Question

我正在尝试处理异常，但是我收到了其他消息。我不知道为什么收到这个。

Exception in thread "main" java.util.InputMismatchException
    at java.base/java.util.Scanner.throwFor(Scanner.java:939)
    at java.base/java.util.Scanner.next(Scanner.java:1594)
    at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
    at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
    at P4.main(P4.java:28)

我想处理ArrayOutOfBoundsException。谢谢！

public class P4 {
    public static void main(String args[]) {
        Scanner keyboard=new Scanner(System.in);
        ArrayList <Double> sir = new ArrayList<Double>();
        System.out.println("Please insert doubles: ");
        do {
            double x=keyboard.nextDouble();
            sir.add(x);
        }while(keyboard.hasNextDouble());
        System.out.println("Elements in the array are: " + sir);
        System.out.println("Enter the index of the required element: ");
        try {
            int element = keyboard.nextInt();
            System.out.println("Element in the given index is :: "+sir.get(element));
        } catch(ArrayIndexOutOfBoundsException e) {
            System.out.println("The index you have entered is invalid");
        }
    }
}

Answer 1

我从catch(ArrayIndexOutOfBoundsException e)修改为 catch(IndexOutOfBoundsException e)。这就是答案。

为什么会出现java.util.InputMismatchException？

1 个答案: