gistfile1.txt

User(table)                                    Post(table)                            Comments(table)
userid name                                    postid title                          commntsid   commnets   userid  postid
  
@Entity                                       @Entity                                    @Entity
@Table(name = "user")                         @Table(name = "post")                      @Table(name = "comments")
public class User                             public class Post                          public class Comments
{                                              {                                         {
  @OneToMany(mappedBy = "user")                                                                               
 List<Post> post=new ArrayList<>();          @ManyToOne(fetch = FetchType.LAZY)              @ManyToOne(fetch = FetchType.LAZY)
                                              @JoinColumn(name = "uid")                      @JoinColumn(name = "uid")
                                               private User user;                            private User user;

@OneToMany(mappedBy = "user")                  @OneToMany(mappedBy = "post")                 @ManyToOne(fetch = FetchType.LAZY)
 List<Comments> commnts=new ArrayList<>();    List<Comments> commnts=new ArrayList<>();      @JoinColumn(name = "postid")
                                                                                             private Post post