Executable JAR files. For an executable JAR file that contains a stand-alone application, a Main-Class attribute should exist that provides the name of the first piece of code for the Java Runtime ...

We always recommend downloading executable files from the primary source or the official homepage if you can. So, let’s look at some ways to fix things. The first move is to delete the program ...

Instead of fixing the source code, it appears that the company's developers made a series of careful changes directly to the buggy program's executable file.