Java

Find Java runtimes from the official launcher, or download Mojang’s.

Runtimes

find	Find a runtime in the official launcher or the download cache.
find_all	Find every known runtime that is installed, in order of preference.
download	Download a Mojang runtime into the cache, never the launcher's directory.
required_for	Return the runtime component a version needs.
JavaRuntime	An installed Java runtime.

Locations

official_runtime_dirs	List the directories where the official launcher keeps Java runtimes.
platform_key	Return Mojang's name for this platform, such as windows-x64.