JSF f:validateDoubleRange

by Online Tutorials Library July 14, 2022

JSF <f:validateDoubleRange> Tag

It is used to check that the value of a input field is within a certain range or not. The value must be floating-point or convertible to floating-point.

<f:validateDoubleRange> TagAttributes

Attribute	Description
minimum	It is used to set minimum value for this component.
maximum	It is used to set maximum value for this component.

<f:validateDoubleRange> Tag Example

In this example, we are validating user input of double type within specified range. This program will report an error message if input does not validate.

// index.xhtml

 <h:outputLabel for=”amount”>Enter Amount </h:outputLabel> <h:inputText id=”name-id” value=”#{user.amount}” validatorMessage=”Please enter amount between 1000.50 and 5000.99″> <f:validateDoubleRange minimum=”1000.50″ maximum=”5000.99″/> </h:inputText><br/><br/> <h:commandButton value=”Submit” action=”response.xhtml”></h:commandButton> </h:form> 

// User.java

 import javax.faces.bean.ManagedBean; import javax.faces.bean.RequestScoped; @ManagedBean @RequestScoped public class User{ double amount; public double getAmount() { return amount; }  public void setAmount(double amount) { this.amount = amount; } } 

// response.xhtml

 <h:body> <f:view locale=”fr”> Amount entered by you: <h:outputText id = “user-name-id” value=”#{user.amount}”> </h:outputText> </f:view> </h:body> 

Output:

// index page

// response page

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JSF f:validateDoubleRange

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