how do I read and write a file using UTF8?

Hi. How do I read and write a file using UTF8?

I have a file that's UTF-8 - for development purposes it just consists
of a space, an mdash (hex 8212) and another space. I'm using the
following Java code...

import java.io.*;

class UTF8 {
    public static void main(String[] args) throws Exception {
        System.setProperty("file.encoding", "UTF-8");

        File xmlFile = new File("mdash.txt");
        FileInputStream fileInputStream = new FileInputStream
(xmlFile);
        byte[] fileBufferByteArray = new byte[(int) xmlFile.length()];
        fileInputStream.read(fileBufferByteArray);
        String fileBufferString = new String(fileBufferByteArray,
"UTF-8");
        PrintWriter p = new PrintWriter(System.out);
        p.print(fileBufferString);
        p.close();
    }
}

and running it like this...

java UTF8 > x

but x always ends up containing " ? " (a space, a question mark, then
a space). How can I make this work?

Thanks in advance for your help!

Ralph