Java character set / character encoding

I have a Spanish file, so it is full of the following characters:

á é í ó ú ñ Ñ Á É Í Ó Ú

I have to read the document, so I do this:

fr = new FileReader(ficheroEnTrada);
BufferedReader rEnTrada = new BufferedReader(fr);

String linea = rEnTrada.readLine();
if (linea == null) {
logger.error("ERROR: Empty file.");
return null;
} 
String delimitador = "[;]";
String[] tokens = null;

List<String> token = new ArrayList<String>();
while ((linea = rEnTrada.readLine()) != null) {
    // Some parsing specific to my file. 
    tokens = linea.split(delimitador);
    token.add(tokens[0]);
    token.add(tokens[1]);
}
logger.info("List of tokens: " + token);
return token;

When I read the token list, all special characters disappear and are replaced by this character:

Ó = Ó
Ñ = Ñ

Wait

What happened? I have never encountered the charsets problem (I assume it is the charset problem) Is it because of this computer? What can I do?

Any additional suggestions will be appreciated and I am learning! thank you!

Solution

You need to specify the relevant character encoding

BufferedReader rEnTrada  = new BufferedReader(
    new InputStreamReader(new FileInputStream(fr),"UTF-8"));