线程中的Uknown异常；“主要”；java.util.NoSuchElementException

我不确定为什么我会收到这个错误，到目前为止，我已经有一个网站的成员好心地帮助我，但我们都不确定。任何帮助都将不胜感激，谢谢

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.InputStreamReader;
import java.util.Scanner;

public class Assignment3 {

static Scanner console = new Scanner(System.in);

public static void main(String[] args) throws FileNotFoundException {

    Scanner input = new Scanner(new FileReader("AssistantHoursAndRates.txt"));

    double UnitRM1;
        System.out.println("Enter recommended maximum staff cost of Unit 1");
            UnitRM1 = console.nextDouble ();
                System.out.println("Recommended maximum staff cost of Unit1 = "+UnitRM1);

                System.out.printf("%10s\n", " ");

    double UnitRM2;
            System.out.println("Enter recommended maximum staff cost of Unit 2");
                UnitRM2 = console.nextDouble ();
                    System.out.println("Recommended maximum staff cost of Unit2 = "+UnitRM2);

                    System.out.printf("%10s\n", " ");

    double UnitRM3;
            System.out.println("Enter recommended maximum staff cost of Unit 3");       
                UnitRM3 = console.nextDouble ();        
                    System.out.println("Recommended maximum staff cost of Unit3 = "+UnitRM3);   

                    System.out.printf("%10s\n", " ");

    double UnitRM4;
            System.out.println("Enter recommended maximum staff cost of Unit 4");
                UnitRM4 = console.nextDouble ();
                    System.out.println("Recommended maximum staff cost of Unit4 = "+UnitRM4);   

                    System.out.printf("%10s\n", " ");

     double UnitRM5;            
             System.out.println("Enter recommended maximum staff cost of Unit 5");      
                UnitRM5 = console.nextDouble ();        
                    System.out.println("Recommended maximum staff cost of Unit5 = "+UnitRM5);   

                    System.out.printf("%10s\n", " ");

     double UnitRM6;            
             System.out.println("Enter recommended maximum staff cost of Unit 6");              
                UnitRM6 = console.nextDouble ();       
                    System.out.println("Recommended maximum staff cost of Unit6 = "+UnitRM6);

                    System.out.printf("%10s\n", " ");

     double UnitRM7;
             System.out.println("Enter recommended maximum staff cost of Unit 7");
                UnitRM7 = console.nextDouble ();
                    System.out.println("Recommended maximum staff cost of Unit7 = "+UnitRM7);

                    System.out.printf("%10s\n", " ");

     double UnitRM8;            
             System.out.println("Enter recommended maximum staff cost of Unit 8");      
                UnitRM8 = console.nextDouble ();        
                    System.out.println("Recommended maximum staff cost of Unit8 = "+UnitRM8);   

                    System.out.printf("%10s\n", " ");

     double UnitRM9;                
            System.out.println("Enter recommended maximum staff cost of Unit 9");               
               UnitRM9 = console.nextDouble ();     
                   System.out.println("Recommended maximum staff cost of Unit9 = "+UnitRM9);




    double[] totals = new double[9];        
    int unit = 1;
    while (input.hasNextLine()) {
        String line = input.nextLine();
        System.out.println(line);

        double total = 0;

        int assistants = input.nextInt();
        System.out.println("Number of Assistants " + assistants);
        System.out.println("Hours  Rate");
        System.out.println("------------");
        for (int i = 0; i < assistants; i++) {
            int hours = input.nextInt();
            System.out.print(hours + "     ");
            double rate = input.nextDouble();
            System.out.println(rate);               
            total += (hours * rate);
        }


System.out.println("Total cost of Unit " + unit + " is " + total);
System.out.println();   
totals[unit - 1] = total;
    unit++;



        if (input.hasNextLine()) {
            input.nextLine();
            input.next();



        } 


    }


        System.out.println("Comparisons are as follows;");       

    }


}

给出的错误

Exception in thread "main" java.util.NoSuchElementException
at java.util.Scanner.throwFor(Unknown Source)
at java.util.Scanner.next(Unknown Source)
at Assignment3.main(Assignment3.java:108)

错误指向第108行

input.next();

最终打印输出

System.out.println（“比较如下；”根本不打印。
您正在与

input.hasNextLine()

这说明至少还有一行。
然后你读那一行，不检查是否有额外的数据可供调用

input.next();

然后得到一个例外。这意味着只有一行，然后是文件的结尾：）

input.next();