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<div class="subTitle">org.joda.time</div>
<h2 title="Interface ReadWritableInstant" class="title">Interface ReadWritableInstant</h2>
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<dt>All Superinterfaces:</dt>
<dd><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../org/joda/time/ReadableInstant.html" title="interface in org.joda.time">ReadableInstant</a>&gt;, <a href="../../../org/joda/time/ReadableInstant.html" title="interface in org.joda.time">ReadableInstant</a></dd>
</dl>
<dl>
<dt>All Known Subinterfaces:</dt>
<dd><a href="../../../org/joda/time/ReadWritableDateTime.html" title="interface in org.joda.time">ReadWritableDateTime</a></dd>
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<dl>
<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../org/joda/time/MutableDateTime.html" title="class in org.joda.time">MutableDateTime</a></dd>
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<pre>public interface <span class="strong">ReadWritableInstant</span>
extends <a href="../../../org/joda/time/ReadableInstant.html" title="interface in org.joda.time">ReadableInstant</a></pre>
<div class="block">Defines an instant in the datetime continuum that can be queried and modified.
 This interface expresses the datetime as milliseconds from 1970-01-01T00:00:00Z.
 <p>
 The implementation of this interface will be mutable.
 It may provide more advanced methods than those in the interface.</div>
<dl><dt><span class="strong">Since:</span></dt>
  <dd>1.0</dd></dl>
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<h3>Method Summary</h3>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#add(org.joda.time.DurationFieldType,%20int)">add</a></strong>(<a href="../../../org/joda/time/DurationFieldType.html" title="class in org.joda.time">DurationFieldType</a>&nbsp;type,
   int&nbsp;amount)</code>
<div class="block">Adds to the instant specifying the duration and multiple to add.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#add(long)">add</a></strong>(long&nbsp;duration)</code>
<div class="block">Adds a millisecond duration to this instant.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#add(org.joda.time.ReadableDuration)">add</a></strong>(<a href="../../../org/joda/time/ReadableDuration.html" title="interface in org.joda.time">ReadableDuration</a>&nbsp;duration)</code>
<div class="block">Adds a duration to this instant.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#add(org.joda.time.ReadableDuration,%20int)">add</a></strong>(<a href="../../../org/joda/time/ReadableDuration.html" title="interface in org.joda.time">ReadableDuration</a>&nbsp;duration,
   int&nbsp;scalar)</code>
<div class="block">Adds a duration to this instant specifying how many times to add.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#add(org.joda.time.ReadablePeriod)">add</a></strong>(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a>&nbsp;period)</code>
<div class="block">Adds a period to this instant.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#add(org.joda.time.ReadablePeriod,%20int)">add</a></strong>(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a>&nbsp;period,
   int&nbsp;scalar)</code>
<div class="block">Adds a period to this instant specifying how many times to add.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#set(org.joda.time.DateTimeFieldType,%20int)">set</a></strong>(<a href="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</a>&nbsp;type,
   int&nbsp;value)</code>
<div class="block">Sets the value of one of the fields of the instant, such as hourOfDay.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#setChronology(org.joda.time.Chronology)">setChronology</a></strong>(<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a>&nbsp;chronology)</code>
<div class="block">Sets the chronology of the datetime, which has no effect if not applicable.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#setMillis(long)">setMillis</a></strong>(long&nbsp;instant)</code>
<div class="block">Sets the value as the number of milliseconds since
 the epoch, 1970-01-01T00:00:00Z.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#setMillis(org.joda.time.ReadableInstant)">setMillis</a></strong>(<a href="../../../org/joda/time/ReadableInstant.html" title="interface in org.joda.time">ReadableInstant</a>&nbsp;instant)</code>
<div class="block">Sets the millisecond instant of this instant from another.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#setZone(org.joda.time.DateTimeZone)">setZone</a></strong>(<a href="../../../org/joda/time/DateTimeZone.html" title="class in org.joda.time">DateTimeZone</a>&nbsp;zone)</code>
