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<div class="subTitle">org.apache.commons.beanutils.converters</div>
<h2 title="Class NumberConverter" class="title">Class NumberConverter</h2>
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<li><a href="../../../../../org/apache/commons/beanutils/converters/AbstractConverter.html" title="class in org.apache.commons.beanutils.converters">org.apache.commons.beanutils.converters.AbstractConverter</a></li>
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<ul class="inheritance">
<li>org.apache.commons.beanutils.converters.NumberConverter</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../org/apache/commons/beanutils/Converter.html" title="interface in org.apache.commons.beanutils">Converter</a></dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../org/apache/commons/beanutils/converters/BigDecimalConverter.html" title="class in org.apache.commons.beanutils.converters">BigDecimalConverter</a>, <a href="../../../../../org/apache/commons/beanutils/converters/BigIntegerConverter.html" title="class in org.apache.commons.beanutils.converters">BigIntegerConverter</a>, <a href="../../../../../org/apache/commons/beanutils/converters/ByteConverter.html" title="class in org.apache.commons.beanutils.converters">ByteConverter</a>, <a href="../../../../../org/apache/commons/beanutils/converters/DoubleConverter.html" title="class in org.apache.commons.beanutils.converters">DoubleConverter</a>, <a href="../../../../../org/apache/commons/beanutils/converters/FloatConverter.html" title="class in org.apache.commons.beanutils.converters">FloatConverter</a>, <a href="../../../../../org/apache/commons/beanutils/converters/IntegerConverter.html" title="class in org.apache.commons.beanutils.converters">IntegerConverter</a>, <a href="../../../../../org/apache/commons/beanutils/converters/LongConverter.html" title="class in org.apache.commons.beanutils.converters">LongConverter</a>, <a href="../../../../../org/apache/commons/beanutils/converters/ShortConverter.html" title="class in org.apache.commons.beanutils.converters">ShortConverter</a></dd>
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<pre>public abstract class <span class="typeNameLabel">NumberConverter</span>
extends <a href="../../../../../org/apache/commons/beanutils/converters/AbstractConverter.html" title="class in org.apache.commons.beanutils.converters">AbstractConverter</a></pre>
<div class="block"><a href="../../../../../org/apache/commons/beanutils/Converter.html" title="interface in org.apache.commons.beanutils"><code>Converter</code></a> implementaion that handles conversion
to and from <b>java.lang.Number</b> objects.
<p>
This implementation handles conversion for the following
<code>java.lang.Number</code> types.
<ul>
<li><code>java.lang.Byte</code></li>
<li><code>java.lang.Short</code></li>
<li><code>java.lang.Integer</code></li>
<li><code>java.lang.Long</code></li>
<li><code>java.lang.Float</code></li>
<li><code>java.lang.Double</code></li>
<li><code>java.math.BigDecimal</code></li>
<li><code>java.math.BigInteger</code></li>
</ul>
<h3>String Conversions (to and from)</h3>
This class provides a number of ways in which number
conversions to/from Strings can be achieved:
<ul>
<li>Using the default format for the default Locale, configure using:</li>
<ul>
<li><code>setUseLocaleFormat(true)</code></li>
</ul>
<li>Using the default format for a specified Locale, configure using:</li>
<ul>
<li><code>setLocale(Locale)</code></li>
</ul>
<li>Using a specified pattern for the default Locale, configure using:</li>
<ul>
<li><code>setPattern(String)</code></li>
</ul>
<li>Using a specified pattern for a specified Locale, configure using:</li>
<ul>
<li><code>setPattern(String)</code></li>
<li><code>setLocale(Locale)</code></li>
</ul>
<li>If none of the above are configured the
<code>toNumber(String)</code> method is used to convert
from String to Number and the Number's
<code>toString()</code> method used to convert from
Number to String.</li>
</ul>
<p>
<strong>N.B.</strong>Patterns can only be specified using the <i>standard</i>
pattern characters and NOT in <i>localized</i> form (see <code>java.text.DecimalFormat</code>).
