What are common mistakes in using Data Access Objects?

What are common mistakes in using Data Access Objects?

Some common mistakes include not properly managing connections, failing to handle exceptions, and mixing business logic with data access.

Can you explain why mixing business logic with data access is a mistake?

Mixing them can lead to code that is hard to maintain and test, as it violates the separation of concerns principle.

What are some best practices to avoid these mistakes?

Best practices include keeping your DAO focused on data operations, using connection pooling, and implementing proper error handling.

How can I implement connection pooling in my application?

You can implement connection pooling by using libraries like HikariCP or Apache DBCP, which manage a pool of database connections for you.