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<div class="subTitle">org.joda.time</div>
<h2 title="Interface ReadWritablePeriod" class="title">Interface ReadWritablePeriod</h2>
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<dt>All Superinterfaces:</dt>
<dd><a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a></dd>
</dl>
<dl>
<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../org/joda/time/MutablePeriod.html" title="class in org.joda.time">MutablePeriod</a></dd>
</dl>
<hr>
<br>
<pre>public interface <span class="strong">ReadWritablePeriod</span>
extends <a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a></pre>
<div class="block">Defines a duration of time that can be queried and modified using datetime fields.
 <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>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<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/ReadWritablePeriod.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;field,
   int&nbsp;value)</code>
<div class="block">Adds to the value of one of the fields.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#add(int,%20int,%20int,%20int,%20int,%20int,%20int,%20int)">add</a></strong>(int&nbsp;years,
   int&nbsp;months,
   int&nbsp;weeks,
   int&nbsp;days,
   int&nbsp;hours,
   int&nbsp;minutes,
   int&nbsp;seconds,
   int&nbsp;millis)</code>
<div class="block">Adds to each field of this period.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#add(org.joda.time.ReadableInterval)">add</a></strong>(<a href="../../../org/joda/time/ReadableInterval.html" title="interface in org.joda.time">ReadableInterval</a>&nbsp;interval)</code>
<div class="block">Adds an interval to this one by dividing the interval into
 fields and then adding each field in turn.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.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 one by adding each field in turn.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#addDays(int)">addDays</a></strong>(int&nbsp;days)</code>
<div class="block">Adds the specified days to the number of days in the period.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#addHours(int)">addHours</a></strong>(int&nbsp;hours)</code>
<div class="block">Adds the specified hours to the number of hours in the period.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#addMillis(int)">addMillis</a></strong>(int&nbsp;millis)</code>
<div class="block">Adds the specified millis to the number of millis in the period.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#addMinutes(int)">addMinutes</a></strong>(int&nbsp;minutes)</code>
<div class="block">Adds the specified minutes to the number of minutes in the period.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#addMonths(int)">addMonths</a></strong>(int&nbsp;months)</code>
<div class="block">Adds the specified months to the number of months in the period.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#addSeconds(int)">addSeconds</a></strong>(int&nbsp;seconds)</code>
<div class="block">Adds the specified seconds to the number of seconds in the period.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#addWeeks(int)">addWeeks</a></strong>(int&nbsp;weeks)</code>
<div class="block">Adds the specified weeks to the number of weeks in the period.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#addYears(int)">addYears</a></strong>(int&nbsp;years)</code>
<div class="block">Adds the specified years to the number of years in the period.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#clear()">clear</a></strong>()</code>
<div class="block">Clears the period, setting all values back to zero.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#set(org.joda.time.DurationFieldType,%20int)">set</a></strong>(<a href="../../../org/joda/time/DurationFieldType.html" title="class in org.joda.time">DurationFieldType</a>&nbsp;field,
   int&nbsp;value)</code>
<div class="block">Sets the value of one of the fields.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setDays(int)">setDays</a></strong>(int&nbsp;days)</code>
<div class="block">Sets the number of days of the period.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setHours(int)">setHours</a></strong>(int&nbsp;hours)</code>
