集合排序

Collections.sort(nodes,new Comparator<ZNodeDTO>(){
            @Override
            public int compare(ZNodeDTO o1, ZNodeDTO o2) {
                if(o1==null) return -1;
                if(o2==null) return 1;
                Collator c = Collator.getInstance(java.util.Locale.CHINA);
                return c.compare(o1.getName(),o2.getName());
            }
        });