Consider a JAR file with the following entries:

META-INF/
META-INF/MANIFEST.MF
foo
META-INF/versions/
META-INF/versions/9/
META-INF/versions/9/bar
META-INF/versions/9/foo

The main manifest has "Multi-Release: true". 

If the JAR file is opened with the new constructor and JarFile.Release.RUNTIME then the contents of the JAR file that the entries or stream methods reports is:

META-INF/
META-INF/MANIFEST.MF
foo

However, if we use JarFile's getEntry("bar") then bar will be found.

We need to see how this anomaly can be fixed without introducing a performance issue.