FileUtils.java

package utils;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class FileUtils {

	public static Set<String> readFileAsSet(String filePath, boolean toLowerCase, boolean trim) {
		String temp = "";
		HashSet<String> lines = new HashSet<String>();
		try {
			BufferedReader in = new BufferedReader(new FileReader(filePath));
			while ((temp = in.readLine()) != null) {
				if (temp.length() > 0) {
					String UTF8Str = new String(temp.getBytes(), "UTF-8");
					if (trim)
						UTF8Str = UTF8Str.trim();
					lines.add(toLowerCase ? UTF8Str.toLowerCase() : UTF8Str);
				}
			}
			in.close();
		} catch (FileNotFoundException e) {
			System.out.println("File not found, in reading file as list: " + e.getMessage());
		} catch (IOException e) {
			System.out.println("IOException in reading file as list: " + e.getMessage());
		}
		return lines;
	}

}