Submitting code on CodeEval site

Question

A Java program on CodeEval had to accept a file path as an argument. I used a command line argument to do this, but I get an exception as below when I submitted my code on CodeE

Answer 1

This happens if you don't check to see if there are any more tokens (by calling hasMoreTokens). If no more tokens exist and you call nextToken, you will get this exception. However, without seeing the rest of your code, there is no way to know what is actually happening.

Answer 2

Here's the boilerplate Java code that I use for my Codeeval code. The specific problem code generally goes in the processLine method. I don't use Scanner or StringTokenizer. I use the String split method to process the input.

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class Main implements Runnable {

    private String fileName;

    public Main (String fileName) {
        this.fileName = fileName;
    }

    @Override
    public void run() {
        try {
            processFile();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private void processFile() throws IOException {
        BufferedReader br = new BufferedReader(
                new FileReader(fileName));
        String line = "";
        while ((line = br.readLine()) != null) {
            processLine(line);
        }
        br.close();
    }

    private void processLine(String line) {
        System.out.println(line);
    }

    public static void main(String[] args) {
        new Main(args[0]).run();
    }

}

Answer 3

Firstly, Check the name of class.Class name should be 'Main'. Second you have to give all the imports in CodeEval Editor which you are using in your program.