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<!DOCTYPE HTML>
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<title>Double (Java SE 12 & JDK 12 )</title>
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<h2 title="Class Double" class="title">Class Double</h2>
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<hr>
<pre>public final class <span class="typeNameLabel">Double</span>
extends <a href="Number.html" title="class in java.lang">Number</a>
implements <a href="Comparable.html" title="interface in java.lang">Comparable</a><<a href="Double.html" title="class in java.lang">Double</a>>, <a href="constant/Constable.html" title="interface in java.lang.constant">Constable</a>, <a href="constant/ConstantDesc.html" title="interface in java.lang.constant">ConstantDesc</a></pre>
<div class="block">The <code>Double</code> class wraps a value of the primitive type
<code>double</code> in an object. An object of type
<code>Double</code> contains a single field whose type is
<code>double</code>.
<p>In addition, this class provides several methods for converting a
<code>double</code> to a <code>String</code> and a
<code>String</code> to a <code>double</code>, as well as other
constants and methods useful when dealing with a
<code>double</code>.</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.Double">Serialized Form</a></dd>
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<caption><span>Fields</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#BYTES">BYTES</a></span></code></th>
<td class="colLast">
<div class="block">The number of bytes used to represent a <code>double</code> value.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#MAX_EXPONENT">MAX_EXPONENT</a></span></code></th>
<td class="colLast">
<div class="block">Maximum exponent a finite <code>double</code> variable may have.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#MAX_VALUE">MAX_VALUE</a></span></code></th>
<td class="colLast">
<div class="block">A constant holding the largest positive finite value of type
<code>double</code>,
(2-2<sup>-52</sup>)·2<sup>1023</sup>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#MIN_EXPONENT">MIN_EXPONENT</a></span></code></th>
<td class="colLast">
<div class="block">Minimum exponent a normalized <code>double</code> variable may
have.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#MIN_NORMAL">MIN_NORMAL</a></span></code></th>
<td class="colLast">
<div class="block">A constant holding the smallest positive normal value of type
<code>double</code>, 2<sup>-1022</sup>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#MIN_VALUE">MIN_VALUE</a></span></code></th>
<td class="colLast">
<div class="block">A constant holding the smallest positive nonzero value of type
<code>double</code>, 2<sup>-1074</sup>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#NaN">NaN</a></span></code></th>
<td class="colLast">
<div class="block">A constant holding a Not-a-Number (NaN) value of type
<code>double</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#NEGATIVE_INFINITY">NEGATIVE_INFINITY</a></span></code></th>
<td class="colLast">
<div class="block">A constant holding the negative infinity of type
<code>double</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#POSITIVE_INFINITY">POSITIVE_INFINITY</a></span></code></th>
<td class="colLast">
<div class="block">A constant holding the positive infinity of type
<code>double</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SIZE">SIZE</a></span></code></th>
<td class="colLast">
<div class="block">The number of bits used to represent a <code>double</code> value.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="Class.html" title="class in java.lang">Class</a><<a href="Double.html" title="class in java.lang">Double</a>></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#TYPE">TYPE</a></span></code></th>
<td class="colLast">
<div class="block">The <code>Class</code> instance representing the primitive type
<code>double</code>.</div>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(double)">Double</a></span>​(double value)</code></th>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span>
<div class="deprecationComment">It is rarely appropriate to use this constructor.</div>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span>
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<h3>Method Summary</h3>
<div class="memberSummary">
