JAVA ZipFile entries() method doesn't see directories

Question

I'm working on digital documents and digital signatures and I've stumbled upon a problem.

Input: documentX.adoc - zip file with files and folders inside.

I need to get all the content in the input file - a list of dirs and files.

What do I do:

ZipFile adocFile = new ZipFile(documentXFileName);
ArrayList <String> adocFiles = new ArrayList<String>();
Enumeration <? extends ZipEntry> entries;
entries = adocFile.entries();
for (entries = adocFile.entries(); entries.hasMoreElements();)
{
    adocFiles.add(entries.nextElement().getName());
}

I've tried to create ArrayList < ZipEntry > and add ZipEntries instead of names - still nothing. Maybe there is some other way? Strange thing is, that ZipEntry has a .isDirectory() method...

Thanks for help, Martin

Answer 1

From the documentation:

A directory entry is defined to be one whose name ends with a '/'.

It is not necessary to store directories in a ZIP file - they are optional entries. It is possible to store a byte sequence with the path foo/bar.txt without an entry called foo. Zip tools may provide the illusion that such things exist within the archive even if they don't.