haspmap short

Comparator<HashMap<String, String>> comparator = new Comparator<HashMap<String, String>>() {                                   
            @Override
            public int compare(HashMap<String, String> object1, HashMap<String, String> object2)
            {      
                    return object1.get("mediadate").compareToIgnoreCase(object2.get("mediadate"));
            }
    };     
    Collections.sort(fillMaps, comparator);

 ans-4:
1.link:http://stackoverflow.com/questions/3166796/java-sorting-multiple-arraylists-synchronously-or-a-single-mapped-arraylist

2.http://www.theserverside.com/discussions/thread.tss?thread_id=29569