docs: private static Class<?> tryLoadInnerClass(String name, ClassLoader classLoader, boolean isInitialized) {
  		// 尝试获取内部类，例如java.lang.Thread.State =》java.lang.Thread$State
  		final int lastDotIndex = name.lastIndexOf(PACKAGE_SEPARATOR);
  		if (lastDotIndex > 0) {// 类与内部类的分隔符不能在第一位，因此>0
  			final String innerClassName = name.substring(0, lastDotIndex) + INNER_CLASS_SEPARATOR + name.substring(lastDotIndex + 1);
  			try {
  				return Class.forName(innerClassName, isInitialized, classLoader);
  			} catch (ClassNotFoundException ex2) {
  				// 尝试获取内部类失败时，忽略之。
  			}
  		}
  		return null;
  	}