I'd like to backport this charset to jdk8u-dev. webrev : http://cr.openjdk.java.net/~coffeys/webrev.8071447.8u/webrev/ bug report : https://bugs.openjdk.java.net/browse/JDK-8071447 review thread : http://mail.openjdk.java.net/pipermail/nio-dev/2015-February/003060.html regards, Sean.