问题
Where is JRE folder in Java 9? I have seen in some site that JRE is present in a separate distribution folder. But where it is located?
回答1:
The JDK and JRE run-time images have been restructured in JDK 9. The JDK run-time image no longer includes a "jre" sub-directory.
A summary of the restructuring is documented in the JDK 9 release notes (Modular Run-Time Images note).
JEP 220 documents the motivations and all the details of the new layout.
The changes have been in JDK 9 early access builds since late 2014 to give tools and libraries that depend on the legacy structure time to adjust - hopefully the tools that that you use have already been updated.
来源：https://stackoverflow.com/questions/46388117/where-is-jre-folder-in-java-9