<div class="block">Sets the number of hours of the period.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setMillis(int)">setMillis</a></strong>(int&nbsp;millis)</code>
<div class="block">Sets the number of millis of the period.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setMinutes(int)">setMinutes</a></strong>(int&nbsp;minutes)</code>
<div class="block">Sets the number of minutes of the period.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setMonths(int)">setMonths</a></strong>(int&nbsp;months)</code>
<div class="block">Sets the number of months of the period.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setPeriod(int,%20int,%20int,%20int,%20int,%20int,%20int,%20int)">setPeriod</a></strong>(int&nbsp;years,
         int&nbsp;months,
         int&nbsp;weeks,
         int&nbsp;days,
         int&nbsp;hours,
         int&nbsp;minutes,
         int&nbsp;seconds,
         int&nbsp;millis)</code>
<div class="block">Sets all the fields in one go.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setPeriod(org.joda.time.ReadableInterval)">setPeriod</a></strong>(<a href="../../../org/joda/time/ReadableInterval.html" title="interface in org.joda.time">ReadableInterval</a>&nbsp;interval)</code>
<div class="block">Sets all the fields in one go from an interval dividing the
 fields using the period type.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setPeriod(org.joda.time.ReadablePeriod)">setPeriod</a></strong>(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a>&nbsp;period)</code>
<div class="block">Sets all the fields in one go from another ReadablePeriod.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setSeconds(int)">setSeconds</a></strong>(int&nbsp;seconds)</code>
<div class="block">Sets the number of seconds of the period.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setValue(int,%20int)">setValue</a></strong>(int&nbsp;index,
        int&nbsp;value)</code>
<div class="block">Sets the value of one of the fields by index.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setWeeks(int)">setWeeks</a></strong>(int&nbsp;weeks)</code>
<div class="block">Sets the number of weeks of the period.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/ReadWritablePeriod.html#setYears(int)">setYears</a></strong>(int&nbsp;years)</code>
<div class="block">Sets the number of years of the period.</div>
</td>
</tr>
</table>
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<h3>Methods inherited from interface&nbsp;org.joda.time.<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a></h3>
<code><a href="../../../org/joda/time/ReadablePeriod.html#equals(java.lang.Object)">equals</a>, <a href="../../../org/joda/time/ReadablePeriod.html#get(org.joda.time.DurationFieldType)">get</a>, <a href="../../../org/joda/time/ReadablePeriod.html#getFieldType(int)">getFieldType</a>, <a href="../../../org/joda/time/ReadablePeriod.html#getPeriodType()">getPeriodType</a>, <a href="../../../org/joda/time/ReadablePeriod.html#getValue(int)">getValue</a>, <a href="../../../org/joda/time/ReadablePeriod.html#hashCode()">hashCode</a>, <a href="../../../org/joda/time/ReadablePeriod.html#isSupported(org.joda.time.DurationFieldType)">isSupported</a>, <a href="../../../org/joda/time/ReadablePeriod.html#size()">size</a>, <a href="../../../org/joda/time/ReadablePeriod.html#toMutablePeriod()">toMutablePeriod</a>, <a href="../../../org/joda/time/ReadablePeriod.html#toPeriod()">toPeriod</a>, <a href="../../../org/joda/time/ReadablePeriod.html#toString()">toString</a></code></li>
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<h4>clear</h4>
<pre>void&nbsp;clear()</pre>
<div class="block">Clears the period, setting all values back to zero.</div>
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<h4>setValue</h4>
<pre>void&nbsp;setValue(int&nbsp;index,
            int&nbsp;value)</pre>
<div class="block">Sets the value of one of the fields by index.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>index</code> - the field index</dd><dd><code>value</code> - the new value for the field</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - if the index is invalid</dd></dl>
</li>
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<pre>void&nbsp;set(<a href="../../../org/joda/time/DurationFieldType.html" title="class in org.joda.time">DurationFieldType</a>&nbsp;field,
       int&nbsp;value)</pre>
<div class="block">Sets the value of one of the fields.
