@Nullable
  public Date getIncorporationDate() {
    if (incorporationDay == null || incorporationMonth == null || incorporationYear == null) {
      return null;
    }

    GregorianCalendar calendarDay = new GregorianCalendar(incorporationYear, incorporationMonth, incorporationDay);
    return calendarDay.getTime();
  }
@Nullable
  public Date getIncorporationDate() {
    if (incorporationDay == null || incorporationMonth == null || incorporationYear == null) {
      return null;
    }

    GregorianCalendar calendarDay = new GregorianCalendar(incorporationYear, incorporationMonth, incorporationDay);
    return calendarDay.getTime();
  }
@ Nullable public Date getIncorporationDate ( ) { if ( incorporationDay == null || incorporationMonth == null || incorporationYear == null ) { return null ; } GregorianCalendar calendarDay = new GregorianCalendar ( incorporationYear , incorporationMonth , incorporationDay ) ; return calendarDay . getTime ( ) ; }
Gets the date of incorporation.

@return the incorporation date
Gets the date of incorporation .