java8这种要怎么写的

[Gemerl]

List<User> list = new ArrayList<>();
		for (int i = 0; i < 5; i++) {
			User u = new User();
			u.setUserCode("userCode" + (i + 1));
			list.add(u);
		}
list.stream().filter((User n) -> n.getUserCode().equals("userCode1")).forEach(System.out::println);

想打印 userCode的值

[Braska]

list.stream().filter(n -> !"userCode1".equals(n.getUserCode())).map(User::getUserCode).forEach(System.out::println);