public static boolean isWindows() {
    switch (OS_ID) {
        case OS_WINDOWS_XP:
        case OS_WINDOWS_VISTA:
        case OS_WINDOWS_2000:
        case OS_WINDOWS_2003:
        case OS_WINDOWS_NT:
        case OS_WINDOWS_8:
        case OS_WINDOWS_7:
        case OS_WINDOWS_OTHER:
          return true;
    }
    return false;
  }