<div role="tablist" aria-orientation="horizontal"><button role="tab" aria-selected="true" aria-controls="memberSummary_tabpanel" tabindex="0" onkeydown="switchTab(event)" id="t0" class="activeTableTab">All Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t1" class="tableTab" onclick="show(1);">Static Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t2" class="tableTab" onclick="show(2);">Instance Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t4" class="tableTab" onclick="show(8);">Concrete Methods</button></div>
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<table aria-labelledby="t0">
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor" id="i0">
<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 this <code>Double</code> as a <code>byte</code>
after a narrowing primitive conversion.</div>
</td>
</tr>
<tr class="rowColor" id="i1">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#compare(double,double)">compare</a></span>​(double d1,
double d2)</code></th>
<td class="colLast">
<div class="block">Compares the two specified <code>double</code> values.</div>
</td>
</tr>
<tr class="altColor" id="i2">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#compareTo(java.lang.Double)">compareTo</a></span>​(<a href="Double.html" title="class in java.lang">Double</a> anotherDouble)</code></th>
<td class="colLast">
<div class="block">Compares two <code>Double</code> objects numerically.</div>
</td>
</tr>
<tr class="rowColor" id="i3">
<td class="colFirst"><code><a href="../util/Optional.html" title="class in java.util">Optional</a><<a href="Double.html" title="class in java.lang">Double</a>></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#describeConstable()">describeConstable</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns an <a href="../util/Optional.html" title="class in java.util"><code>Optional</code></a> containing the nominal descriptor for this
instance, which is the instance itself.</div>
</td>
</tr>
<tr class="altColor" id="i4">
<td class="colFirst"><code>static long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#doubleToLongBits(double)">doubleToLongBits</a></span>​(double value)</code></th>
<td class="colLast">
<div class="block">Returns a representation of the specified floating-point value
according to the IEEE 754 floating-point "double
format" bit layout.</div>
</td>
</tr>
<tr class="rowColor" id="i5">
<td class="colFirst"><code>static long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#doubleToRawLongBits(double)">doubleToRawLongBits</a></span>​(double value)</code></th>
<td class="colLast">
<div class="block">Returns a representation of the specified floating-point value
according to the IEEE 754 floating-point "double
format" bit layout, preserving Not-a-Number (NaN) values.</div>
</td>
</tr>
<tr class="altColor" id="i6">
<td class="colFirst"><code>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 <code>double</code> value of this <code>Double</code> object.</div>
</td>
</tr>
<tr class="rowColor" id="i7">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object)">equals</a></span>​(<a href="Object.html" title="class in java.lang">Object</a> obj)</code></th>
<td class="colLast">
<div class="block">Compares this object against the specified object.</div>
</td>
</tr>
<tr class="altColor" id="i8">
<td class="colFirst"><code>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 this <code>Double</code> as a <code>float</code>
after a narrowing primitive conversion.</div>
</td>
</tr>
<tr class="rowColor" id="i9">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode()">hashCode</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a hash code for this <code>Double</code> object.</div>
</td>
</tr>
<tr class="altColor" id="i10">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode(double)">hashCode</a></span>​(double value)</code></th>
<td class="colLast">
<div class="block">Returns a hash code for a <code>double</code> value; compatible with
<code>Double.hashCode()</code>.</div>
</td>
</tr>
<tr class="rowColor" id="i11">
<td class="colFirst"><code>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 this <code>Double</code> as an <code>int</code>
after a narrowing primitive conversion.</div>
</td>
</tr>
<tr class="altColor" id="i12">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isFinite(double)">isFinite</a></span>​(double d)</code></th>
<td class="colLast">
<div class="block">Returns <code>true</code> if the argument is a finite floating-point
value; returns <code>false</code> otherwise (for NaN and infinity
arguments).</div>
</td>
</tr>
<tr class="rowColor" id="i13">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isInfinite()">isInfinite</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns <code>true</code> if this <code>Double</code> value is
infinitely large in magnitude, <code>false</code> otherwise.</div>
