Is there a good java API for manipulating RAR archive files someone could recommend? Googling did not turn up anything overwhelmingly convincing.
Fabian Steeg
You could try JUnRar, "a RAR handling API implemented in pure Java" (quoting the site).
There is also this fork from SF(@Fabian's answer and this one are forked from an old SF project):
I think this will help you.
A pure Java library for scanning and enumerating RAR archive contents
来源：https://stackoverflow.com/questions/561107/rar-archives-with-java