Case-insensitive File.equals on case-sensitive file system

This method will tell you if a file with the exact name in question exists (the path portion is not case sensitive).

public static boolean caseSensitiveFileExists(String pathInQuestion) {
  File f = new File(pathInQuestion);
  return f.exists() && f.getCanonicalPath().endsWith(f.getName());
}

Get the list of files from the directory (File.list()) and compare the names using equalsIgnoreCase().