marschall opened a new issue #10: JarLoader breaks strong encapsulation of JDK 
classes
URL: https://github.com/apache/incubator-openwhisk-runtime-java/issues/10
 
 
   `JarLoader#augmentEnv` performs illegal access on core JDK classes by 
breaking accessibility rules. This breaks the strong encapsulation rules 
outlined in [JEP 261](http://openjdk.java.net/jeps/261). Starting with Java 9 
this will print a warning by default on the command line (and possibly have a 
performance and runtime impact). At some yet to be defined point in the future 
this will throw an exception by default. At some later yet to be defined point 
in the future this will always throw an exception.
   
   I don't see an alternative to entirely moving away from modifying 
environment variables. They are readonly in Java. Modifying them is a hack that 
makes testing hard and multi threading impossible.

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