java - How to use one-to-many and many-to-one annotations correctly? -

good day,

i have started first jpa project based on crm application , have difficulties understanding correct usage of manytoone , onetomany annotations. instance, let's have 2 classes; these account , user classes:

public class account {  @onetomany private set<user> userlist = new hashset<user>(); 

and

public class user {  @manytoone private account account; 

how correctly annotate many-to-one , one-to-many relationships? i've tried reading docs still not retrieve correct conclusion.

thank attention

a 'canonical' onetomany mapping case, meaning meaning bidirectional, foreign key in table of many-side (the owning side) in case this:

public class account {  @onetomany(mappedby="account") private set<user> userlist = new hashset<user>(); 

and

public class user {  @manytoone private account account; 

the difference existing code mappedby attribute, change 2 unidirectional relationships single, bidirectional relationship.