Executing this pre-jar Ant target will create four properties files having all the definitions combined from the two XML files. Conversion from UTF-8 to Unicode encoding is part of properties-file ...

As would creating the jar file and deleting the manifest file. I'm looking for a jar command line - what switches, options, what parameters - would create a jar file without a manifest file.

In this article Rafael Winterhalter, creator of the bytecode manipulation tool Byte Buddy, provides detailed guidance on how to easily create Java agents using Byte Buddy.