I've this code
 //write a file in a specific directory
public static void writeFile(String comment, String outputFileName) {
    FileWriter fWriter = null;
    BufferedWriter writer = null; 
    try {
        fWriter = new FileWriter(outputFileName,true);
        writer = new BufferedWriter(fWriter);
        writer.write(comment);
        writer.newLine();
        writer.close();
    } catch (Exception e) {
        System.out.println(e.getMessage());
    }
}
But when I save the file in outputFileName, it lost every special character.
File output format is .txt
Some solution?
Thanks a lot
                        
FileWriter uses the platform-default encoding. It's very rarely a good idea to use that class, IMO.
I would suggest you use an OutputStreamWriter specifying the encoding you want - where UTF-8 is almost always a good choice, when you have a choice.
If you're using Java 7 or higher, Files.newBufferedWriter is your friend - and with Java 8, there's an overload without a Charset parameter, in which case UTF-8 is used automatically.
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