ManyToMany

[Happsun Happy]

I need help
how can i store objects
into two class .
public class Team{
List<Player> players;
}
public class Player{
List<Team> teams;
}
I have StackoverflowError

[Olivier]

Hello,

do you have the full stack strace?

Thanks,
Olivier

[Happsun Happy]

i'm sorry i was not there.
i just come back
no, how i will do to get it?

thanks

[Happsun Happy]

public class Book{
private String title;
List categories;
           public  Book (String title){
               this.title=title;
               categories = new ArrayList();
            }

    public addCat(Category cat){
           categories.add(cat);
        }

    }

    public class Category{
    private Strins catTyp;
    List books;

     
    public Category (String catTyp) {         
       this.catTyp = catTyp;
       books = new ArrayList();
         }

public addBook(Book book){
         books.add(book);
          }

    }

private void setBookCategory(long bookId,long catId){
      
        try {
            List lBooks = new ArrayList();
            List lCats = new ArrayList();
          
        Book loadedBook = getBook(bookId); // retrieve a specific book of database
        Category loadedCat = getCategory(catId);
      
        lBooks.add(loadedBook);
        for(Book pBook: loadedCat.getBooks()) lBooks.add(pBook);
      
        lCats.add(loadedCat);
        for(Category pCat: loadedBook.getCategories())lCats.add(pCat);
              
        loadedCat.setBooks(lBooks);
        loadedBook.setCategories(lCats);
      
        // store object to the database
            odb.store(loadedCat);
            odb.store(loadedBook);
          
        } catch(Exception e) {
            if (odb != null) {      
                //odb.rollback();
            }
        }  
    }

[Happsun Happy]

i'm store 9 books but after 9 books i get a StackOverflowError

[Happsun Happy]

Salut olivier
dans le tutoriel1
le step 9 ne return rien. peux tu revoirs ca?
j'ai executer le fichier run tutorial.

in tutorial 1 the step 9 return null.