Expressions and Operators
The combination of literal values, variables, and the following operators form an EL expression:
Operator |
Precedence |
Operation performed |
. |
1 |
Access a bean property or |
[] |
1 |
Access an array or |
( ) |
2 |
Group a subexpression to change the evaluation order. |
? : |
10 |
Conditional test: condition ? ifTrue : ifFalse. |
+ |
5 |
Addition. |
- |
5 |
Subtraction. |
- |
3 |
Negation of a value. |
* |
4 |
Multiplication. |
/ or div |
4 |
Division. |
% or mod |
4 |
Modulo (remainder). |
== or eq |
7 |
Test for equality. |
!= or ne |
7 |
Test for inequality. |
< or lt |
6 |
Test for less than. |
> or gt |
6 |
Test for greater than. |
<= or le |
6 |
Test for less than or equal. |
>= or ge |
6 |
Test for greater than or equal. |
&& or and |
8 |
Test for logical AND. |
|| or or |
9 |
Test for logical OR. |
! or not |
3 |
Unary Boolean complement. |
empty |
3 |
Test for empty variable values ( |
Expressions are evaluated in the order defined by the operator precedence and left to right for operators of the same precedence.
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