Question

好的 - 所以这是一个非常简单的java程序。我一直收到以下错误。阅读完文档后，我确保所有扫描程序语句都已正确编码。我做错了什么？

Enter working hours: Exception in thread "main" java.util.NoSuchElementException
    at java.util.Scanner.throwFor(Unknown Source)
    at java.util.Scanner.next(Unknown Source)
    at java.util.Scanner.nextDouble(Unknown Source)
    at WeeklyWages.main(WeeklyWages.java:12)

以下是代码：

import java.util.*;

public class WeeklyWages {

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

    public static void main(String[] args) {

        double hrsworked, payrate, wages;

        System.out.print("Enter working hours: ");
        hrsworked = console.nextDouble();

        System.out.println();

        System.out.print("Enter the payrate: ");
        payrate = console.nextDouble();

        System.out.println();

        if (hrsworked > 40)
            wages = 40.0 * payrate + 1.5 * payrate * (hrsworked - 40.0);
        else
            wages = hrsworked * payrate;

        System.out.printf("Hours worked = .2%f %n", wages);
        System.out.println();

    }
}

Answer 1

Ok看起来像Sublimetext有问题。我只是通过dos中的javac编译它，它工作。奇怪的。

Answer 2

我认为你的语法错误，并没有导入库“java.util.scanner”
这是适合你的代码

import java.util.Scanner;

公共类MainPrintThread {

public static void main(String args[])

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



        double hrsworked, payrate, wages;

        System.out.print("Enter working hours: ");
        hrsworked = console.nextDouble();

        System.out.println();

        System.out.print("Enter the payrate: ");
        payrate = console.nextDouble();

        System.out.println();

        if (hrsworked > 40)
            wages = 40.0 * payrate + 1.5 * payrate * (hrsworked - 40.0);
        else
            wages = hrsworked * payrate;

        System.out.printf("Hours worked = .2%f %n", wages);
        System.out.println();

    }



}

简单的java程序，扫描程序错误

2 个答案: