Java – how to sort hash map list

I have a HashMap list, as shown below

ArrayList l = new ArrayList ();
HashMap m = new HashMap ();
m.add("site_code","AL");
m.add("site_name","Apple");
l.add(m);
m = new HashMap();
m.add("site_code","JL");
m.add("site_name","Cat");
l.add(m);
m = new HashMap();
m.add("site_code","PL");
m.add("site_name","Banana");
l.add(m)

I want to be based on site_ Name sorts the list So in the end it will be classified as

Apple,Banana,Cat

I'm trying something like this:

Collections.sort(l,new Comparator(){
           public int compare(HashMap one,HashMap two) {
              //what goes here?
           }
});

Solution

If you make your collection generic, it will eventually look like this:

Collections.sort(l,new Comparator<HashMap<String,String>>(){ 
        public int compare(HashMap<String,String> one,HashMap<String,String> two) { 
            return one.get("site_name").compareTo(two.get("site_name"));
        } 
});

If you cannot use generics because you are stuck on a 1.4 or earlier platform, you must convert get to string

(in addition, as a style, I prefer to declare variables as list and map rather than ArrayList and HashMap. But this has nothing to do with the problem.)