FULL PRODUCT VERSION :
java version "1.8.0_31"
Java(TM) SE Runtime Environment (build 1.8.0_31-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.31-b07, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
FileHandler(String pattern, boolean append) doesn't lock the file created as with java 7

ADDITIONAL REGRESSION INFORMATION:
java version "1.7.0_75"
Java(TM) SE Runtime Environment (build 1.7.0_75-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.75-b04, mixed mode)

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
to lock the file
ACTUAL -
file is not locked

REPRODUCIBILITY :
This bug can be reproduced always.