Explain JPA Entity Object Life Cycle.

The life cycle of entity objects consists of four states: New, Managed, Removed and Detached.

When an entity object is initially created its state is New. In this state the object is not yet associated with an EntityManager and has no representation in the database.

An entity object becomes Managed when it is persisted to the database via an EntityManager's persist method, which must be invoked within an active transaction.

A managed entity object can also be retrieved from the database and moved to removed, by using the EntityManager's remove method within an active transaction.

Detached represents entity objects that have been disconnected from the EntityManager.

Invest now in Acorns!!! 🚀
Join Acorns and get your $5 bonus!

Acorns is a micro-investing app that automatically invests your "spare change" from daily purchases into diversified, expert-built portfolios of ETFs. It is designed for beginners, allowing you to start investing with as little as $5. The service automates saving and investing. Disclosure: I may receive a referral bonus.

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull! Receive free stock by signing up using the link: Webull signup.