Examples and sample codes I have been collecting over a period of time while preparing for 1Z0-803/4 preparation.
Source: Apart from personal creation, Oracle Java SE Tutorials, OCA/OCP Java SE 7 Programmer I & II Study Guide (Exams 1Z0-803 & 1Z0-804) Oracle Press, blogs of various technical authors.
NOTE: This is an eclipse project, not Maven. Requires JDK 7.