Map map = new HashMap();
map.put("key1", "value1");
map.put("key2", "value2");

List<Map<String, String>> list = new ArrayList<Map<String, String>>();
list.add(map);

for(int i = 0;i < list.size();i++)
{
    Map<String,Object> map = list.get(i);
    String authorStr = map.get("key1").toString();
    System.out.println("author" + " : " + authorStr);
}