andualem/droolsjbpm-tools — comment on commit 52d01bafcb9ea9858bd19ffa5dd23c54ea4dcd3a
File: drools-eclipse/org.drools.eclipse/src/main/java/org/drools/eclipse/flow/bpmn2/editor/BPMNModelEditor.java line 180
By ge0ffrey:

You're might correct: I haven't seen a java spec/javadoc that assures it works on all platforms.
The rest of droolsjbpm uses "UTF-8" when referring to it and it's the official name: http://en.wikipedia.org/wiki/UTF-8 so it's probably just easier to change it