The first paper in the "Web Tier to Go With Java EE 5" series, "Summary of New Features in JavaServer Pages (JSP) 2.1 Technology," introduced the new unified expression language. This paper fifth in the series explains the new #{...} syntax that the unified expression language supports, how #{...} expressions differ from ${...}expressions, and why the expert groups for JavaServer Pages (JSP) and JavaServer Faces technologies settled on two syntaxes instead of a single one.
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