A validator defines a set of standard classes for performing common data validation checks, for example, a phone number input field must be numbers. A component can have one or more validators.
To add a validator:
Select faces-config.xml in the WorkSpace Navigator of the Web Application Development perspective.
The JSF Application Configuration editor opens.
Select the Component tab of the editor.
Expand the Validators section.
A list of defined validators displays.
Click Add.
A new validator is added to the Converters list with the default name New Validatorx.
(Optional) Change the default validator name to a unique, descriptive name in the Display name field of the General section.
(Optional) Type a description in the Description field.
Type an ID in the Validator ID field.
Click Browse and select a Validator Class.
Click Add in the Attributes section to add an attribute value.
Click Add in the Properties section to add a property.
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