How to sort a SimpleFeatureCollection using GeoTools?

Question

I have a featurecollection:

SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(dbFeatureType);
SimpleFeatureCollection collection = FeatureCollections.newCollection();
while (mifReader.hasNext()){      
  in = (SimpleFeatureImpl) mifReader.next();
  SimpleFeature dbFeature = featureBuilder.buildFeature(null);
  for(AttributeDescriptor ad : adList){
    String name = ad.getLocalName();
    Object attrValue;
    attrValue = in.getAttribute(name);
    if(attrValue instanceof String){
      String string3 = new String((attrValue.toString()).getBytes("ISO-8859-1"), "cp1251");
      if(name.trim().equalsIgnoreCase(kadname.trim())){
        dbFeature.setAttribute("kadnum", string3);
      }
    }
    if (attrValue instanceof Geometry){
        idn++;
        com.vividsolutions.jts.geom.Geometry geom = (Geometry) in.getAttribute(name);
        dbFeature.setAttribute("id", idn);
        System.out.println("after insrt="+idn);
        dbFeature.setAttribute("deleted", deleted);
        dbFeature.setAttribute("the_geom", geom);
        dbFeature.setAttribute("status_id", status_id);

    }
    collection.add(dbFeature);
    }
}

Its all okay. But when I put this collection in Data Base i get a reversed items. So i want to sort or reverse items in this collection. But how to do this?
I try to use this:

        collection.sort( new SortBy() 
{ 
    @Override
            public PropertyName getPropertyName() { return YourPropertyNameImpl("id") ; } 
    @Override
            public SortOrder getSortOrder() { return SortOrder.ASCENDING; }
});

But I don't understand what is YourPropertyNameImpl.

UPDATE

Okey. I try to put features from my collection to another collection:

    Iterator iterator = null;
    int count;
    iterator = collection.iterator();
    while( iterator.hasNext()){
        SimpleFeature feature = (SimpleFeature) iterator.next();
        coll.add(feature);
        System.out.println("Coll= "+coll.features().next().getProperties("id"));
    }

But get same result(. In this case i need to read collection from last element to first. Its possible?

Answer 1

Just to help anyone else who ends up here as I did recently! There is a bug in GeoTools that prevents DESCENDING working as a sort order. See this PR for the fix which will be applied shortly.

UPDATE

This is now fixed in all GeoTools releases from 14.4 and 15.1