FULL PRODUCT VERSION :
java version "1.8.0_66"
Java(TM) SE Runtime Environment (build 1.8.0_66-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.66-b17, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Windows 7 64bits
But should happen on every platforms.

A DESCRIPTION OF THE PROBLEM :
The messages CONFLICTING_XML_ELEMENT_MAPPING and NO_XML_EL contains strings reading " {'{0}'} ".

In consequence, when the java.text.MessageFormat.format method is invoked with these keys, a NumberFormatException for input string " '{0}' " is raised as the first enclosing braces are considered as the argument placeholders, and the "'{0}'" part is considered as the argument index and parsed as an integer.


REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
Manually update the resources.jar in the lib folder of the JRE to fix the culprit messages.