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                輸入輸出(IO, Input/Output)包含有多種, 最常用的有標準IO和文件IO。 標準IO是在控制臺的輸入輸出, Java 應用啟動的時候會有一個控制臺界面, 一般就是在CMD界面中, 如果是在Eclipse 等集成IDE 開發時,該輸出輸出就在IDE的控制臺中了。 單個字符 ``` //單個字符輸入 int i = System.in.read(); System.out.println(i); ``` 字符串 ``` //字符串輸入 Scanner reader=new Scanner(System.in); String str = reader.nextLine(); System.out.println(str); ```
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