Coercion Rules
The EL automatically converts, or coerces, variable values and the result of an expression to the type required by an attribute or an operator:
To Java type |
Conversion rule |
String |
All other types: to the corresponding |
Primitive number or Number |
Numeric types: coerce to the requested precision. |
boolean or Boolean |
null: to
|
Other type |
String: use the Other: type cast, if possible. |
In all cases, the EL evaluator throws an exception for attempts to convert between types not defined in the table or if the defined conversion rule fails.
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