</td>
</tr>
<tr class="altColor" id="i14">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isInfinite(double)">isInfinite</a></span>​(double v)</code></th>
<td class="colLast">
<div class="block">Returns <code>true</code> if the specified number is infinitely
large in magnitude, <code>false</code> otherwise.</div>
</td>
</tr>
<tr class="rowColor" id="i15">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isNaN()">isNaN</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns <code>true</code> if this <code>Double</code> value is
a Not-a-Number (NaN), <code>false</code> otherwise.</div>
</td>
</tr>
<tr class="altColor" id="i16">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isNaN(double)">isNaN</a></span>​(double v)</code></th>
<td class="colLast">
<div class="block">Returns <code>true</code> if the specified number is a
Not-a-Number (NaN) value, <code>false</code> otherwise.</div>
</td>
</tr>
<tr class="rowColor" id="i17">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#longBitsToDouble(long)">longBitsToDouble</a></span>​(long bits)</code></th>
<td class="colLast">
<div class="block">Returns the <code>double</code> value corresponding to a given
bit representation.</div>
</td>
</tr>
<tr class="altColor" id="i18">
<td class="colFirst"><code>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 this <code>Double</code> as a <code>long</code>
after a narrowing primitive conversion.</div>
</td>
</tr>
<tr class="rowColor" id="i19">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#max(double,double)">max</a></span>​(double a,
double b)</code></th>
<td class="colLast">
<div class="block">Returns the greater of two <code>double</code> values
as if by calling <a href="Math.html#max(double,double)"><code>Math.max</code></a>.</div>
</td>
</tr>
<tr class="altColor" id="i20">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#min(double,double)">min</a></span>​(double a,
double b)</code></th>
<td class="colLast">
<div class="block">Returns the smaller of two <code>double</code> values
as if by calling <a href="Math.html#min(double,double)"><code>Math.min</code></a>.</div>
</td>
</tr>
<tr class="rowColor" id="i21">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#parseDouble(java.lang.String)">parseDouble</a></span>​(<a href="String.html" title="class in java.lang">String</a> s)</code></th>
<td class="colLast">
<div class="block">Returns a new <code>double</code> initialized to the value
represented by the specified <code>String</code>, as performed
by the <code>valueOf</code> method of class
<code>Double</code>.</div>
</td>
</tr>
<tr class="altColor" id="i22">
<td class="colFirst"><code><a href="Double.html" title="class in java.lang">Double</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#resolveConstantDesc(java.lang.invoke.MethodHandles.Lookup)">resolveConstantDesc</a></span>​(<a href="invoke/MethodHandles.Lookup.html" title="class in java.lang.invoke">MethodHandles.Lookup</a> lookup)</code></th>
<td class="colLast">
<div class="block">Resolves this instance as a <a href="constant/ConstantDesc.html" title="interface in java.lang.constant"><code>ConstantDesc</code></a>, the result of which is
the instance itself.</div>
</td>
</tr>
<tr class="rowColor" id="i23">
<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 this <code>Double</code> as a <code>short</code>
after a narrowing primitive conversion.</div>
</td>
</tr>
<tr class="altColor" id="i24">
<td class="colFirst"><code>static double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#sum(double,double)">sum</a></span>​(double a,
double b)</code></th>
<td class="colLast">
<div class="block">Adds two <code>double</code> values together as per the + operator.</div>
</td>
</tr>
<tr class="rowColor" id="i25">
<td class="colFirst"><code>static <a href="String.html" title="class in java.lang">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toHexString(double)">toHexString</a></span>​(double d)</code></th>
<td class="colLast">
<div class="block">Returns a hexadecimal string representation of the
<code>double</code> argument.</div>
</td>
</tr>
<tr class="altColor" id="i26">
<td class="colFirst"><code><a href="String.html" title="class in java.lang">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a string representation of this <code>Double</code> object.</div>
</td>
</tr>
<tr class="rowColor" id="i27">
<td class="colFirst"><code>static <a href="String.html" title="class in java.lang">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString(double)">toString</a></span>​(double d)</code></th>
<td class="colLast">
<div class="block">Returns a string representation of the <code>double</code>
