uncheck Scrub output folders when cleaning projects.
That did the trick for me. In my project, I have an Ant task that adds a few configuration resources to the bin folder to include them in the classpath, without having them in src
I can't say exactly why it does it, but probably that's just how Eclipse does the build: empty the "output folder" and start compiling.
That said, if you put your files into a source folder, then Eclipse will simply copy the files over to bin on every build and they won't disappear. It will do this to any file it doesn't know how to compile, e.g. .xml, .xsd, .png, etc.
You can consider using a maven style project and add the resources to the resources folder.
Here is a link to maven directory layout.
What kind of project you are using in eclipse. You can turn off build automatically feature in the Project menu. Which would stop eclipse from cleaning up projects automatically.
Copy and paste your resources into the source folder. In eclipse, in package explorer, find your project, then paste into src. It then gives an option to copy the file or link to it. Click copy and it gets stored in /bin but won't get deleted.
I am using Eclipse and I have just started working on a project that needs another project (say pjkt) to function. The pjkt project files are stored in a specific folder. I would like to create a jar from pjkt and then add this jar to my project buildpath. How do I do this? Do I need create first in Eclipse a new project from the pjkt code, build it and then select the export command?
Yes create a new project and export as .jar.
To answer the question about the build path:
Create a project directory (in the using project) for library files - it's common to create it in parallel to /src and /bin and call it /lib;
Once you've created (by exporting) your jar from the used project, copy it into the /lib directory;
If you did any of this creating and copying outside of eclipse, refresh your project so everything will show up in the Project Explorer;
In the Project Explorer, right-click on the .jar in the /lib folder and do "Build Path | Add to Build Path".
Done!
If you need to work on both projects, and have them open in Eclipse at the same time, another approach is to open Properties -> Build Path for the new project, and add pjkt on the Project Dependencies tab. This will provide all the exported resources from pjkt to the master project.