 <p>
 The field type specified must be one of those that is supported by the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>field</code> - a DurationFieldType instance that is supported by this period</dd><dd><code>value</code> - the new value for the field</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 field is null or not supported</dd></dl>
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<pre>void&nbsp;setPeriod(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a>&nbsp;period)</pre>
<div class="block">Sets all the fields in one go from another ReadablePeriod.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>period</code> - the period to set, null means zero length period</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 an unsupported field's value is non-zero</dd></dl>
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</ul>
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<h4>setPeriod</h4>
<pre>void&nbsp;setPeriod(int&nbsp;years,
             int&nbsp;months,
             int&nbsp;weeks,
             int&nbsp;days,
             int&nbsp;hours,
             int&nbsp;minutes,
             int&nbsp;seconds,
             int&nbsp;millis)</pre>
<div class="block">Sets all the fields in one go.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>years</code> - amount of years in this period, which must be zero if unsupported</dd><dd><code>months</code> - amount of months in this period, which must be zero if unsupported</dd><dd><code>weeks</code> - amount of weeks in this period, which must be zero if unsupported</dd><dd><code>days</code> - amount of days in this period, which must be zero if unsupported</dd><dd><code>hours</code> - amount of hours in this period, which must be zero if unsupported</dd><dd><code>minutes</code> - amount of minutes in this period, which must be zero if unsupported</dd><dd><code>seconds</code> - amount of seconds in this period, which must be zero if unsupported</dd><dd><code>millis</code> - amount of milliseconds in this period, which must be zero if unsupported</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 an unsupported field's value is non-zero</dd></dl>
</li>
</ul>
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<h4>setPeriod</h4>
<pre>void&nbsp;setPeriod(<a href="../../../org/joda/time/ReadableInterval.html" title="interface in org.joda.time">ReadableInterval</a>&nbsp;interval)</pre>
<div class="block">Sets all the fields in one go from an interval dividing the
 fields using the period type.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>interval</code> - the interval to set, null means zero length</dd></dl>
</li>
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<h4>add</h4>
<pre>void&nbsp;add(<a href="../../../org/joda/time/DurationFieldType.html" title="class in org.joda.time">DurationFieldType</a>&nbsp;field,
       int&nbsp;value)</pre>
<div class="block">Adds to the value of one of the fields.
 <p>
 The field type specified must be one of those that is supported by the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>field</code> - a DurationFieldType instance that is supported by this period</dd><dd><code>value</code> - the value to add to the field</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 field is null or not supported</dd></dl>
</li>
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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 one by adding each field in turn.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>period</code> - the period to add, null means add nothing</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 period being added contains a field
 not supported by this period</dd>
<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 addition exceeds the capacity of the period</dd></dl>
</li>
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<h4>add</h4>
<pre>void&nbsp;add(int&nbsp;years,
       int&nbsp;months,
       int&nbsp;weeks,
       int&nbsp;days,
       int&nbsp;hours,
       int&nbsp;minutes,
       int&nbsp;seconds,
       int&nbsp;millis)</pre>
<div class="block">Adds to each field of this period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>years</code> - amount of years to add to this period, which must be zero if unsupported</dd><dd><code>months</code> - amount of months to add to this period, which must be zero if unsupported</dd><dd><code>weeks</code> - amount of weeks to add to this period, which must be zero if unsupported</dd><dd><code>days</code> - amount of days to add to this period, which must be zero if unsupported</dd><dd><code>hours</code> - amount of hours to add to this period, which must be zero if unsupported</dd><dd><code>minutes</code> - amount of minutes to add to this period, which must be zero if unsupported</dd><dd><code>seconds</code> - amount of seconds to add to this period, which must be zero if unsupported</dd><dd><code>millis</code> - amount of milliseconds to add to this period, which must be zero if unsupported</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 period being added contains a field
 not supported by this period</dd>
<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 addition exceeds the capacity of the period</dd></dl>
</li>
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<h4>add</h4>
<pre>void&nbsp;add(<a href="../../../org/joda/time/ReadableInterval.html" title="interface in org.joda.time">ReadableInterval</a>&nbsp;interval)</pre>
<div class="block">Adds an interval to this one by dividing the interval into
 fields and then adding each field in turn.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>interval</code> - the interval to add, null means add nothing</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 addition exceeds the capacity of the period</dd></dl>
</li>
</ul>
<a name="setYears(int)">
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<h4>setYears</h4>
<pre>void&nbsp;setYears(int&nbsp;years)</pre>
<div class="block">Sets the number of years of the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>years</code> - the number of years</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 field is not supported and the value is non-zero</dd></dl>
</li>
</ul>
<a name="addYears(int)">
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<h4>addYears</h4>
<pre>void&nbsp;addYears(int&nbsp;years)</pre>
<div class="block">Adds the specified years to the number of years in the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>years</code> - the number of years</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 field is not supported and the value is non-zero</dd>
<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 addition exceeds the capacity of the period</dd></dl>
