如何进行多层map的比较

Map<String, Map<String, String>> map = new HashMap<String, Map<String, String>>();
    Map<String, String> map2 = new HashMap<String, String>();
    map2.put("3", "4");
    map2.put("2", "3");
    map.put("1", map2);
    //第二个map
    Map<String, Map<String, String>> maps = new HashMap<String, Map<String, String>>();
    Map<String, String> maps2 = new HashMap<String, String>();
    maps2.put("3", "4");
    maps2.put("2", "3");
    maps.put("1", maps2);

    if(map.get("1").get("3").equals(maps.get("1").get("3"))&&map.get("1").get("2").equals(maps.get("1").get("2"))){
        System.out.println("ok");
    }