New candidate JEP: 336: Deprecate the Pack200 Tools and API

Daniel Megert daniel_megert at
Tue Jun 12 20:50:37 UTC 2018

pack200 is used by the Eclipse update manager a.k.a. p2. The JARed 
plug-ins are compressed with pack200 and put into a p2 repository. 
Removing pack200 will make the download (and hence install) of plug-ins 
much slower. Eclipse would therefore like to keep this technology. If 
that's not an option, then we would like that the removal does not happen 
before Java 13.

Eclipse PMC

More information about the jdk-dev mailing list