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In my java program, I had a book class and a library class.
The library stores the book object in an array list and then I display it on the screen.
I can add the book and remove the books using functions.
I also use AbstractJtableModel for adding and removing the books.
But now I want to use a database, MySQL, instead of an array list.
How should I change my program?
well, you need to write the whole application 🙂
you need to create a db, with at least one table, you need to add mysql jdbc library to classpath and using jdbc you can insert/select/update/delete data from DB.
Alternatively, you need to add jdbc and use ORM framework like Hibernate, but depending on your Java knowledge this way can be harder (but easier to maintain in future, if you create big application). Here you can download simple hibernate application, which does CRUD operations with Honey :), you can extract interface similar to suggested by Javid Jamae from TestExample class, and exchange Honey class with Book according to your needs