java step1

The java enhancement in 0.3 is for basic features like in C++ class LnkdLst. Do not depend on java Collections like LinkedList.
Now a "class LnkdLst " is available and settings could be done for a specific linked-list, like using dynamic or static Linked-List-Elements (nodes).
The one and only Test-Code now just measures some time for append via LnkdLst vs append via LinkedList.