sardine cli empty ACES

sardinetest.java

package org.courville.sardinetest;

import com.github.sardine.*;

import java.io.IOException;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        // arguments are: user password url
        Sardine sardine = SardineFactory.begin();
        sardine.setCredentials(args[0], args[1]);
        String url = args[2];

        DavAcl acl;
        try {
            acl = sardine.getAcl(url);
            System.out.println("fromUri owner=" + acl.getOwner() + ", group=" + acl.getGroup());
            List<DavAce> aces = acl.getAces();
            boolean canRead = false;
            boolean canWrite = false;
            if (! aces.isEmpty()) {
                canRead = (aces.get(0).getGranted().get(0) == "read");
                canWrite = (aces.get(0).getGranted().get(1) == "write");
            } else {
                System.out.println("fromUri: aces empty for uri=" + url);
            }
            System.out.println("fromUri: uri=" + url + ", canWrite=" + canWrite + ", canRead=" + canRead);
        } catch (IOException e) {
            System.out.println("IOException in getAcl");
        }
        //List<DavResource> resources = sardine.list(httpUri.toString());
    }
}

Running the program I get empty ACES:

fromUri owner=null, group=null
fromUri: aces empty for uri=https://redacted/file.txt
fromUri: uri=https://redacted/file.txt, canWrite=false, canRead=false