在NetBeans中构建可执行JAR无效

Question

I have seen a lot of references to this type of problem on StackOverflow and other places on the internet but the solution everybody else is happy with isn't working for me.

The issue: I've created Java projects and would like to run them via executable .jar files. When I try to run a .jar file for my project I get a "Could not find the main class: classname. Project will exit." error.

Solutions I've read about:
-editing the 'main class' from the project properties "run" tab and choose the location of the main class.
-edit the manifest file to include: Main-Class: classname

None of this has worked. Entering the right class in the project properties, and with an updated manifest file I still get the main class not found error and I have run out of ideas on how to fix this.

Any help would be more than slightly appreciated.

EDIT:

Here is a copy of my actual manifest file in its entirity:

Manifest-Version: 1.0
Main-Class: TestCode
<invisible blank line here>

I've heard that a blank line is required in the .mf file so I've put one in there just in case.

The project name is TestCode it is in the "default package" under TestCode.java

EDIT 2:

I unpacked the .jar file and looked at its contents the manifest.mf file inside the .jar has the correct class path listed for the .class file which contains the main method. (most of these projects have only one .class file) and yet I still get the "Could not find the main class" error.

The main class is clearly inside the .jar file, the manifest properly points to it and it still won't run the program.

Answer 1

写

main -class: Packagename.Classname