在

Question

该程序编译好但后来， 运行代码后，我收到一组错误：

Exception in thread "main" java.util.InputMismatchException
at java.util.Scanner.throwFor(Scanner.java:864)
at java.util.Scanner.next(Scanner.java:1485)
at java.util.Scanner.nextInt(Scanner.java:2117)
at java.util.Scanner.nextInt(Scanner.java:2076)
at ParkRunnerClass.main(ParkRunnerClass.java:48)

根据我的理解，这是因为进入的数据与扫描仪正在寻找的数据不匹配，为了解决这个问题我尝试使用try（在mycode中）并捕获但是没有用。

这是我以前的工作的积累，首先尝试而不会给我带来任何问题，当我检查它停止的新文件时：

  

参赛者数量为：1

     

Runner条形码是：A0000005

     

跑步者的名字是：

凭借用户输入，代码可以正常工作 所以问题似乎与名称的输入有关。 我不确定应该如何解决这个问题。

这是存储在file.txt中的短输入， 为了清楚起见，较长的版本有10个“跑步者”将评论值，但这些评论不在文件中

  

1 //跑步者数量

     

Mary Bloggs //亚军名称

     

1996年//亚军诞生年

     

3我不知道这个值是什么，所以我只是接受并按原样把它拿出来

     

2我不知道这个值是什么，所以我只是接受并按原样把它拿出来

     

女//跑步者性爱

     

5 //跑步者做了这个，然后设定循环运行的次数

     

Marley Park //公园名称

     

23.5

     马利公园

     

22.9

     马利公园

     

23.6

     马利公园

     

23.0

     马利公园

     

22.99

public class ParkRunnerClass
            {
                public static void main(String args[]) throws IOException
{

        //Scanner input = new Scanner(System.in);
        Scanner fileInput = new Scanner(new File("file.txt"));
        PrintStream printStreamOut = new PrintStream(new File("outputfile.txt"));

        String Sid = "A000000"; // barcode template


        //-----Park Runner ----//
        ParkRunner parkrunner1 = new ParkRunner(); // runner object

        RecordNewRun runnermm = new RecordNewRun(); //min max object

        RecordNewRun[] runners = new RecordNewRun[5]; // runner array

        float[] times = new float[runners.length]; // size of the array for calc avg min/mix
        float avg = 0;
        float sum = 0;
        int inputInt;
        int inputIntrun;
        int LapCount;



        inputIntrun = fileInput.nextInt();
        printStreamOut.println("Number of runners is:" + inputIntrun);


        do {
        parkrunner1.setRunnerId(Sid);
        printStreamOut.println("Runner barcode is: " + parkrunner1.getRunnerId()); //runner barcode checked

        parkrunner1.setName(fileInput.nextLine());
        printStreamOut.println("The name for runner is: " + parkrunner1.getName());

        parkrunner1.setAge(fileInput.nextInt());
        printStreamOut.println("runner age is:" + parkrunner1.getAge());

        inputInt = fileInput.nextInt();
        printStreamOut.println("i dont know what this number is for:" + inputInt); // used for holding int

        inputInt = fileInput.nextInt();
        printStreamOut.println("i dont know what this number is for:" + inputInt); // used for holding int

        parkrunner1.setGender(fileInput.next().charAt(0));
        printStreamOut.println("runner gender M for male F for female:" + parkrunner1.getGender());


        parkrunner1.setLaps(fileInput.nextInt());
        LapCount = parkrunner1.getLaps();
        printStreamOut.println("Laps ran by runner is:" + parkrunner1.getLaps());

        for(int i = 0; i < LapCount; i++)
            {

        parkrunner1.setParkName(fileInput.nextLine());
        printStreamOut.println("park name is: " + parkrunner1.getParkName());

        //printStreamOut.println("\nPlease enter the time taken of a park run : ");
        times[i] = fileInput.nextFloat();
        sum = sum + times[i];

        runnermm.setSum(sum);
        runnermm.setAvg(sum);
        //input.nextLine();

            }

        runnermm.getMinMax(times); // puts int array values into ohject runnermm (minmax) of RecordNewRun
        printStreamOut.println("\nThe sum of park runners time spend running is: " + runnermm.getSum());
        printStreamOut.println("\nThe average time of park runners time spent per lap is: " + runnermm.getAvg());


    }while(fileInput.hasNext());

    fileInput.close();





   }

}