Return list of users - mysql

Question

I have entity like this
{
id,
projectId,
name,
age,
address
}
Now I need to return list of users that are connected to projects which have 4 or more users
For example if I have in database records like this
{1, 1, "John", 21, "Address1"}
{2, 1, "Joey", 22, "Address2"}
{3, 2, "Tom", 25, "Address3"}
{4, 3, "Mike", 23, "Address4"}
{5, 1, "John", 26, "Address5"}
{6, 3, "Jane", 28, "Address6"}
{7, 2, "Joe", 23, "Address7"}
{8, 2, "Steve", 24, "Address8"}
{9, 3, "Will", 29, "Address9"}
{10, 1, "Robert", 21, "Address10"}
{11, 2, "James", 20, "Address11"}
i should get returned list
{1, 1, "John", 21, "Address1"}
{2, 1, "Joey", 22, "Address2"}
{3, 2, "Tom", 25, "Address3"}
{5, 1, "John", 26, "Address5"}
{7, 2, "Joe", 23, "Address7"}
{8, 2, "Steve", 24, "Address8"}
{10, 1, "Robert", 21, "Address10"}
{11, 2, "James", 20, "Address11"}
because project with ID 1 have 4 users and also project with ID 2 have 4 users, but project with ID 3 have 3 users and I don't need that users as result.
I'm using SpringData JPA but as I researched JPA doesn't provide option to make such filtering and as other option I found that I can write custom MySql Query but don't know how that query should look like
I've tried something with group by projectId but don't know how to count and get only groups that have 4 or more users
#Query(value = "SELECT * FROM USER u GROUP BY projectId", nativeQuery = true)
List<User> findUsers();

Answer 1

create table temp (
id int,
projectId int,
name varchar(20),
age int,
address varchar(20)
);
insert into temp (id,projectId,name,age,address) values (1, 1, 'John', 21, 'Address1');
insert into temp (id,projectId,name,age,address) values (2, 1, 'Joey', 22, 'Address2');
insert into temp (id,projectId,name,age,address) values (3, 2, 'Tom', 25, 'Address3');
insert into temp (id,projectId,name,age,address) values (4, 3, 'Mike', 23, 'Address4');
insert into temp (id,projectId,name,age,address) values (5, 1, 'John', 26, 'Address5');
insert into temp (id,projectId,name,age,address) values (6, 3, 'Jane', 28, 'Address6');
insert into temp (id,projectId,name,age,address) values (7, 2, 'Joe', 23, 'Address7');
insert into temp (id,projectId,name,age,address) values (8, 2, 'Steve', 24, 'Address8');
insert into temp (id,projectId,name,age,address) values (9, 3, 'Will', 29, 'Address9');
insert into temp (id,projectId,name,age,address) values (10, 1, 'Robert', 21, 'Address10');
insert into temp (id,projectId,name,age,address) values (11, 2, 'James', 20, 'Address11');
QUERY :
SELECT *
FROM temp
WHERE projectid IN (SELECT projectid
FROM temp
GROUP BY projectid
HAVING Count(*) > 3)