问题 Does the LiClipse development environment (IDE) for Mac OS X include its own copy of the JRE (Java Runtime Environment), or does it use the system's JRE to run? LiClipse is built on the Eclipse IDE, which is written in the Java language, and so needs a JRE to run. The answer for Eclipse and for LiClipse may be the same. Mac OS permits applications to be packaged as "bundles", a camouflaged form of a directory tree, so it is possible for an app to include support software such as a JRE.