How can I troubleshoot the issue of “ object references an unsaved transient instance before flushing” in Java?

The particular issue of object references an unsaved transient instance before flushing can be raised due to trying to save an entity that references another entity that has not been saved yet. Here is the example given to troubleshoot the issue in Java:- Suthat you have entities like “Author” and “Book”. You created a new “Book” instance aJavaet it” Author” reference to a new “ Author”. This new “ Author” has not been saved yet by you. When you are trying to save the “ book” object it shows you the above issue

Here is the solution given:-

 // Creating a new Author

Author author = new Author();

Author.setName(“John Doe”);

// Saving the Author to the database

Session session = sessionFactory.openSession();

Session.beginTransaction();

Session.save(author); // Persist the Author before associating it with a Book

Session.getTransaction().commit();

Session.close();

// Creating a new Book and associating it with the saved Author

Book book = new Book();

Book.setTitle(“Sample Book”);

Book.setAuthor(author); // Now the Book references the saved Author

// Saving the Book

Session newSession = sessionFactory.openSession();

newSession.beginTransaction();

newSession.save(book);

newSession.getTransaction().commit();

newSession.close()

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