CODEWITHSUNDEEP
javafilespecial-charactersreadfile
Gambrinus
Gambrinus

Reputation: 2136

.listFiles() returned file object returns false on .exists() - file contains special character(s)

I've got a java application zipping a given directory. A file is omitted containing a special character (e.g. an umlaut - ä, ö, etc.). Debugging showed, that the file is omitted because it does not exist

if(file.exists()) {
  //zip it
} else {
  System.err.println("file " + file.getAbsolutePath() + " does not exist!");
}

The thing is - I retrieve the file object from

File[] files = directory.listFiles();

and then iterrate through them.

for(File file : files) {
  if(file.exists()) {
    //zip file
  } else {
    System.err.println("...");
  }
}

What I saw is, that file.getAbsolutePath() shows me the following path /tmp/myspecialChar?File.txt instead of /tmp/myspecialCharÖFile.txt.

Any ideas how to get hold of the File. Unfortunately all special characters will be translated into "?" so I cannot implement a mapping. Listing names returns also "?" instead of the correct special character.

Before I forget - the JVM version is 1.6.31.

Upvotes: 3

Views: 855

Answers (2)

Gerret
Gerret

Reputation: 3046

I am not sure if it works but try to use:

Ä, ä -> \u00c4, \u00e4
Ö, ö -> \u00d6, \u00f6
Ü, ü -> \u00dc, \u00fc

Replace the äöü with the \u at the right place for example:

for (File file : files) {
    String newfilename = file.getName().replace('Ü', \u00dc);
}

I am sorry if that dosen't work!

Upvotes: 0

Ravi K Thapliyal
Ravi K Thapliyal

Reputation: 51711

You need to set the file.encoding system property of your JVM

-Dfile.encoding=UTF-8

Please, note this has to be done at the start-up as a java parameter. Doing it later with a System.setProperty() won't help as the value (that comes from the host OS) is already cached by then.

Upvotes: 2

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