For example to cater for number styles used in Germany such as <code>0.000,00</code> the pattern
is specified in the normal form <code>0,000.00</code> and the locale set to <code>Locale.GERMANY</code>.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.8.0</dd>
<dt><span class="simpleTagLabel">Version:</span></dt>
<dd>$Id: NumberConverter.java 1632171 2014-10-15 20:15:17Z ggregory $</dd>
</dl>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#NumberConverter-boolean-">NumberConverter</a></span>(boolean allowDecimals)</code>
<div class="block">Construct a <b>java.lang.Number</b> <i>Converter</i>
that throws a <code>ConversionException</code> if a error occurs.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#NumberConverter-boolean-java.lang.Object-">NumberConverter</a></span>(boolean allowDecimals,
<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> defaultValue)</code>
<div class="block">Construct a <code>java.lang.Number</code> <i>Converter</i> that returns
a default value if an error occurs.</div>
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<td class="colFirst"><code>protected <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#convertToString-java.lang.Object-">convertToString</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> value)</code>
<div class="block">Convert an input Number object into a String.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected <T> T</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#convertToType-java.lang.Class-java.lang.Object-">convertToType</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><T> targetType,
<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> value)</code>
<div class="block">Convert the input object into a Number object of the
specified type.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Locale.html?is-external=true" title="class or interface in java.util">Locale</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#getLocale--">getLocale</a></span>()</code>
<div class="block">Return the Locale for the <i>Converter</i>
(or <code>null</code> if none specified).</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#getPattern--">getPattern</a></span>()</code>
<div class="block">Return the number format pattern used to convert
Numbers to/from a <code>java.lang.String</code>
(or <code>null</code> if none specified).</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#isAllowDecimals--">isAllowDecimals</a></span>()</code>
<div class="block">Return whether decimals are allowed in the number.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#setLocale-java.util.Locale-">setLocale</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/util/Locale.html?is-external=true" title="class or interface in java.util">Locale</a> locale)</code>
<div class="block">Set the Locale for the <i>Converter</i>.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#setPattern-java.lang.String-">setPattern</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> pattern)</code>
<div class="block">Set a number format pattern to use to convert
Numbers to/from a <code>java.lang.String</code>.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#setUseLocaleFormat-boolean-">setUseLocaleFormat</a></span>(boolean useLocaleFormat)</code>
<div class="block">Set whether a format should be used to convert
the Number.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/beanutils/converters/NumberConverter.html#toString--">toString</a></span>()</code>
<div class="block">Provide a String representation of this number converter.</div>
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<h4>NumberConverter</h4>
<pre>public NumberConverter(boolean allowDecimals)</pre>
<div class="block">Construct a <b>java.lang.Number</b> <i>Converter</i>
that throws a <code>ConversionException</code> if a error occurs.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>allowDecimals</code> - Indicates whether decimals are allowed</dd>
</dl>
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<pre>public NumberConverter(boolean allowDecimals,
<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> defaultValue)</pre>
<div class="block">Construct a <code>java.lang.Number</code> <i>Converter</i> that returns
a default value if an error occurs.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>allowDecimals</code> - Indicates whether decimals are allowed</dd>
<dd><code>defaultValue</code> - The default value to be returned</dd>
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<pre>public boolean isAllowDecimals()</pre>
<div class="block">Return whether decimals are allowed in the number.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Whether decimals are allowed in the number</dd>
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<pre>public void setUseLocaleFormat(boolean useLocaleFormat)</pre>
<div class="block">Set whether a format should be used to convert
the Number.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>useLocaleFormat</code> - <code>true</code> if a number format
should be used.</dd>
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<pre>public <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> getPattern()</pre>
<div class="block">Return the number format pattern used to convert
Numbers to/from a <code>java.lang.String</code>
(or <code>null</code> if none specified).
<p>
See <code>java.text.DecimalFormat</code> for details
of how to specify the pattern.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The format pattern.</dd>
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<pre>public void setPattern(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> pattern)</pre>
<div class="block">Set a number format pattern to use to convert
Numbers to/from a <code>java.lang.String</code>.
<p>
See <code>java.text.DecimalFormat</code> for details
of how to specify the pattern.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pattern</code> - The format pattern.</dd>
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<pre>public <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Locale.html?is-external=true" title="class or interface in java.util">Locale</a> getLocale()</pre>
<div class="block">Return the Locale for the <i>Converter</i>
(or <code>null</code> if none specified).</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The locale to use for conversion</dd>
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<pre>public void setLocale(<a href="http://docs.oracle.com/javase/6/docs/api/java/util/Locale.html?is-external=true" title="class or interface in java.util">Locale</a> locale)</pre>
<div class="block">Set the Locale for the <i>Converter</i>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>locale</code> - The locale to use for conversion</dd>
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<h4>convertToString</h4>
<pre>protected <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> convertToString(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> value)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></pre>
<div class="block">Convert an input Number object into a String.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/commons/beanutils/converters/AbstractConverter.html#convertToString-java.lang.Object-">convertToString</a></code> in class <code><a href="../../../../../org/apache/commons/beanutils/converters/AbstractConverter.html" title="class in org.apache.commons.beanutils.converters">AbstractConverter</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>value</code> - The input value to be converted</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the converted String value.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></code> - if an error occurs converting to a String</dd>
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<pre>protected <T> T convertToType(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><T> targetType,
<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> value)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></pre>
<div class="block">Convert the input object into a Number object of the
specified type.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/apache/commons/beanutils/converters/AbstractConverter.html#convertToType-java.lang.Class-java.lang.Object-">convertToType</a></code> in class <code><a href="../../../../../org/apache/commons/beanutils/converters/AbstractConverter.html" title="class in org.apache.commons.beanutils.converters">AbstractConverter</a></code></dd>
<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - Target type of the conversion.</dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>targetType</code> - Data type to which this value should be converted.</dd>
<dd><code>value</code> - The input value to be converted.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The converted value.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></code> - if an error occurs converting to the specified type</dd>
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<pre>public <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> toString()</pre>
<div class="block">Provide a String representation of this number converter.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/commons/beanutils/converters/AbstractConverter.html#toString--">toString</a></code> in class <code><a href="../../../../../org/apache/commons/beanutils/converters/AbstractConverter.html" title="class in org.apache.commons.beanutils.converters">AbstractConverter</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A String representation of this number converter</dd>
</dl>
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