FULL PRODUCT VERSION :
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b120)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b62, mixed mode)
A DESCRIPTION OF THE PROBLEM :
The Javadoc for http://download.java.net/jdk8/docs/api/java/lang/reflect/Method.html#getParameterCount-- misses a "@since 1.8" javadoc information.
See commit: http://hg.openjdk.java.net/jdk8/jdk8/jdk/diff/c9eb1d3ef37f/src/share/classes/java/lang/reflect/Method.java
REPRODUCIBILITY :
This bug can be reproduced always.