void JDK_Version::fully_initialize(
    uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) {

      // This is only called when current is less than 1.6 and we've gotten
      // far enough in the initialization to determine the exact version.
      assert(major < 6, "not needed for JDK version >= 6");
      assert(is_partially_initialized(), "must not initialize");

  {- -------------------------------------------
  (1) バージョンが 4 以前の場合は, 1.x.x という形に変更
      ---------------------------------------- -}

      if (major < 5) {
        // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc.
        micro = minor;
        minor = major;
        major = 1;
      }

  {- -------------------------------------------
  (1) 結果を _current に設定する.
      ---------------------------------------- -}

      _current = JDK_Version(major, minor, micro, update);
    }