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<!DOCTYPE HTML>
<!-- NewPage -->
<html lang="en">
<head>
<!-- Generated by javadoc -->
<title>Number (Java SE 12 & JDK 12 )</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="keywords" content="java.lang.Number class">
<meta name="keywords" content="intValue()">
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<meta name="keywords" content="doubleValue()">
<meta name="keywords" content="byteValue()">
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<h2 title="Class Number" class="title">Class Number</h2>
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<dt>Direct Known Subclasses:</dt>
<dd><code><a href="../util/concurrent/atomic/AtomicInteger.html" title="class in java.util.concurrent.atomic">AtomicInteger</a></code>, <code><a href="../util/concurrent/atomic/AtomicLong.html" title="class in java.util.concurrent.atomic">AtomicLong</a></code>, <code><a href="../math/BigDecimal.html" title="class in java.math">BigDecimal</a></code>, <code><a href="../math/BigInteger.html" title="class in java.math">BigInteger</a></code>, <code><a href="Byte.html" title="class in java.lang">Byte</a></code>, <code><a href="Double.html" title="class in java.lang">Double</a></code>, <code><a href="../util/concurrent/atomic/DoubleAccumulator.html" title="class in java.util.concurrent.atomic">DoubleAccumulator</a></code>, <code><a href="../util/concurrent/atomic/DoubleAdder.html" title="class in java.util.concurrent.atomic">DoubleAdder</a></code>, <code><a href="Float.html" title="class in java.lang">Float</a></code>, <code><a href="Integer.html" title="class in java.lang">Integer</a></code>, <code><a href="Long.html" title="class in java.lang">Long</a></code>, <code><a href="../util/concurrent/atomic/LongAccumulator.html" title="class in java.util.concurrent.atomic">LongAccumulator</a></code>, <code><a href="../util/concurrent/atomic/LongAdder.html" title="class in java.util.concurrent.atomic">LongAdder</a></code>, <code><a href="Short.html" title="class in java.lang">Short</a></code></dd>
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<pre>public abstract class <span class="typeNameLabel">Number</span>
extends <a href="Object.html" title="class in java.lang">Object</a>
implements <a href="../io/Serializable.html" title="interface in java.io">Serializable</a></pre>
<div class="block">The abstract class <code>Number</code> is the superclass of platform
classes representing numeric values that are convertible to the
primitive types <code>byte</code>, <code>double</code>, <code>float</code>, <code>
int</code>, <code>long</code>, and <code>short</code>.
The specific semantics of the conversion from the numeric value of
a particular <code>Number</code> implementation to a given primitive
type is defined by the <code>Number</code> implementation in question.
For platform classes, the conversion is often analogous to a
narrowing primitive conversion or a widening primitive conversion
as defined in <cite>The Java™ Language Specification</cite>
for converting between primitive types. Therefore, conversions may
lose information about the overall magnitude of a numeric value, may
lose precision, and may even return a result of a different sign
than the input.
See the documentation of a given <code>Number</code> implementation for
conversion details.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.0</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../serialized-form.html#java.lang.Number">Serialized Form</a></dd>
<dt><span class="simpleTagLabel">See <cite>The Java™ Language Specification</cite>:</span></dt>
<dd>5.1.2 Widening Primitive Conversions, 5.1.3 Narrowing Primitive Conversions</dd>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">Number</a></span>()</code></th>
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<td class="colFirst"><code>byte</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#byteValue()">byteValue</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the value of the specified number as a <code>byte</code>.</div>
</td>
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<tr class="rowColor" id="i1">
<td class="colFirst"><code>abstract double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#doubleValue()">doubleValue</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the value of the specified number as a <code>double</code>.</div>
</td>
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<td class="colFirst"><code>abstract float</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#floatValue()">floatValue</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the value of the specified number as a <code>float</code>.</div>
</td>
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<td class="colFirst"><code>abstract int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#intValue()">intValue</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the value of the specified number as an <code>int</code>.</div>
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<td class="colFirst"><code>abstract long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#longValue()">longValue</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the value of the specified number as a <code>long</code>.</div>
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<td class="colFirst"><code>short</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#shortValue()">shortValue</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the value of the specified number as a <code>short</code>.</div>
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<h4>Number</h4>
<pre>public Number()</pre>
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<pre class="methodSignature">public abstract int intValue()</pre>
<div class="block">Returns the value of the specified number as an <code>int</code>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the numeric value represented by this object after conversion
to type <code>int</code>.</dd>
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<pre class="methodSignature">public abstract long longValue()</pre>
<div class="block">Returns the value of the specified number as a <code>long</code>.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>the numeric value represented by this object after conversion
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<dd>the numeric value represented by this object after conversion
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<pre class="methodSignature">public abstract double doubleValue()</pre>
<div class="block">Returns the value of the specified number as a <code>double</code>.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>the numeric value represented by this object after conversion
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<pre class="methodSignature">public byte byteValue()</pre>
<div class="block">Returns the value of the specified number as a <code>byte</code>.
<p>This implementation returns the result of <a href="#intValue()"><code>intValue()</code></a> cast
to a <code>byte</code>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the numeric value represented by this object after conversion
to type <code>byte</code>.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1</dd>
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<pre class="methodSignature">public short shortValue()</pre>
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<p>This implementation returns the result of <a href="#intValue()"><code>intValue()</code></a> cast
to a <code>short</code>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the numeric value represented by this object after conversion
to type <code>short</code>.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1</dd>
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