argument.</div>
</td>
</tr>
<tr class="altColor" id="i28">
<td class="colFirst"><code>static <a href="Double.html" title="class in java.lang">Double</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#valueOf(double)">valueOf</a></span>​(double d)</code></th>
<td class="colLast">
<div class="block">Returns a <code>Double</code> instance representing the specified
<code>double</code> value.</div>
</td>
</tr>
<tr class="rowColor" id="i29">
<td class="colFirst"><code>static <a href="Double.html" title="class in java.lang">Double</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#valueOf(java.lang.String)">valueOf</a></span>​(<a href="String.html" title="class in java.lang">String</a> s)</code></th>
<td class="colLast">
<div class="block">Returns a <code>Double</code> object holding the
<code>double</code> value represented by the argument string
<code>s</code>.</div>
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<h3>Methods declared in class java.lang.<a href="Object.html" title="class in java.lang">Object</a></h3>
<code><a href="Object.html#clone()">clone</a>, <a href="Object.html#finalize()">finalize</a>, <a href="Object.html#getClass()">getClass</a>, <a href="Object.html#notify()">notify</a>, <a href="Object.html#notifyAll()">notifyAll</a>, <a href="Object.html#wait()">wait</a>, <a href="Object.html#wait(long)">wait</a>, <a href="Object.html#wait(long,int)">wait</a></code></li>
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<h3>Field Detail</h3>
<a id="POSITIVE_INFINITY">
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<h4>POSITIVE_INFINITY</h4>
<pre>public static final double POSITIVE_INFINITY</pre>
<div class="block">A constant holding the positive infinity of type
<code>double</code>. It is equal to the value returned by
<code>Double.longBitsToDouble(0x7ff0000000000000L)</code>.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#java.lang.Double.POSITIVE_INFINITY">Constant Field Values</a></dd>
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<h4>NEGATIVE_INFINITY</h4>
<pre>public static final double NEGATIVE_INFINITY</pre>
<div class="block">A constant holding the negative infinity of type
<code>double</code>. It is equal to the value returned by
<code>Double.longBitsToDouble(0xfff0000000000000L)</code>.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#java.lang.Double.NEGATIVE_INFINITY">Constant Field Values</a></dd>
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<h4>NaN</h4>
<pre>public static final double NaN</pre>
<div class="block">A constant holding a Not-a-Number (NaN) value of type
<code>double</code>. It is equivalent to the value returned by
<code>Double.longBitsToDouble(0x7ff8000000000000L)</code>.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#java.lang.Double.NaN">Constant Field Values</a></dd>
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<h4>MAX_VALUE</h4>
<pre>public static final double MAX_VALUE</pre>
<div class="block">A constant holding the largest positive finite value of type
<code>double</code>,
(2-2<sup>-52</sup>)·2<sup>1023</sup>. It is equal to
the hexadecimal floating-point literal
<code>0x1.fffffffffffffP+1023</code> and also equal to
<code>Double.longBitsToDouble(0x7fefffffffffffffL)</code>.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#java.lang.Double.MAX_VALUE">Constant Field Values</a></dd>
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<h4>MIN_NORMAL</h4>
<pre>public static final double MIN_NORMAL</pre>
<div class="block">A constant holding the smallest positive normal value of type
<code>double</code>, 2<sup>-1022</sup>. It is equal to the
hexadecimal floating-point literal <code>0x1.0p-1022</code> and also
equal to <code>Double.longBitsToDouble(0x0010000000000000L)</code>.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.6</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#java.lang.Double.MIN_NORMAL">Constant Field Values</a></dd>
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<pre>public static final double MIN_VALUE</pre>
<div class="block">A constant holding the smallest positive nonzero value of type
<code>double</code>, 2<sup>-1074</sup>. It is equal to the
hexadecimal floating-point literal
<code>0x0.0000000000001P-1022</code> and also equal to
<code>Double.longBitsToDouble(0x1L)</code>.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#java.lang.Double.MIN_VALUE">Constant Field Values</a></dd>
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<h4>MAX_EXPONENT</h4>
<pre>public static final int MAX_EXPONENT</pre>
<div class="block">Maximum exponent a finite <code>double</code> variable may have.
