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I am having a little trouble figuring out how to do and's on EL expressions in Facelets. So basically I have:
<h:outputText id="Prompt" value="Fobar" rendered="#{beanA.prompt == true && beanB.currentBase !=null}" /> But I keep getting:
Error Traced[line: 69] The entity name must immediately follow the '&' in the entity reference.
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A semicolon may be used between independent clauses joined by a connector, such as and, but, or, nor, etc., when one or more commas appear in the first clause. Example: When I finish here, and I will soon, I'll be glad to help you; and that is a promise I will keep.
Semicolons Separate Clauses Here's an example: I have a big test tomorrow; I can't go out tonight. The two clauses in that sentence are separated by a semicolon and could be sentences on their own if you put a period between them instead: I have a big test tomorrow.
When to Use a Semicolon. A semicolon (;) is a punctuation mark that has two main functions: Semicolons separate items in a complex list. For example, The Council is comprised of ten members: three from Sydney, Australia; four from Auckland, New Zealand; two from Suva, Fiji; and one from Honiara, Solomon Islands.
Facelets is a XML based view technology. The & is a special character in XML representing the start of an entity like & which ends with the ; character. You'd need to either escape it, which is ugly:
rendered="#{beanA.prompt == true && beanB.currentBase != null}" or to use the and keyword instead, which is preferred as to readability and maintainability:
rendered="#{beanA.prompt == true and beanB.currentBase != null}" Unrelated to the concrete problem, comparing booleans with booleans makes little sense when the expression expects a boolean outcome already. I'd get rid of == true:
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