So, I have tried every solution that I could find to remedy this but JAR files still will not open for me on Windows 10. Not sure what else I can do. Pretty frustrated as I am not a programmer and ...

Run the jar tool without arguments to see its usage. You pass it the -M option to create a JAR without a manifest. You won't be able to run the JAR file with java -jar, but you will still be able ...

Describe the bug When I click on run a jar file and run my jar file, this error occurs java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java ...