</li>
</ul>
<a name="setMonths(int)">
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<li class="blockList">
<h4>setMonths</h4>
<pre>void&nbsp;setMonths(int&nbsp;months)</pre>
<div class="block">Sets the number of months of the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>months</code> - the number of months</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 field is not supported and the value is non-zero</dd></dl>
</li>
</ul>
<a name="addMonths(int)">
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<h4>addMonths</h4>
<pre>void&nbsp;addMonths(int&nbsp;months)</pre>
<div class="block">Adds the specified months to the number of months in the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>months</code> - the number of months</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 field is not supported and the value is non-zero</dd>
<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 addition exceeds the capacity of the period</dd></dl>
</li>
</ul>
<a name="setWeeks(int)">
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<li class="blockList">
<h4>setWeeks</h4>
<pre>void&nbsp;setWeeks(int&nbsp;weeks)</pre>
<div class="block">Sets the number of weeks of the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>weeks</code> - the number of weeks</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 field is not supported and the value is non-zero</dd></dl>
</li>
</ul>
<a name="addWeeks(int)">
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<h4>addWeeks</h4>
<pre>void&nbsp;addWeeks(int&nbsp;weeks)</pre>
<div class="block">Adds the specified weeks to the number of weeks in the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>weeks</code> - the number of weeks</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 field is not supported and the value is non-zero</dd>
<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 addition exceeds the capacity of the period</dd></dl>
</li>
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<a name="setDays(int)">
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<h4>setDays</h4>
<pre>void&nbsp;setDays(int&nbsp;days)</pre>
<div class="block">Sets the number of days of the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>days</code> - the number of days</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 field is not supported and the value is non-zero</dd></dl>
</li>
</ul>
<a name="addDays(int)">
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<h4>addDays</h4>
<pre>void&nbsp;addDays(int&nbsp;days)</pre>
<div class="block">Adds the specified days to the number of days in the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>days</code> - the number of days</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 field is not supported and the value is non-zero</dd>
<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 addition exceeds the capacity of the period</dd></dl>
</li>
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<a name="setHours(int)">
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<h4>setHours</h4>
<pre>void&nbsp;setHours(int&nbsp;hours)</pre>
<div class="block">Sets the number of hours of the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>hours</code> - the number of hours</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 field is not supported and the value is non-zero</dd></dl>
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<h4>addHours</h4>
<pre>void&nbsp;addHours(int&nbsp;hours)</pre>
<div class="block">Adds the specified hours to the number of hours in the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>hours</code> - the number of hours</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 field is not supported and the value is non-zero</dd>
<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 addition exceeds the capacity of the period</dd></dl>
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<a name="setMinutes(int)">
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<h4>setMinutes</h4>
<pre>void&nbsp;setMinutes(int&nbsp;minutes)</pre>
<div class="block">Sets the number of minutes of the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>minutes</code> - the number of minutes</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 field is not supported and the value is non-zero</dd></dl>
</li>
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<h4>addMinutes</h4>
<pre>void&nbsp;addMinutes(int&nbsp;minutes)</pre>
<div class="block">Adds the specified minutes to the number of minutes in the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>minutes</code> - the number of minutes</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 field is not supported and the value is non-zero</dd>
<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 addition exceeds the capacity of the period</dd></dl>
</li>
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<h4>setSeconds</h4>
<pre>void&nbsp;setSeconds(int&nbsp;seconds)</pre>
<div class="block">Sets the number of seconds of the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>seconds</code> - the number of seconds</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 field is not supported and the value is non-zero</dd></dl>
</li>
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<h4>addSeconds</h4>
<pre>void&nbsp;addSeconds(int&nbsp;seconds)</pre>
<div class="block">Adds the specified seconds to the number of seconds in the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>seconds</code> - the number of seconds</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 field is not supported and the value is non-zero</dd>
<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 addition exceeds the capacity of the period</dd></dl>
</li>
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<h4>setMillis</h4>
<pre>void&nbsp;setMillis(int&nbsp;millis)</pre>
<div class="block">Sets the number of millis of the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>millis</code> - the number of millis</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 field is not supported and the value is non-zero</dd></dl>
</li>
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<h4>addMillis</h4>
<pre>void&nbsp;addMillis(int&nbsp;millis)</pre>
<div class="block">Adds the specified millis to the number of millis in the period.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>millis</code> - the number of millis</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 field is not supported and the value is non-zero</dd>
<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 addition exceeds the capacity of the period</dd></dl>
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