MailParse from mail tingi Thunderbörd

MailParse.java

package org.hans.uwe.werner;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;

public class MailParse {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
                // data.txt contains the Mail Data
		String s = readFile("data.txt");
		String[] emailStrings = getEmails(s);
		for(String emailString : emailStrings){
			System.out.println(emailString);
		}
	}
	
	private static String[] getEmails(String s){
		ArrayList<String> stringsArrayList = new ArrayList<String>();
		String[] strings = s.split("=");
		for(String string : strings){
			if(string.contains("@") && string.contains(".")){
				string = (String) string.subSequence(0, string.indexOf(")"));
				stringsArrayList.add(string);
			}
		}
		return stringsArrayList.toArray(new String[stringsArrayList.size()]);
	}
	
	private static String readFile(String path){
		File file = new File(path);
		FileInputStream fStream = null;
		try {
			fStream = new FileInputStream(file);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		BufferedReader reader = new BufferedReader(new InputStreamReader(new DataInputStream(fStream)));
		String string = "";
		String data = "";
		try {
			while((string = reader.readLine()) != null)
			{
				data += string;
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return data;
	}
}