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fix typo (from "mete" to "meta") #17

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Jul 26, 2017
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fix typo (from "mete" to "meta") #17

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2 changes: 1 addition & 1 deletion docs/CH17.md
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# 第 17 章 Annotation

J2SE 5.0 中對 metadata 提出的功能是 Annotation，metadata 就是「資料的資料」（Data about data），突然看到這樣的解釋會覺得奇怪，但以表格為例，表格中呈現的就是資料，但有時候還會有額外的資料用來說明表格的作用，從這個角度來看，metedata 就不這麼的奇怪。
J2SE 5.0 中對 metadata 提出的功能是 Annotation，metadata 就是「資料的資料」（Data about data），突然看到這樣的解釋會覺得奇怪，但以表格為例，表格中呈現的就是資料，但有時候還會有額外的資料用來說明表格的作用，從這個角度來看，metadata 就不這麼的奇怪。

在 J2SE 5.0 中，Annotation 的主要目的介於原始碼與 API 文件說明之間，Annotation 對程式碼作出一些說明與解釋，Class 中可以包含這些解釋，編譯器或其它程式分析工作可以使用 Annotation 來作分析，您可以從 java.lang.Override、java.lang.Deprecated、java.lang.SuppressWarnings 這三個 J2SE 5.0 中標準的 Annotation 型態開始瞭解 Annotation 的作用。

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