javax.faces.validator

Class RequiredValidator

Contents
  • All Implemented Interfaces:
    EventListener, Validator

    public class RequiredValidator
extends Object
implements Validator

    A Validator that checks for an empty value in the same way that UIInput checks for a value. In fact, this validator is equivalent to setting the required attribute on the input component to true.

    Since:
    2.0

    • Field Detail

    • Constructor Detail

      • RequiredValidator

        public RequiredValidator()

    • Method Detail

      • validate

        public void validate(FacesContext context,
                     UIComponent component,
                     Object value)

        Verify that the converted object value is not null.

        Specified by:
        validate in interface Validator
        Parameters:
        context - FacesContext for the request we are processing
        component - UIComponent we are checking for correctness
        value - the value to validate
        Throws:
        ValidatorException - if validation fails

Document created the 11/06/2005, last modified the 18/08/2025
Source of the printed document:https://www.gaudry.be/en/java-api-javaee-rf-javax/faces/validator/RequiredValidator.html

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References

  1. View the html document Language of the document:fr Manuel PHP : https://docs.oracle.com, RequiredValidator (Java(TM) EE 7 Specification APIs)

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