One of the many IDE in Java programming is JCreator and creating Executable Jar file is not instant, unlike in Netbeans you can have it automatically. In JCreator, you need to set up some configurations to have it. And here is a re-post from a site I found to create an Executable Jar file.
You can configure a “tool” that will automate the jar creation process. You only need to do it once.
1. Click on Configure/Options.
2. Click on Tools in the left column.
3. Click New, and choose Create Jar file.
4. Click on the newly created entry Create Jar File in the left column under Tools.
5. Edit the middle line labeled Arguments: it should havecvfm $[PrjName].jar manifest.txt *.class
6. Click OK.
Now set up a project for your program, create a manifest file manifest.txt or copy and edit an existing one. Place manifest.txt in the same folder where the .class files go. Under View/Toolbars check the Tools toolbar. Click on the corresponding tool button or press Ctrl-1 (or Ctrl-n if this is the n-th tool) to run the Create Jar File tool.
With Windows Explorer, go to the jar file that you just created and double click on it to run.
Source: http://www.skylit.com/javamethods/faqs/createjar.html
