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@@ -98,7 +98,7 @@ Java I/O 使用了装饰者模式来实现。以 InputStream 为例,
- FileInputStream 是 InputStream 的子类,属于具体组件,提供了字节流的输入操作;
- FilterInputStream 属于抽象装饰者,装饰者用于装饰组件,为组件提供额外的功能。例如 BufferedInputStream 为 FileInputStream 提供缓存的功能。
-
+
实例化一个具有缓存功能的字节流对象时,只需要在 FileInputStream 对象上再套一层 BufferedInputStream 对象即可。
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