In this video, learn how to use Expression Language, or EL, effectively.
- [Instructor] Now, we've been seeing the pound sign…and the curly brackets all over as Expression Language,…but what is Expression Language?…Expression language, or EL,…is a scripting language, or syntax,…that we use to evaluates Java variables,…values, and objects within Facelets,…and many other platforms.…For example, EL was available in JSPs,…and you'll find it in other frameworks,…like the Spring Framework.…For most of our usage, we use it to connect…our JSF page to the Java code in our backing bean,…retrieving and saving values…and connecting controls to methods.…
If usage is generally of the form of an object,…usually backing bean, then a field,…or method on that bean or object.…There are two fundamental rules for using EL in JSF.…The first rule is that for managed bean bindings,…the Java class must be annotated…with the @Named annotation, like we have here.…The name we supply here isn't mandatory.…The context and parenthesis injection, CDI runtime,…will use the name of the class as the default name.…
It's just better practice…
- Why use JSF?
- How JSF works
- Using managed beans in JSF
- Building a JSF page using Facelets
- Using Ajax support in JSF
- Processing complex data with JSF converters
- Security in JSF
- JSF and third-party component libraries
Skill Level Beginner
1. Web Application Development in JavaEE
2. Build Your First JSF Page
3. Use Managed Beans in JSF
4. Build a JSF Page Using Facelets
5. Use Ajax Support in JSF
6. Process Complex Data with JSF Converters
7. Protect Your Application with JSF Validation
8. Security in JSF
9. Combine JSF with Other Frameworks
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