Stream流笔记。学会一个记一个。省的到处找

目录

• • • • 将List转换为某个属性作为主键的Map实体作为Map

将List转换为某个属性作为主键的Map实体作为Map

 ArrayList<User> users=new ArrayList<>();
 Map<Long, User> collect = userStream.collect(Collectors.toMap(User::getId, u -> u));

标签：Map,Stream,作为,学会,List,笔记,collect,ArrayList,主键
来源： https://blog.csdn.net/m0_49194578/article/details/121265086