为什么我会得到这个错误？（双数组方法）

Question

import java.util.Scanner;
public class SearchArray {
    public static void main (String args[]){
        //imput array size
        //imput array digits
        //imput element to search for

        Scanner scan = new Scanner(System.in);
        int size = scan.nextInt();
        double array[] = new double[size];

        for(int i = 0; i <= array.length-1; i++){
           array[i] = scan.nextDouble();
        }

        double digit = scan.nextDouble();
        boolean bool = findElement(array,digit);

        if(bool == true){
           System.out.println(digit + " was found in the array");
        }else if(bool == false){
           System.out.println(digit + " was NOT found in the array");
        }
    }

    public static boolean findElement(double[] array, double digit){
        boolean bool = false;
        //accepts double array, double  & returns boolean
        //check if numnber entered is in the array

        for(int i = 0; i <= array.length-1; i++){
            if(array[i] == digit){
               bool = true;
            }else{
               bool = false;
            }
        }

        return bool;
    } 
}

Answer 1

扫描器引发的公共类InputMismatchException，以指示检索的令牌与预期类型的模式不匹配，或令牌超出预期类型的范围。

看看下面的答案:https://stackoverflow.com/a/14027583/7421645，并试着理解为什么要获得异常，例如，尝试捕获异常：

try {
    // ...
} catch (InputMismatchException e) {
    System.out.print(e.getMessage()); //try to find out specific reason.
}

我还会尝试先将测试数据作为字符串输入，至少直到您确定预期的输入提供预期的输出为止。

String input = "1 fish 2 fish red fish blue fish";
Scanner s = new Scanner(input);