Don't break syntax coloring for java

Ellipsis char broke highlighting for java in some cases

Also, using comment syntax make for a visual break between
code fragments, and enhances visual comprehension

Change-Id: Ia2dc406d01940fb9f2f2ba3244f805098f77c202
Adapt Developer document to current version

Based on update of the mediawiki page

Change-Id: I9bcd1e3ba7f78ea5a6e9247e68853e1a17af2107