can u explain about design patterns like singleton,builder,factory

1893

Which is more beneficial: Stateful or Stateless Bean?

582

What do you understand by annotation in ejb to do the database entity relationships/mappings with examples?

560

Where is ejb used?

522

What are the advantages of ejb?

546

Why do we need ejb in java?

517

What is entity bean?

584

What is ejb ql?

570

What is ejb context?

541

List down the steps for the demonstration of ejp persistence mechanism.

621

What is @resource in java?

526

What are transaction isolation levels in ejb?

547

Name the attributes of javax.ejb.ejb.

498

What happens when I change a value in the httpsession from inside an ejb?

523

How does ejbs work?

509