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JSP 2.0 Expression Language - Basic Arithmetic

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   <title>JSP 2.0 Expression Language - Basic Arithmetic</title>
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JSP 2.0 Expression Language - Basic Arithmetic

   This example illustrates basic Expression Language arithmetic.
   Addition (+), subtraction (-), multiplication (*), division (/ or div), 
   and modulus (% or mod) are all supported.  Error conditions, like
   division by zero, are handled gracefully.

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EL Expression Result
\${1} ${1}
\${1 + 2} ${1 + 2}
\${1.2 + 2.3} ${1.2 + 2.3}
\${1.2E4 + 1.4} ${1.2E4 + 1.4}
\${-4 - 2} ${-4 - 2}
\${21 * 2} ${21 * 2}
\${3/4} ${3/4}
\${3 div 4} ${3 div 4}
\${3/0} ${3/0}
\${10%4} ${10%4}
\${10 mod 4} ${10 mod 4}
\${(1==2) ? 3 : 4} ${(1==2) ? 3 : 4} 

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JSP 2.0 Expression Language - Basic Comparisons

   <source lang="java">

<html> 

 <head>
   <title>JSP 2.0 Expression Language - Basic Comparisons</title>
 </head>
 <body>

JSP 2.0 Expression Language - Basic Comparisons

   This example illustrates basic Expression Language comparisons.
   The following comparison operators are supported:
  • Less-than (< or lt)
  • Greater-than (> or gt)
  • Less-than-or-equal (<= or le)
  • Greater-than-or-equal (>= or ge)
  • Equal (== or eq)
  • Not Equal (!= or ne)

Numeric

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EL Expression Result
\${1 < 2} ${1 < 2}
\${1 lt 2} ${1 lt 2}
\${1 > (4/2)} ${1 > (4/2)}
\${1 > (4/2)} ${1 > (4/2)}
\${4.0 >= 3} ${4.0 >= 3}
\${4.0 ge 3} ${4.0 ge 3}
\${4 <= 3} ${4 <= 3}
\${4 le 3} ${4 le 3}
\${100.0 == 100} ${100.0 == 100}
\${100.0 eq 100} ${100.0 eq 100}
\${(10*10) != 100} ${(10*10) != 100}
\${(10*10) ne 100} ${(10*10) ne 100}


Alphabetic

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EL Expression Result
\${"a" < "b"} ${"a" < "b"}
\${"hip" > "hit"} ${"hip" > "hit"}
\${"4" > 3} ${"4" > 3} 

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Источник — «http://jexp.ru/index.php?title=Java_Tutorial/JSP/JSP_2.0&oldid=4970»