Revert "Create Calendar.java"

This reverts commit d4de7a4c60c208de43ba04f0260ce263ba2d5ad7.
delete 2 files

delete clander.java & clander.js
Revert "Revert "Create Calendar.java""

This reverts commit d6ec319c6ae8301754a7fdb6a04d13bbf1d668bd.