BufferedReader class of java

Well nothing else I can say THANK YOU to those who were interested in answering and telling them that I found a solution to my problem was WORK DIRECT WITH ASCII This is the code fragment that solves my problem

public String AbrirATexto(File archivo){
            String contenido="";
            try {
                entrada = new FileInputStream(archivo);
                int ascci;
                while((ascci = entrada.read())!= -1){
                    char carcater = (char)ascci;
                    contenido += carcater;
                }
            } catch (Exception e) {
            }
            return contenido;
        }

It may be that the problem has to do with the encode look at the following line:

BufferedReader in = new BufferedReader(
    new InputStreamReader(new FileInputStream(fileDir), "UTF8"));

Check the Charset of your file and Check that you need to visualize it.

If you use the constructor InputStreamReader(InputStream is, String charset) try first with:

• "ISO-8859-1" (most likely)
• "US-ASCII"
• "UTF-8" (less likely)

You can exclude the Charset by default in the tests, you get it with InputStreamReader#getEncoding() .

Alternatively you can use Charset#availableCharsets() to get a map of the Charset available to read the file.

Unfortunately, you can not determine the code of a text file, you can only check for errors and thus determine that no is the suspected code.

Even if it were a file in utf-8 that is then shown in ISO or ASCII, you would get 2-byte combinations instead of unknown singular characters, so you're probably trying to show an ISO-8859 file in a utf-8 output.