The Modular Run-Time image, integrated in b41, no longer has JAR files, see JEP 220 [1], The meta-index is no longer generated or used. This issue proposes to remove the meta-index support from the runtime and the build.
http://cr.openjdk.java.net/~chegar/8068686/ https://bugs.openjdk.java.net/browse/JDK-8068686 -Chris. [1] https://bugs.openjdk.java.net/browse/JDK-8061971
