年轻的物理学家关于代码强制的问题（JAVA）运行时错误[关闭]

Question

我是CodeForces的新手，当我在NetBeans中运行这段代码时，它可以正常工作，但当我在CodeForces上提交它时，它会在测试1上给我带来运行时错误。怎么了？这就是问题所在

这是我的代码：

package cw;

import java.text.NumberFormat;
import java.util.Scanner;

public class CW {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Scanner ourNumber = new Scanner(System.in);
        int VasyaNumber = ourNumber.nextInt();
        String result = Vasya(VasyaNumber);
        System.out.println(result);

    }

    public static String Vasya(int number) {
        String saying;
        int ours = 0;
        int resultone = 0;
        int resulttwo = 0;
        int resultthree = 0;
        while (ours < number) {
            Scanner yourNumber = new Scanner(System.in);
            int x = yourNumber.nextInt();
            int y = yourNumber.nextInt();
            int z = yourNumber.nextInt();
            resultone += x;
            resulttwo += y;
            resultthree += z;
            ours += 1;
        }
        if (resultone == 0 && resulttwo == 0 && resultthree == 0) {
            saying = "YES";
        } else {
            saying = "NO";
        }
        return saying;
    }

}

Answer 1

因为你是初学者，所以我有一些建议给你。
1。拥有多个扫描器（在同一流上）是一个非常糟糕的做法，因为扫描器使用他们共享的流。
解决方案：对于控制台应用程序，使用单个扫描器从系统中读取。

2.在笔记本电脑上解决问题后，您必须注释这一行包CW；将其提交给在线法官，否则，将给您以下错误：

Error: Could not find or load main class CW
Caused by: java.lang.ClassNotFoundException: CW

更新

我已经修改了您的代码，现在已经工作了：

//package cw; // you must comment this line because will give you error if upload it to online Judge
import java.text.NumberFormat;
import java.util.Scanner;
import java.util.*;


public class CW 
{
    public static void main(String[] args) 
    {
        Scanner ourNumber = new Scanner(System.in);
        int VasyaNumber = ourNumber.nextInt();
        // Updated , send scanner object as Parameter 
        String result = Vasya(VasyaNumber , ourNumber);
        System.out.println(result);
    }

    public static String Vasya(int number , Scanner yourNumber) 
    {
        String saying;
        int ours = 0;
        int resultone = 0;
        int resulttwo = 0;
        int resultthree = 0;
        while (ours < number) 
        {
            int x = yourNumber.nextInt();
            int y = yourNumber.nextInt();
            int z = yourNumber.nextInt();
            resultone += x;
            resulttwo += y;
            resultthree += z;
            ours += 1;
        }
        
        if (resultone == 0 && resulttwo == 0 && resultthree == 0) 
        {
            saying = "YES";
        } 
        else 
        {
            saying = "NO";
        }
        return saying;
    }

}

希望对你有所帮助，祝你好运，万事如意！