扫描文本文件时计算最大值时出错

Question

我最近刚刚开始学习 Java，正在做练习。

我正在尝试读取文本文件并显示最大值、最小值和平均值。到目前为止，我能够输出平均值，但在尝试找到最大值时遇到了问题。我计划将最小值设置为最大值+1，但我似乎对最大值有疑问。代码如下，错误输出如下。谁能告诉我哪里错了？

谢谢！

import java.io.*;
import java.util.Scanner;

public class Main {

    public static void main(String[] args)
    {
        String fileName= "scratch.txt";
        Scanner inputStream=null;
        try
        {
            inputStream = new Scanner (new File (fileName));
        }
        catch (FileNotFoundException exception)
        {
            System.out.println("The file: " +fileName +" has not been found, exiting program.");
            System.exit(0);
        }
        int sum=0;
        int i=0;
        int max=0;
        int min=0;
        while (inputStream.hasNextInt())
        {
            if(inputStream.nextInt()>max)
            {
                max=inputStream.nextInt();
            }
            sum=+inputStream.nextInt();
            i++;
        }
        System.out.println(max);
        System.out.println("The integer average is: " +sum/i);
        inputStream.close();
    }
}

错误输出：

Exception in thread "main" java.util.NoSuchElementException
    at java.base/java.util.Scanner.throwFor(Scanner.java:945)
    at java.base/java.util.Scanner.next(Scanner.java:1602)
    at java.base/java.util.Scanner.nextInt(Scanner.java:2267)
    at java.base/java.util.Scanner.nextInt(Scanner.java:2221)
    at Main.main(Main.java:27)