Procedure to create a jar file in eclipse or netbeans

1 Click on Properties

2 Click on Packaging

3 Click on Compress JAR File

4 Accept changes, click ok

5 Click the button in the ribbon tab with the hammer/broom. (clean and build project)

6 Go to the directory where your project is stored

7 Look in the dist folder

It should be located there if everything went alright. Make sure you aren't excluding any files when the jar file is being set up in the dist folder.

link: http://stackoverflow.com/questions/9681876/how-to-create-a-jar-file-in-netbeans