void instanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) {

  {- -------------------------------------------
  (1) (変数宣言など)
      ---------------------------------------- -}

      methodHandle h_method(THREAD, this_oop->class_initializer());

  {- -------------------------------------------
  (1) (assert)
      ---------------------------------------- -}

      assert(!this_oop->is_initialized(), "we cannot initialize twice");

  {- -------------------------------------------
  (1) (トレース出力)
      ---------------------------------------- -}

      if (TraceClassInitialization) {
        tty->print("%d Initializing ", call_class_initializer_impl_counter++);
        this_oop->name()->print_value();
        tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop());
      }

  {- -------------------------------------------
  (1) もし static 初期化子があれば, 実行する.
      ---------------------------------------- -}

      if (h_method() != NULL) {
        JavaCallArguments args; // No arguments
        JavaValue result(T_VOID);
        JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args)
      }
    }