java map的key和value转list 或者list转set

Map<String,Object>map=new HashMap<String,Object>(){{
			put("name","ljj");
			put("age",28);
}};
List<Object>list=new ArrayList<Object>(map.values());
List<String>list1=new ArrayList<String>(map.keySet());
Set<Object>set=new HashSet<Object>(list);