Question

我有这个程序来反转单词的顺序，但输入搞砸了。这是我的输出日志。

1
this is a trial
Exception in thread "main" java.util.InputMismatchException
    at java.util.Scanner.throwFor(Scanner.java:864)
    at java.util.Scanner.next(Scanner.java:1485)
    at java.util.Scanner.nextInt(Scanner.java:2117)
    at java.util.Scanner.nextInt(Scanner.java:2076)
    at Store_Credit.main(Store_Credit.java:13)

Process finished with exit code 1

而且，这是我的代码：

import java.util.Scanner;

public class Reverse_Words {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int N;
        N = scanner.nextInt();
        for(int i = 0; i < N; i++) {
            int h  = i+1;
            String[] s = scanner.nextLine().split(" ");
            System.out.print("Case #"+h+": ");
            for(int j = s.length-1; j >=0; j++) {
                System.out.print(s[j]+" ");
            }
            System.out.println();
        }
    }
}

Answer 1

尝试执行此操作并检查是否仍然出现错误

public static void main(String[] args) {
        @SuppressWarnings("resource")
        Scanner scanner = new Scanner(System.in);
        int n;
        System.out.println("enter number");
        n = scanner.nextInt();
        for(int i = 0; i < n; i++) {
            int h  = i+1;

            System.out.println("enter string");

            String[] s = scanner1.nextLine().split(" ");
            System.out.print(s.length);
            System.out.print("Case #"+h+": ");
            for(int j = s.length-1; j >=0; j--) {
                System.out.print(s[j]+" ");
            }
            System.out.println();
        }
    }

在最后一个for循环中递减j值，即。，j--（不是j ++）

线程＆＃34; main＆＃34;中的例外情况使用Scanner时出现java.util.InputMismatchException

1 个答案: