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Jsf convertnumber example

JSF f convertnumber tag:

JSF f:convertNumber tag is a standard JSF converter which is used to converts a string into a number of specific format. It is also used for valid number validation.

JSF converter tag attributes:

AttributeDescription
1. typenumber (default), currency , or percent
2. patternFormatting pattern, as defined in java.text.DecimalFormat
3. maxFractionDigitsMaximum number of digits in the fractional part
4. minFractionDigitsMinimum number of digits in the fractional part
5. maxIntegerDigitsMaximum number of digits in the integer part
6. minIntegerDigitsMinimum number of digits in the integer part
7. integerOnlyTrue if only the integer part is parsed (default: false)
8. groupingUsedTrue if grouping separators are used (default: true)
9. localeLocale whose preferences are to be used for parsing and formatting
10. currencyCodeISO 4217 currency code to use when converting currency values
11. currencySymbolCurrency symbol to use when converting currency values

Example:

test.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml"
	xmlns:h="http://java.sun.com/jsf/html"
	xmlns:f="http://java.sun.com/jsf/core"
	xmlns:ui="http://java.sun.com/jsf/facelets">
	<h:head>
		<title>JSF f convert number example.</title> 
	</h:head>
    <h:body> 
      <h3>JSF f convert number example.</h3>
      <h:form>
        <h:inputText label="Enter Amount: " 
           value="#{test.amount}" required="true">
         <f:convertNumber minFractionDigits="2"/>
        </h:inputText>
        <h:commandButton action="welcome.xhtml" value="Submit"/>
      </h:form>
    </h:body>
 
</html>

Test.java

import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
 
/**
 * Managed bean.
 * @author codesjava
 */
@ManagedBean(name="test")
@SessionScoped
public class Test {
	private double amount;
 
	public double getAmount() {
		return amount;
	}
 
	public void setAmount(double amount) {
		this.amount = amount;
	}
}

welcome.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml"
	xmlns:h="http://java.sun.com/jsf/html"
	xmlns:f="http://java.sun.com/jsf/core"
	xmlns:ui="http://java.sun.com/jsf/facelets">
	<h:head>
		<title>JSF f convert number example.</title>
	</h:head>
    <h:body> 
      <h3>JSF f convert number example.</h3>
      Amount minFractionDigits="2": 
      <h:outputText value="#{test.amount}" >
        <f:convertNumber minFractionDigits="2" />
      </h:outputText>
      <br/>
      Amount pattern="#0.000": 
      <h:outputText value="#{test.amount}" >
        <f:convertNumber pattern="#0.000" />
      </h:outputText>
      <br/>
      Amount currencySymbol="$": 
      <h:outputText value="#{test.amount}" >
        <f:convertNumber currencySymbol="$" type="currency" />
      </h:outputText>
      <br/>
      Amount type="percent": 
      <h:outputText value="#{test.amount}" >
        <f:convertNumber type="percent" />
      </h:outputText>
    </h:body>
 
</html>

faces-config.xml

<?xml version="1.0" encoding="windows-1252"?>
<faces-config version="2.0" 
xmlns="http://java.sun.com/xml/ns/javaee" 
xmlns:xi="http://www.w3.org/2001/XInclude" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd">
 
</faces-config>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 
    	xmlns="http://java.sun.com/xml/ns/javaee" 
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    	http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
 
    <servlet>
        <servlet-name>faces</servlet-name>
        <servlet-class>
         javax.faces.webapp.FacesServlet
	<servlet-mapping>
        <servlet-name>faces</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
 
</web-app>

URL:

http://localhost:7001/JSFExample29/faces/test.xhtml

Output:

JSF example29-1
 
Enter any number value.
JSF example29-2
 
Click Submit button.
JSF example29-3
 
Download this example.
 

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