<div class="block">Sets the time zone of the datetime, changing the chronology and field values.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritableInstant.html#setZoneRetainFields(org.joda.time.DateTimeZone)">setZoneRetainFields</a></strong>(<a href="../../../org/joda/time/DateTimeZone.html" title="class in org.joda.time">DateTimeZone</a>&nbsp;zone)</code>
<div class="block">Sets the time zone of the datetime, changing the chronology and millisecond.</div>
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<h3>Methods inherited from interface&nbsp;org.joda.time.<a href="../../../org/joda/time/ReadableInstant.html" title="interface in org.joda.time">ReadableInstant</a></h3>
<code><a href="../../../org/joda/time/ReadableInstant.html#equals(java.lang.Object)">equals</a>, <a href="../../../org/joda/time/ReadableInstant.html#get(org.joda.time.DateTimeFieldType)">get</a>, <a href="../../../org/joda/time/ReadableInstant.html#getChronology()">getChronology</a>, <a href="../../../org/joda/time/ReadableInstant.html#getMillis()">getMillis</a>, <a href="../../../org/joda/time/ReadableInstant.html#getZone()">getZone</a>, <a href="../../../org/joda/time/ReadableInstant.html#hashCode()">hashCode</a>, <a href="../../../org/joda/time/ReadableInstant.html#isAfter(org.joda.time.ReadableInstant)">isAfter</a>, <a href="../../../org/joda/time/ReadableInstant.html#isBefore(org.joda.time.ReadableInstant)">isBefore</a>, <a href="../../../org/joda/time/ReadableInstant.html#isEqual(org.joda.time.ReadableInstant)">isEqual</a>, <a href="../../../org/joda/time/ReadableInstant.html#isSupported(org.joda.time.DateTimeFieldType)">isSupported</a>, <a href="../../../org/joda/time/ReadableInstant.html#toInstant()">toInstant</a>, <a href="../../../org/joda/time/ReadableInstant.html#toString()">toString</a></code></li>
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<h3>Methods inherited from interface&nbsp;java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a></h3>
<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Comparable.html?is-external=true#compareTo(T)" title="class or interface in java.lang">compareTo</a></code></li>
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<h3>Method Detail</h3>
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<h4>setMillis</h4>
<pre>void&nbsp;setMillis(long&nbsp;instant)</pre>
<div class="block">Sets the value as the number of milliseconds since
 the epoch, 1970-01-01T00:00:00Z.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>instant</code> - the milliseconds since 1970-01-01T00:00:00Z to set the
 instant to</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if the value is invalid</dd></dl>
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<h4>setMillis</h4>
<pre>void&nbsp;setMillis(<a href="../../../org/joda/time/ReadableInstant.html" title="interface in org.joda.time">ReadableInstant</a>&nbsp;instant)</pre>
<div class="block">Sets the millisecond instant of this instant from another.
 <p>
 This method does not change the chronology of this instant, just the
 millisecond instant.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>instant</code> - the instant to use, null means now</dd></dl>
</li>
</ul>
<a name="setChronology(org.joda.time.Chronology)">
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<h4>setChronology</h4>
<pre>void&nbsp;setChronology(<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a>&nbsp;chronology)</pre>
<div class="block">Sets the chronology of the datetime, which has no effect if not applicable.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>chronology</code> - the chronology to use, null means ISOChronology in default zone</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if the value is invalid</dd></dl>
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<a name="setZone(org.joda.time.DateTimeZone)">
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<h4>setZone</h4>
<pre>void&nbsp;setZone(<a href="../../../org/joda/time/DateTimeZone.html" title="class in org.joda.time">DateTimeZone</a>&nbsp;zone)</pre>
<div class="block">Sets the time zone of the datetime, changing the chronology and field values.
 <p>
 Changing the zone using this method retains the millisecond instant.
 The millisecond instant is adjusted in the new zone to compensate.
 
 chronology. Setting the time zone does not affect the millisecond value
 of this instant.
