Standard Converters in JSF (convertNumber and convertDateTime)
The standard converters are built-in converters in JSF Framework. These converters are usually associated with the User Interface components with the help of tags that are available at http://java.sun.com/jsf/core.
There are 2 types of Standard Converters in JSF:
- convertNumber
- convertDateTime
convertNumber:
| Currency Code | < c:convertNumber type=”currency” currencyCode=”NZD” > |
| Currency Symbol | < c:convertNumber type=”currency” currencySymbol=”$” > |
| maxFractionDigits | < c:convertNumber maxFractionDigits=”3″ > |
| minFractionDigits | < c:convertNumber minFractionDigits=”1″ > |
| maxIntegerDigits | < c:convertNumber maxIntegerDigits=”3″ > |
| minIntegerDigits | < c:convertNumber minIntegerDigits=”3″ > |
| integerOnly | < c:convertNumber integerOnly=”true” > |
| pattern | < c:convertNumber pattern=”#000.00″ > |
| type | < c:convertNumber type=”percent” > (types- type=number,percent,currency) |
convertDateTime
| Attribute | Example |
| type | < c:convertDateTime type=”time” > |
| dateStyle | < c:convertDateTime dateStyle=”long” > (types-short,medium,long,full) |
| timeStyle | < c:convertDateTime type=”time” timeStyle=”long” > |
| pattern | < c:convertDateTime pattern=”dd-MM-yy” > (types-short,medium,long,full) |
Example:
converter.xhtml
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:c="http://java.sun.com/jsf/core">
<h:head>
<title>Converter Page</title>
</h:head>
<h:body>
<table border="3">
<tr>
<td>Converter</td>
<td>Original Value</td>
<td>Converted Value</td>
</tr>
<tr>
<td>minFractionDigits (1)</td>
<td><h:outputText value="23.332"/></td>
<td> <h:outputText value="23.332" >
<c:convertNumber minFractionDigits="1" />
</h:outputText> </td>
</tr>
<tr>
<td>maxIntegerDigits (3)</td>
<td><h:outputText value="332343"/></td>
<td><h:outputText value="332343">
<c:convertNumber maxIntegerDigits="3"/>
</h:outputText></td>
</tr>
<tr>
<td>Pattern (#000.00)</td>
<td><h:outputText value="23.332"/> </td>
<td><h:outputText value="23.332">
<c:convertNumber pattern="#000.00" />
</h:outputText> </td>
</tr>
<tr>
<td>Percentage (%)</td>
<td><h:outputText value="92.9%"/></td>
<td><h:outputText value="92.9%">
<c:convertNumber type="percent" />
</h:outputText> </td>
</tr>
<tr>
<td>Currency Code:</td>
<td><h:outputText value="NZD2500"/></td>
<td><h:outputText value="NZD2500">
<c:convertNumber type="currency" currencyCode="NZD" />
</h:outputText> </td>
</tr>
<tr>
<td>Currency Symbol:</td>
<td><h:outputText value="$2500"/></td>
<td><h:outputText value="$2500">
<c:convertNumber type="currency" currencySymbol="$" />
</h:outputText> </td>
</tr>
<tr>
<td>Convert Time (HH:ss)</td>
<td><h:outputText value="1:10:03"/></td>
<td><h:outputText value="1:10:03">
<c:convertDateTime type="time" pattern="HH:mm:ss"/>
</h:outputText> </td>
</tr>
<h:form>
<tr>
<td>Date Format(dd-MM-yyyy)</td>
<td><h:inputText value="#{fdate.date}" converterMessage="Enter in the format of dd-mm-yyyy">
<c:convertDateTime pattern="dd-MM-yyyy"></c:convertDateTime>
</h:inputText></td>
<td> <h:commandButton value="submit" action="show"/></td>
</tr>
</h:form>
</table>
</h:body>
</html>
Output:
When date entered wrong,
[…] Converts in JSF JSF has Standart Converters for numbers and dates. In addition to that you can also create custom converts in JSF.(you can find […]