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Java EE7 (which supports EL 3.0 spec) allows JSPs to use EL expressions like:

<html>
   <body>
      foo: --- ${Boolean.TRUE} ---<br>
      bar: --- ${Integer.MAX_VALUE} ---<br>
   </body>
</html>

However, the

${Boolean.TRUE}

and

${Integer.MAX_VALUE}

in the above example aren't evaluated correctly and instead a blank string is rendered for them.

causes

JBEAP-14605 [GSS] (7.1.z) degraded performance from ImportedClassELResolver

is cloned by

JBEAP-5613 Usage of static fields from java.lang classes as EL expressions in JSPs doesn't work

JBEAP-15513 Usage of static fields from java.lang classes as EL expressions in JSPs doesn't work for servlet 4.0

is related to

WFLY-6943 javax.el.ImportHandler#resolveClass API doesn't use "current" classloader

relates to

WFLY-11086 Usage of static fields from java.lang classes as EL expressions in JSPs doesn't work when requested more than once

WFLY-11065 Usage of static fields from java.lang classes as EL expressions in JSPs doesn't work for servlet 4.0

(1 relates to)