 <p>
 If the chronology already has this time zone, no change occurs.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>zone</code> - the time zone to use, null means default zone</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/joda/time/ReadWritableInstant.html#setZoneRetainFields(org.joda.time.DateTimeZone)"><code>setZoneRetainFields(org.joda.time.DateTimeZone)</code></a></dd></dl>
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<a name="setZoneRetainFields(org.joda.time.DateTimeZone)">
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<h4>setZoneRetainFields</h4>
<pre>void&nbsp;setZoneRetainFields(<a href="../../../org/joda/time/DateTimeZone.html" title="class in org.joda.time">DateTimeZone</a>&nbsp;zone)</pre>
<div class="block">Sets the time zone of the datetime, changing the chronology and millisecond.
 <p>
 Changing the zone using this method retains the field values.
 The millisecond instant is adjusted in the new zone to compensate.
 <p>
 If the chronology already has this time zone, no change occurs.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>zone</code> - the time zone to use, null means default zone</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/joda/time/ReadWritableInstant.html#setZone(org.joda.time.DateTimeZone)"><code>setZone(org.joda.time.DateTimeZone)</code></a></dd></dl>
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<h4>add</h4>
<pre>void&nbsp;add(long&nbsp;duration)</pre>
<div class="block">Adds a millisecond duration to this instant.
 <p>
 This will typically change the value of ost fields.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>duration</code> - the millis to add</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if the value is invalid</dd></dl>
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<h4>add</h4>
<pre>void&nbsp;add(<a href="../../../org/joda/time/ReadableDuration.html" title="interface in org.joda.time">ReadableDuration</a>&nbsp;duration)</pre>
<div class="block">Adds a duration to this instant.
 <p>
 This will typically change the value of most fields.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>duration</code> - the duration to add, null means add zero</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ArithmeticException.html?is-external=true" title="class or interface in java.lang">ArithmeticException</a></code> - if the result exceeds the capacity of the instant</dd></dl>
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<h4>add</h4>
<pre>void&nbsp;add(<a href="../../../org/joda/time/ReadableDuration.html" title="interface in org.joda.time">ReadableDuration</a>&nbsp;duration,
       int&nbsp;scalar)</pre>
<div class="block">Adds a duration to this instant specifying how many times to add.
 <p>
 This will typically change the value of most fields.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>duration</code> - the duration to add, null means add zero</dd><dd><code>scalar</code> - direction and amount to add, which may be negative</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ArithmeticException.html?is-external=true" title="class or interface in java.lang">ArithmeticException</a></code> - if the result exceeds the capacity of the instant</dd></dl>
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<h4>add</h4>
<pre>void&nbsp;add(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a>&nbsp;period)</pre>
<div class="block">Adds a period to this instant.
 <p>
 This will typically change the value of most fields.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>period</code> - the period to add, null means add zero</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ArithmeticException.html?is-external=true" title="class or interface in java.lang">ArithmeticException</a></code> - if the result exceeds the capacity of the instant</dd></dl>
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<pre>void&nbsp;add(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a>&nbsp;period,
       int&nbsp;scalar)</pre>
<div class="block">Adds a period to this instant specifying how many times to add.
 <p>
 This will typically change the value of most fields.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>period</code> - the period to add, null means add zero</dd><dd><code>scalar</code> - direction and amount to add, which may be negative</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ArithmeticException.html?is-external=true" title="class or interface in java.lang">ArithmeticException</a></code> - if the result exceeds the capacity of the instant</dd></dl>
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<pre>void&nbsp;set(<a href="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</a>&nbsp;type,
       int&nbsp;value)</pre>
<div class="block">Sets the value of one of the fields of the instant, such as hourOfDay.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>type</code> - a field type, usually obtained from DateTimeFieldType, null ignored</dd><dd><code>value</code> - the value to set the field to</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if the value is invalid</dd></dl>
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<pre>void&nbsp;add(<a href="../../../org/joda/time/DurationFieldType.html" title="class in org.joda.time">DurationFieldType</a>&nbsp;type,
       int&nbsp;amount)</pre>
<div class="block">Adds to the instant specifying the duration and multiple to add.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>type</code> - a field type, usually obtained from DateTimeFieldType, null ignored</dd><dd><code>amount</code> - the amount to add of this duration</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ArithmeticException.html?is-external=true" title="class or interface in java.lang">ArithmeticException</a></code> - if the result exceeds the capacity of the instant</dd></dl>
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