* BAEL-5350:
1. Added example usage of creating entries with Java itself
2. Added example usage of creating entries with Apache commons collecttions & Guava
3. Custom entry class and its usages
* BAEL-5350:
1. Created unit tests
* BAEL-5350:
1. simplifed assertion for java 9 entry creation
* BAEL-5350:
1. moved into core-java-collections-maps-4 module
2. updated custom entry class and its unit test
* BAEL 4293 correcting the unit test file ame.
* changes for BAEL 5164
* added maven compiler properties for fixing compilation issues.
* making BAEL 5164 java 8 compatible.
Elmar Mammadov
sampadawagde
Krzysiek
chaos2418
rvsathe
Ralf Ueberfuhr