模仿sql查询集合对象过滤符合条件

 List<User> list = new ArrayList<>();
        User user1 = new User("张三",15,"男");
        User user2 = new User("李四",22,"男");
        User user3 = new User("王五",25,"男");
        User user4 = new User("赵六",30,"男");
        User user5 = new User("李世民",28,"男");
        User user6 = new User("杨贵妃",18,"女");
        User user7 = new User("貂蝉",16,"女");
        list.add(user1);
        list.add(user2);
        list.add(user3);
        list.add(user4);
        list.add(user5);
        list.add(user6);
        list.add(user7);
        List<User> collect = list.stream()
                .filter(user -> "张三".equals(user.getName()))
                .collect(Collectors.toList());