FileSystemStopwords.java

package wordcount.io;

import wordcount.domain.Stopwords;

import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.nio.file.Files;
import java.util.Collection;

import static java.util.Collections.emptyList;

public class FileSystemStopwords implements Stopwords {

    private String filePath;

    public FileSystemStopwords(String filePath) {
        this.filePath = filePath;
    }

    @Override
    public Collection<String> stopwords() {
        URL url = getClass().getClassLoader().getResource(filePath);
        if (url == null) {
            return emptyList();
        }
        File f = new File(url.getFile());
        try {
            return Files.readAllLines(f.toPath());
        } catch (IOException e) {
            return emptyList();
        }
    }

}