java - 为什么我的 Scan.nextDouble 给出 java 错误？

Question

我是一名真正的新程序员，我一直在练习以变得更好。我讨厌寻求帮助，我确信这是一个类(class)的幼稚问题，但我无法弄清楚。它给出的错误是这样的:它给了我这个错误:Lab7d.java:28:错误:找不到符号 newArray[i] = scan.nextDouble()。谢谢!

import java.util.Scanner;
import java.util.Arrays;

public class Lab7d {
   public static void main (String[] args){

      // Lab7d, [Naqeeb Nazir], [Masc 1555]

      Scanner scan = new Scanner(System.in);
      int numInputs = scan.nextInt();


      double[] quakes = new double[numInputs];
      quakes = init(numInputs, scan.nextDouble());


      getMagnitudeStats(quakes);


      print(quakes);

      }


      public static double[] init(int a, double n) {
       double[] newArray = new double[a];
       for (int i = 0; i < n; i++) {
        newArray[i] = scan.nextDouble();
          }
          return newArray;
      }


       public static void getMagnitudeStats(double[] myArray) {
         double Maximum = 0.0;
         double Minimum = 0.0;
         double Average = 0.0;
         int severeEarthquakes = 0;

         if (Minimum > 0 && Minimum <= 10.0) Minimum = myArray[0];
         else Minimum = 1.0;

         if (Maximum > 0 && Maximum <= 10.0) Maximum = myArray[0];
         else Maximum = 1.0;




         System.out.println("Maximum: " + Maximum);
         System.out.println("Minimum: " + Minimum);
         System.out.println("Average: " + Average);
         System.out.println("Severe earthquakes: " + severeEarthquakes);


         }



      public static void print(double[] myArray1) {
         for (int i = 0; i < myArray1.length; i++) {
            System.out.print(myArray1[i] + " ");
            }
            System.out.println("");
         }

   }

Answer 1

scan是main中的局部变量，你不能在init()这里访问它newArray[i] = scan.nextDouble();