It is equal to the value returned by
<code>Math.getExponent(Double.MAX_VALUE)</code>.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.6</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#java.lang.Double.MAX_EXPONENT">Constant Field Values</a></dd>
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<pre>public static final int MIN_EXPONENT</pre>
<div class="block">Minimum exponent a normalized <code>double</code> variable may
have. It is equal to the value returned by
<code>Math.getExponent(Double.MIN_NORMAL)</code>.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.6</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#java.lang.Double.MIN_EXPONENT">Constant Field Values</a></dd>
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<h4>SIZE</h4>
<pre>public static final int SIZE</pre>
<div class="block">The number of bits used to represent a <code>double</code> value.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.5</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#java.lang.Double.SIZE">Constant Field Values</a></dd>
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<h4>BYTES</h4>
<pre>public static final int BYTES</pre>
<div class="block">The number of bytes used to represent a <code>double</code> value.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.8</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#java.lang.Double.BYTES">Constant Field Values</a></dd>
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<h4>TYPE</h4>
<pre>public static final <a href="Class.html" title="class in java.lang">Class</a><<a href="Double.html" title="class in java.lang">Double</a>> TYPE</pre>
<div class="block">The <code>Class</code> instance representing the primitive type
<code>double</code>.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1</dd>
</dl>
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<h4>Double</h4>
<pre><a href="Deprecated.html" title="annotation in java.lang">@Deprecated</a>(<a href="Deprecated.html#since()">since</a>="9")
public Double​(double value)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span>
<div class="deprecationComment">It is rarely appropriate to use this constructor. The static factory
<a href="#valueOf(double)"><code>valueOf(double)</code></a> is generally a better choice, as it is
likely to yield significantly better space and time performance.</div>
</div>
<div class="block">Constructs a newly allocated <code>Double</code> object that
represents the primitive <code>double</code> argument.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>value</code> - the value to be represented by the <code>Double</code>.</dd>
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<h4>Double</h4>
<pre><a href="Deprecated.html" title="annotation in java.lang">@Deprecated</a>(<a href="Deprecated.html#since()">since</a>="9")
public Double​(<a href="String.html" title="class in java.lang">String</a> s)
throws <a href="NumberFormatException.html" title="class in java.lang">NumberFormatException</a></pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span>
<div class="deprecationComment">It is rarely appropriate to use this constructor.
Use <a href="#parseDouble(java.lang.String)"><code>parseDouble(String)</code></a> to convert a string to a
<code>double</code> primitive, or use <a href="#valueOf(java.lang.String)"><code>valueOf(String)</code></a>
to convert a string to a <code>Double</code> object.</div>
</div>
<div class="block">Constructs a newly allocated <code>Double</code> object that
represents the floating-point value of type <code>double</code>
represented by the string. The string is converted to a
<code>double</code> value as if by the <code>valueOf</code> method.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>s</code> - a string to be converted to a <code>Double</code>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="NumberFormatException.html" title="class in java.lang">NumberFormatException</a></code> - if the string does not contain a
parsable number.</dd>
</dl>
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<h3>Method Detail</h3>
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<h4>toString</h4>
<pre class="methodSignature">public static <a href="String.html" title="class in java.lang">String</a> toString​(double d)</pre>
<div class="block">Returns a string representation of the <code>double</code>
argument. All characters mentioned below are ASCII characters.
<ul>
<li>If the argument is NaN, the result is the string
"<code>NaN</code>".
<li>Otherwise, the result is a string that represents the sign and
magnitude (absolute value) of the argument. If the sign is negative,
the first character of the result is '<code>-</code>'
(<code>'\u002D'</code>); if the sign is positive, no sign character
appears in the result. As for the magnitude <i>m</i>:
<ul>
<li>If <i>m</i> is infinity, it is represented by the characters
<code>"Infinity"</code>; thus, positive infinity produces the result
<code>"Infinity"</code> and negative infinity produces the result
<code>"-Infinity"</code>.
<li>If <i>m</i> is zero, it is represented by the characters
<code>"0.0"</code>; thus, negative zero produces the result
<code>"-0.0"</code> and positive zero produces the result
<code>"0.0"</code>.
