alo

April 05

Prof. Ismael H. F. Santos - ismael@tecgraf.puc-rio.br 2

JSTL Introduction: EL Expressions

http://java.sun.com/j2ee/1.4/docs/tutorial/doc/JSPIntro7.html#wp77083

EL Expression

Result

${1 > (4/2)}

false

${4.0 >= 3}

true

${100.0 == 100}

true

${(10*10) ne 100}

false

${'a' < 'b'}

true

${'hip' gt 'hit'}

false

${4 > 3}

true

${1.2E4 + 1.4}

12001.4

${3 div 4}

0.75

${10 mod 4}

${empty param.Add}

True if the request parameter named Add is null or an empty string

${pageContext.request.contextPath}

The context path

${sessionScope.cart.numberOfItems}

The value of the numberOfItems property of the session-scoped attribute named cart

${param['mycom.productId']}

The value of the request parameter named mycom.productId

${header["host"]}

The host

${departments[deptName]}

The value of the entry named deptName in the departments map

${requestScope['javax.servlet.
forward.servlet_path']}

The value of the request-scoped attribute named javax.servlet.
forward.servlet_path