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                利用掃描儀Scanner進行數據輸入 (1)放在類的聲明之前,引入掃描儀 ~~~ import java.util.Scanner; ~~~ (2) 聲明一個新的掃描儀(即向內側聲請一個空間) ~~~ Scanner in; ~~~ (3)賦值 ~~~ in = new Scanner(System.in); Scanner input new Scanner(System.in); ~~~ (4)使用掃描儀 ~~~ 整型數據輸入:in.nextInt()來接收 雙精度小數輸入:in.nextDouble()來接收 字符串輸入:in.next()來接收 沒有in.nextChar()這個方法來接收單個字符的輸入 ~~~ 實例: ~~~ import java.util.Scanner; public class Test{ public static void main(String[] args){ Scanner in = new Scanner(System.in); System.out.println("請輸入你的姓名:"); String name=in.next(); System.out.println("請輸入你的年齡:"); int age=in.nextInt(); System.out.println("姓名"+name); System.out.println("年齡"+age); } } ~~~
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