How can I open files containing accents in Java?

(editing for clarification and adding some code)

Hello, We have a requirement to parse data sent from users all over the world. Our Linux systems have a default locale of en_US.UTF-8. However, we often receive files with diacritical marks in their names such as "special_á_ã_è_characters.doc". Though the OS can deal with these files fine, and an strace shows the OS passing the correct file name to the Java program, Java munges the names and throws a "file not found" io exception trying to open them.

This simple program can illustrate the issue:

import java.io.*;
import java.text.*;

public class load_i18n
{
  public static void main( String [] args ) {
    File actual = new File(".");
    for( File f : actual.listFiles()){
      System.out.println( f.getName() );
    }
  }
}

Running this program in a directory containing the file special_á_ã_è_characters.doc and the default US English locale gives:

special_�_�_�_characters.doc

Setting the language via export LANG=es_ES@UTF-8 prints out the filename correctly (but is an unacceptable solution since the entire system is now running in Spanish.) Explicitly setting the Locale inside the program like the following has no effect either. Below I've modified the program to a) attempt to open the file and b) print out the name in both ASCII and as a byte array when it fails to open the file:

import java.io.*;
import java.util.Locale;
import java.text.*;

public class load_i18n
{
  public static void main( String [] args ) {
    // Stream to read file
    FileInputStream fin;

    Locale locale = new Locale("es", "ES");
    Locale.setDefault(locale);
    File actual = new File(".");
    System.out.println(Locale.getDefault());
    for( File f : actual.listFiles()){
      try {
        fin = new FileInputStream (f.getName());
      }
      catch (IOException e){
        System.err.println ("Can't ope