无法找到或加载主类错误

Question

由于某种原因，我收到此错误“错误：无法找到或加载主类SumOfPolynovmials”但这是一个我从未创建过的类。为什么我收到此错误？它应该运行SumOfPolynomials而不是SumOfPolynovmials。蚀。

代码：

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

class SumOfPolynomials {

/**
 * @param args
 * @throws FileNotFoundException 
 */
public static void main(String[] args) throws FileNotFoundException {

     List<Map<Integer, Integer>> listOfPolynomials = new ArrayList<Map<Integer, Integer>>();
    File polyfile = new File("polyinput.txt");
    Scanner read = new Scanner(polyfile);
    while (read.hasNextLine()){
        String LINE = read.nextLine();
        String[] lineSpillted =LINE.split(";");
        Map<Integer, Integer> poynomial = new HashMap<Integer, Integer>();
        for(int i =1;i<lineSpillted.length-1;i=i+2){                //i starts from ignores P1,P2 etc

             poynomial.put(Integer.parseInt(lineSpillted[i+1]), Integer.parseInt(lineSpillted[i]));

        }
        listOfPolynomials.add(poynomial);
        }

    read.close();

    Map<Integer, Integer> result = polynomialSum(listOfPolynomials.get(0), listOfPolynomials.get(1));

    if(listOfPolynomials.size()>2){

        for(int i=2;i<listOfPolynomials.size()-1;i++){

            result = polynomialSum(result,listOfPolynomials.get(i));
        }
    }
    // print out the SUM as VALUEX^KEY
    System.out.println();
    int c = 0;
    for (Map.Entry<Integer, Integer> entry : result.entrySet()) {

        System.out.print(entry.getValue() + "X^" + entry.getKey());
        c++;
        if (c != result.size()) {
            System.out.print("+");
        }
    }

}

public static Map<Integer, Integer> polynomialSum(Map<Integer, Integer> arg1,
        Map<Integer, Integer> arg2) {

    Map<Integer, Integer> SUM = new HashMap<Integer, Integer>();

    for (Map.Entry<Integer, Integer> entry : arg1.entrySet()) {

        Integer power = entry.getKey();
        Integer coeff1 = entry.getValue();
        Integer coefficient;
        if (arg2.containsKey(power)) {
            coefficient = arg2.get(power) + coeff1;
        } else {
            coefficient = coeff1;
        }
        SUM.put(power, coefficient);
    }

    for (Map.Entry<Integer, Integer> entry : arg2.entrySet()) {

        if (SUM.containsKey(entry.getKey())) {
            continue;
        } else {
            SUM.put(entry.getKey(), entry.getValue());
        }

    }

    return SUM;
}}