Basic Operators

Updated on 2022-09-23 GMT+08:00

View PDF

EL supports most of the arithmetic and logic operators provided by Java.

**Table 1** Basic operators
Operator	Description
.	Accesses a Bean property or a mapping entry.
[]	Accesses an array or linked list.
()	Organizes a subexpression to change priority.
+	Plus sign
-	Minus or negative sign
*	Multiplication sign
/ or div	Division sign
% or mod	Modulo
== or eq	Test whether equal to.
!= or ne	Test whether unequal to.
< or lt	Test whether less than.
> or gt	Test whether greater than.
<= or le	Check whether less than or equal to.
>= or ge	Test whether greater than or equal to.
&& or and	Test logic and.
\|\| or or	Test logic or.
! or not	Test negation.
empty	Test whether empty.
?:	The expression is similar to if else. If the statement in front of ? is true, the value of the expression between ? and : is returned. Otherwise, the value following : is returned.

If variable a is empty, default is returned. If variable a is not empty, a itself is returned. The EL expression is as follows:

#{empty a?"default":a}

Parent topic: EL Expression Reference

Thank you very much for your feedback. We will continue working to improve the documentation.

The system is busy. Please try again later.

Which of the following issues have you encountered?

Content is inconsistent with the product UI

Unclear descriptions

Lack of examples or code

Incorrect steps

Can't find what I need

Lack of best practices

Feedback (optional)

0/500

Select at least one type of issue, and enter your comments or suggestions.

Enter a maximum of 500 characters.

Submit Cancel