Sun's new light-weight Java company variation (EE) five is an incredibly robust platform for constructing enterprise-level Java-based functions, essentially for the server. This ebook indicates you the way to harness that strength, studying how the items of the hot Java EE five platform healthy jointly, together with the newly redesigned annotations-driven EJB three spec in addition to JavaServer Faces (JSF), built-in into the platform for the 1st time.Hands-on tutorials also are incorporated, in addition to transparent causes and dealing code examples. you'll develop to take the subsequent stepfrom writing client-side machine functions to writing firm functions. additionally, you will methods to use the person APIs and instruments within the Java EE five platform, and the way to merge those to create your personal company purposes.
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Additional resources for Beginning Java EE 5: From Novice to Professional
The flexibility comes from the fact the user interface components do not directly generate any specific presentation code. Creating the client presentation code is the job of custom renderers. With the correct renderer, the same user interface components could be used to generate presentation code for any arbitrary device. Thus, if the client’s device changed, you would simply configure your system to use a renderer for the new client, without needing to change any of the JSF code. At the moment, the most common presentation format is HTML, and JSF comes with a custom renderer to create HTML user interfaces.
The Java EE architecture provides a lot of flexibility for the persistence model. You can defer all of the work of storing and retrieving the bean’s state information to the container, as shown in Figure 1-11. This is known as container-managed persistence. Figure 1-11. In container-managed persistence, the EJB container is responsible for all actions required to save the state of the EJB to some persistent store, usually a database. ). This is known as bean-managed persistence and is illustrated in Figure 1-12.
Most JDBC applications are used to communicate with a relational database. In a relational database, data is stored, conceptually, in tables. Each row in a table represents a set of data— a customer record, product information, a web site listing, and so on. And each column in the table represents a piece of data in that set. Tables can be linked by creating a relation between tables, thus it’s called a relational database. For example, a database might have a table of customer information and a table of information about orders.
Beginning Java EE 5: From Novice to Professional by KevinMukhar;JimCrume;JamesLWeaver&ChrisZelenak