The <fmt:formatNumber> tag is used to format numbers, percentages, and currencies.
Attribute
The <fmt:formatNumber> tag has the following attributes −
| Attribute | Description | Required | Default |
|---|---|---|---|
| Value | Numeric value to display | Yes | None |
| type | NUMBER, CURRENCY, or PERCENT | No | Number |
| pattern | Specify a custom formatting pattern for the output. | No | None |
| currencyCode | Currency code (for type = "currency") | No | From the default locale |
| currencySymbol | Currency symbol (for type = "currency") | No | From the default locale |
| groupingUsed | Whether to group numbers (TRUE or FALSE) | No | true |
| maxIntegerDigits | Maximum number of integer digits to print | No | None |
| minIntegerDigits | Minimum number of integer digits to print | No | None |
| maxFractionDigits | Maximum number of fractional digits to print | No | None |
| minFractionDigits | Minimum number of fractional digits to print | No | None |
| var | Name of the variable to store the formatted number | No | Print to page |
| scope | Scope of the variable to store the formatted number | No | page |
Example
<%@ taglib prefix = "c" uri = "https://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix = "fmt" uri = "https://java.sun.com/jsp/jstl/fmt" %>
<html>
<head>
<title>JSTL fmt:formatNumber Tag</title>
</head>
<body>
<h3>Number Format:</h3>
<c:set var = "balance" value = "120000.2309" />
<p>Formatted Number (1): <fmt:formatNumber value = "${balance}" type = "currency"/></p>
<p>Formatted Number (2): <fmt:formatNumber type = "number" maxIntegerDigits = "3" value = "${balance}" /></p>
<p>Formatted Number (3): <fmt:formatNumber type = "number" maxFractionDigits = "3" value = "${balance}" /></p>
<p>Formatted Number (4): <fmt:formatNumber type = "number" groupingUsed = "false" value = "${balance}" /></p>
</body>
</html>The above code will generate the following result −
Number Format: Formatted Number (1): £120,000.23 Formatted Number (2): 000.231 Formatted Number (3): 120,000.231 Formatted Number (4): 120000.231