Due to the legacy project, Pack200 and Upack00 needed to be used under Java 17, so the relevant source code was extracted from src.zip of jdk8 to form this project.
<dependency>
<groupId>io.github.wolcengit</groupId>
<artifactId>wacky-pack200</artifactId>
<version>1.0.0</version>
</dependency>// java17+
import wacky.java.util.jar.Pack200;