Please review these small fixes to remove a couple of warnings in the JVMTI demos.
bug: https://bugs.openjdk.java.net/browse/JDK-8074841 bug: https://bugs.openjdk.java.net/browse/JDK-8074842 webrev: http://cr.openjdk.java.net/~sla/8074841/webrev.00/ Thanks, /Staffan
