## 接口的使用
org.springframework.ui.context.HierarchicalThemeSource

- 使用HierarchicalThemeSource的程序包
  程序包 | 说明
  --- | ---
  org.springframework.ui.context.support | Classes supporting the org.springframework.ui.context package.

- - ### org.springframework.ui.context.support中HierarchicalThemeSource的使用

    实现HierarchicalThemeSource的org.springframework.ui.context.support中的类
    限定符和类型 | 类和说明
    --- | ---
    `class` | `DelegatingThemeSource` Empty ThemeSource that delegates all calls to the parent ThemeSource.
    `class` | `ResourceBundleThemeSource` `ThemeSource` implementation that looks up an individual `ResourceBundle` per theme.