private static void loogerHashMapContent() {
    HashMap<String, Object> hashMap = new HashMap<String, Object>();
    hashMap.put("carrier", "carrier1");
    hashMap.put("province", "province1");
    hashMap.put("ismodem", "ismodem1");
    hashMap.put("state", "state1");


    Iterator<Entry<String, Object>> iterator = hashMap.entrySet().iterator();
    while (iterator.hasNext()) {
        Entry<String, Object> entry = iterator.next();
        System.out.print(entry.getKey()+":"+entry.getValue()+",");
    }
    System.out.println();
}

List<Object> list =Collections.synchronizedList(new ArrayList<Object>);