Features
The new unified EL is a union of the JSP and JSF expression languages. In addition to the features already available in the JSP EL, the unified EL has the following features:
- Deferred evaluation
- Support for expressions that can set values and expressions that can invoke methods
- A pluggable API for resolving expressions
Read more about this topic: Unified Expression Language
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—Henry David Thoreau (1817–1862)