Hi, please review this patch to improve JarFile.getEntry performance on multi-release jar files, mainly contributed by Eirik Bjørsnøs.
The main idea is to piggy-back on the scanning of meta-inf entries we already do during initCEN to scan what versions exists in the jar file. This then reduces the number of lookups we'll have to do in typical scenarios. Webrev: http://cr.openjdk.java.net/~redestad/8242596/open.00/ Bug: https://bugs.openjdk.java.net/browse/JDK-8242596 Testing: tier1-2 Thanks! /Claes
