is there any way to store user in list user getting from database mysql? I'm creating rest api with spring boot

UserServiceImpl.java

@Override    public List<User> getAllUsers() {        User user = new User();        List<User> ulist = new ArrayList<>();        String query = "select * from user";        try {            dataBaseConnection.pstmt = dataBaseConnection.conn.prepareStatement(query);            dataBaseConnection.rs = dataBaseConnection.pstmt.executeQuery();            while ( dataBaseConnection.rs.next() ) {                ulist.add(new User(dataBaseConnection.rs.getInt(1),                        dataBaseConnection.rs.getString(2),                        dataBaseConnection.rs.getString(3),                        dataBaseConnection.rs.getString(4),                        dataBaseConnection.rs.getString(5),                        dataBaseConnection.rs.getString(6),                        dataBaseConnection.rs.getInt(7),                        dataBaseConnection.rs.getInt(8)                ));            }            System.out.println("getting all users successfully...");        } catch (Exception e) {            e.printStackTrace();        }        return ulist;    }

Controller Class name UserOperationController.java

@GetMapping("/get-all-user")    public List<User> fetchUsers() {        List<User> users = new ArrayList<User>();        users = this.userService.getAllUsers();        return users;    }

I'm trying to store user information in a list but instead of storing user info list stores memory objects of user class. Here User is @Entity which has getters and setters. When call Get Mapping urlit produces output like:

[    {"userName": null,"userEmail": null,"userPassword": null,"userState": null,"userCity": null,"userId": 0,"userAge": 0,"userMobile": 0    },    {"userName": null,"userEmail": null,"userPassword": null,"userState": null,"userCity": null,"userId": 0,"userAge": 0,"userMobile": 0    }]

instead of null values I'm expecting value from database but it produces output null values. Help me to find the correct answer.