Freemarker i18n the easy way - Java side

I18n-easyway-finished-java

public static Map<String, Object> getDataModel() {
  HashMap<String, Object> datamodel = new HashMap<>();
  datamodel.put("date", new LocalDate());
  datamodel.put("time", new LocalTime());
  datamodel.put("month", new YearMonth());
  datamodel.put("boolean", true);
  datamodel.put("greeting", new MessageParameterObj(Messages.HELLO, "Freemarker"));
  return datamodel;
}