java.util.Scanner出错

Question

import java.util.Scanner;

public class Solution {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int i = scan.nextInt();
        String s = scan.nextLine();
        double d = scan.nextDouble();
        System.out.println("String: " + s);
        System.out.println("Double: " + d);
        System.out.println("Int: " + i);
    }
}

Answer 1

您的代码已运行，但您应添加一些用户提示：

SharedPreferences

应该注意的是，尝试获取字符串输入时会遇到问题。您需要在import java.util.Scanner; public class TimeTest { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println("Input integer:"); int i = scan.nextInt(); System.out.println("Input string:"); String s = scan.nextLine(); System.out.println("Input double:"); double d = scan.nextDouble(); System.out.println("String: " + s); System.out.println("Double: " + d); System.out.println("Int: " + i); } }

之后添加另一个String s = scan.nextLine();来清除输入内容