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JSF convertNumber Tag

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This tag is used to register the NumberConverter instance on the enclosing component.

JSF convertNumber Tag

        

This tag is used to register the NumberConverter instance on the enclosing component. This class is responsible to convert String to java.util.Number object and  vice-versa.

Code Description :

<%@ page contentType="text/html" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<f:view>
<html>
<body>
<h:form id="form1">
<table>
<tr>
<td><font color="#FF0000"><h:message for="number" /></font></td>
<td>&nbsp;</td>
</tr>
<tr>
<td>
<h:inputText id="number">
<f:convertNumber currencySymbol="$" type="currency" groupingUsed="#{false}"></f:convertNumber>
</h:inputText>
</td>
<td><h:commandButton value="Submit" /></td>
</tr>
</table>
</h:form>
</body>
</html>
</f:view>

Rendered Output : This is the first output that comes in front of the user.

When user inputs wrong input that does not start with the $ sign then error occurs, like below :

Html Source Code :

<html>
<body>
<form id="form1" method="post" action="/f-tags/pages/convertNumber/convertNumber.jsf" enctype="application/x-www-form-urlencoded">

<table>
<tr><td><font color="#FF0000"></font></td>
<td>&nbsp;</td>
</tr><tr><td>
<input id="form1:number" type="text" name="form1:number" />
</td>
<td><input type="submit" name="form1:_id1" value="Submit" /></td>
</tr>
</table>

<input type="hidden" name="form1" value="form1" /></form>
</body>
</html>

This tag contains some attributes:

currencyCode : In this attribute ISO 4217 currency code is set that will be applied when converting currency values. 
currencySymbol : This sets the currency symbol that will be applied when formatting currency values.
groupingUsed : 
This is the boolean attribute and is used to specify whether the output will contain grouping seperators. Its default value is "true".
integerOnly :
This is the boolean attribute and is used to specify whether only the integer part will be parsed.Its default value is "false".
locale :
This is used to specify the name of the locale for which we have to format the number.
maxFractionDigits :
It is used to specify the maximum no. of digits in the fractional part that will be formated.
maxIntegerDigits :
It is used to specify the maximum no. of digits in the integer part that will be formated.
minFractionDigits :
It is used to specify the minimum no. of digits in the fractional part that will be formated.
minIntegerDigits :
It is used to specify the minimum no. of digits in the integer part that will be formated.
pattern :
This is used to set the formatting pattern.
type :
It is used to specify the type of formatting. Its valid values are "number" "currency" "percentage". Its default value is "number".

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Posted on: June 13, 2007

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