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                # Java 程序:從用戶獲取輸入 > 原文: [https://beginnersbook.com/2014/07/java-program-to-get-input-from-user/](https://beginnersbook.com/2014/07/java-program-to-get-input-from-user/) 在本教程中,我們將看到**如何接受來自用戶**的輸入。我們使用`Scanner`類來獲取輸入。在下面的例子中,我們得到輸入字符串,整數和浮點數。為此,我們使用以下方法: 1)`public String nextLine()`:用于獲取`String`輸入 2)`public int nextInt()`:用于整數輸入 3)`public float nextFloat()`:用于`float`輸入 #### 例: ```java import java.util.Scanner; class GetInputData { public static void main(String args[]) { int num; float fnum; String str; Scanner in = new Scanner(System.in); //Get input String System.out.println("Enter a string: "); str = in.nextLine(); System.out.println("Input String is: "+str); //Get input Integer System.out.println("Enter an integer: "); num = in.nextInt(); System.out.println("Input Integer is: "+num); //Get input float number System.out.println("Enter a float number: "); fnum = in.nextFloat(); System.out.println("Input Float number is: "+fnum); } } ``` **輸出:** ```java Enter a string: Chaitanya Input String is: Chaitanya Enter an integer: 27 Input Integer is: 27 Enter a float number: 12.56 Input Float number is: 12.56 ``` **參考:** [掃描儀 Javadoc](https://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html)
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