JavaBeat

NetBeans IDE 7 CookbookWelcome to the NetBeans Cookbook. NetBeans is a Java Integrated Development Environment, IDE, which enables fast application development with the most adopted frameworks, technologies, and servers. Different than other IDEs, NetBeans comes already pre-packaged with a wide range of functionality out of the box, such as support for different frameworks, servers, databases, [...]

This article is based on EJB3 in Action, Second Editionand the book will release on October 2011. It is being reproduced here by permission from Manning Publications. Manning publishes MEAP (Manning Early Access Program,) ebooks and pbooks. MEAPs are sold exclusively through Manning.com. All print book purchases include an ebook free of charge. When mobile [...]

This article is based on EJB3 in Action, Second Edition and the book will released on October 2011. It is being reproduced here by permission from Manning Publications. Manning publishes MEAP (Manning Early Access Program,) ebooks and pbooks. MEAPs are sold exclusively through Manning.com. All print book purchases include an ebook free of charge. When [...]

Transaction represents a group of activities that must be performed as a single work unit. This clarifies that a transaction is complete if and only if all the work items within a work group results in success. If any of the work items fails, then the transaction as a whole will be treated as a [...]

EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g EJB (Enterprise JavaBeans) 3.0 entity beans is a commonly used database persistence technology. EJB 3.0 has simplified the development of EJBs with an annotations-based APithat does not require remote/local interfaces, home/local home interfaces, or deployment descriptors. Developing entity EJBs requires an application server and a relational [...]

This Article presents two important new features of EJB 3.0 which is bundeled with Java EE 5.0 specification, which are Annotations and Dependency Injection. The solid reason for this artice is , it will give us an idea how these features are used, so on their encounter in other articles of EJB3.0, we can understand [...]

Entities are classes that need to be persisted; their state is stored outside the application, typically in a relational database. Unlike session beans, entities do not have business logic other than validation. As well as storing such entities, we want to query, update, and delete them. The EJB 3.0 specification recognizes that many applications have the above persistence needs [...]

This article discusses how an enterprise bean can act as a Web-Service component. Since Web-Services itself is a vast technology, the first part of the article discusses more about Web-Services. Specifically, the first part of the article discusses what Web-Services are, its unique features among other related technologies, its architecture, and the various base components [...]

Originally published in DeveloperIQ magazine What is CMP and BMP in EJB? So, why is it that Entity beans alone were found wanting and the specification keeps on changing? Entity beans are of two types. CMP & BMP. CMP stands for Container-Managed Persistence and BMP stands for Bean-managed persistence. Theoretically, the EJB specification does not [...]

Introduction Starting from EJB 2.1, Timer Services are available for building J2EE Applications that depends on time based services. Time based services are mostly used in scheduling applications. Technically, these scheduling applications are called workflows. A workflow defines a configurable sequence of activities or tasks that will take place at a particular point of time. [...]