jet101 0 Light Poster

Hi guys, it's been a while since the last time I post here...

I'm currently learning JPA right now for my J2SE project, I dont have problems doing CRUD on a single table, now I want to try to retrieve data on JOIN tables. example if I have 2 entities like Client and Loans do I need to create a class to join them or I could simple mapped using @OneToOne the Loan entity class on client entity class?