<li>If <i>m</i> is greater than or equal to 10<sup>-3</sup> but less
than 10<sup>7</sup>, then it is represented as the integer part of
<i>m</i>, in decimal form with no leading zeroes, followed by
'<code>.</code>' (<code>'\u002E'</code>), followed by one or
more decimal digits representing the fractional part of <i>m</i>.
<li>If <i>m</i> is less than 10<sup>-3</sup> or greater than or
equal to 10<sup>7</sup>, then it is represented in so-called
"computerized scientific notation." Let <i>n</i> be the unique
integer such that 10<sup><i>n</i></sup> ≤ <i>m</i> <
10<sup><i>n</i>+1</sup>; then let <i>a</i> be the
mathematically exact quotient of <i>m</i> and
10<sup><i>n</i></sup> so that 1 ≤ <i>a</i> < 10. The
magnitude is then represented as the integer part of <i>a</i>,
as a single decimal digit, followed by '<code>.</code>'
(<code>'\u002E'</code>), followed by decimal digits
representing the fractional part of <i>a</i>, followed by the
letter '<code>E</code>' (<code>'\u0045'</code>), followed
by a representation of <i>n</i> as a decimal integer, as
produced by the method <a href="Integer.html#toString(int)"><code>Integer.toString(int)</code></a>.
</ul>
</ul>
How many digits must be printed for the fractional part of
<i>m</i> or <i>a</i>? There must be at least one digit to represent
the fractional part, and beyond that as many, but only as many, more
digits as are needed to uniquely distinguish the argument value from
adjacent values of type <code>double</code>. That is, suppose that
<i>x</i> is the exact mathematical value represented by the decimal
representation produced by this method for a finite nonzero argument
<i>d</i>. Then <i>d</i> must be the <code>double</code> value nearest
to <i>x</i>; or if two <code>double</code> values are equally close
to <i>x</i>, then <i>d</i> must be one of them and the least
significant bit of the significand of <i>d</i> must be <code>0</code>.
<p>To create localized string representations of a floating-point
value, use subclasses of <a href="../text/NumberFormat.html" title="class in java.text"><code>NumberFormat</code></a>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>d</code> - the <code>double</code> to be converted.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a string representation of the argument.</dd>
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<h4>toHexString</h4>
<pre class="methodSignature">public static <a href="String.html" title="class in java.lang">String</a> toHexString​(double d)</pre>
<div class="block">Returns a hexadecimal string representation of the
<code>double</code> argument. All characters mentioned below
are ASCII characters.
<ul>
<li>If the argument is NaN, the result is the string
"<code>NaN</code>".
<li>Otherwise, the result is a string that represents the sign
and magnitude of the argument. If the sign is negative, the
first character of the result is '<code>-</code>'
(<code>'\u002D'</code>); if the sign is positive, no sign
character appears in the result. As for the magnitude <i>m</i>:
<ul>
<li>If <i>m</i> is infinity, it is represented by the string
<code>"Infinity"</code>; thus, positive infinity produces the
result <code>"Infinity"</code> and negative infinity produces
the result <code>"-Infinity"</code>.
<li>If <i>m</i> is zero, it is represented by the string
<code>"0x0.0p0"</code>; thus, negative zero produces the result
<code>"-0x0.0p0"</code> and positive zero produces the result
<code>"0x0.0p0"</code>.
<li>If <i>m</i> is a <code>double</code> value with a
normalized representation, substrings are used to represent the
significand and exponent fields. The significand is
represented by the characters <code>"0x1."</code>
followed by a lowercase hexadecimal representation of the rest
of the significand as a fraction. Trailing zeros in the
hexadecimal representation are removed unless all the digits
are zero, in which case a single zero is used. Next, the
exponent is represented by <code>"p"</code> followed
by a decimal string of the unbiased exponent as if produced by
a call to <a href="Integer.html#toString(int)"><code>Integer.toString</code></a> on the
exponent value.
<li>If <i>m</i> is a <code>double</code> value with a subnormal
representation, the significand is represented by the
characters <code>"0x0."</code> followed by a
hexadecimal representation of the rest of the significand as a
fraction. Trailing zeros in the hexadecimal representation are