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<div class="subTitle">org.joda.time</div>
<h2 title="Class YearMonth" class="title">Class YearMonth</h2>
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<li><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<li><a href="../../../org/joda/time/base/AbstractPartial.html" title="class in org.joda.time.base">org.joda.time.base.AbstractPartial</a></li>
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<li><a href="../../../org/joda/time/base/BasePartial.html" title="class in org.joda.time.base">org.joda.time.base.BasePartial</a></li>
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<ul class="inheritance">
<li>org.joda.time.YearMonth</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <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><<a href="../../../org/joda/time/ReadablePartial.html" title="interface in org.joda.time">ReadablePartial</a>>, <a href="../../../org/joda/time/ReadablePartial.html" title="interface in org.joda.time">ReadablePartial</a></dd>
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<pre>public final class <span class="strong">YearMonth</span>
extends <a href="../../../org/joda/time/base/BasePartial.html" title="class in org.joda.time.base">BasePartial</a>
implements <a href="../../../org/joda/time/ReadablePartial.html" title="interface in org.joda.time">ReadablePartial</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></pre>
<div class="block">YearMonth is an immutable partial supporting the year and monthOfYear fields.
<p>
NOTE: This class only supports the two fields listed above.
It is impossible to query any other fields, such as dayOfWeek or centuryOfEra.
<p>
Calculations on YearMonth are performed using a <a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time"><code>Chronology</code></a>.
This chronology is set to be in the UTC time zone for all calculations.
<p>
One use case for this class is to store a credit card expiry date, as that only
references the year and month.
This class can be used as the gYearMonth type in XML Schema.
<p>
Each individual field can be queried in two ways:
<ul>
<li><code>getMonthOfYear()</code>
<li><code>monthOfYear().get()</code>
</ul>
The second technique also provides access to other useful methods on the
field:
<ul>
<li>numeric value - <code>monthOfYear().get()</code>
<li>text value - <code>monthOfYear().getAsText()</code>
<li>short text value - <code>monthOfYear().getAsShortText()</code>
<li>maximum/minimum values - <code>monthOfYear().getMaximumValue()</code>
<li>add/subtract - <code>monthOfYear().addToCopy()</code>
<li>set - <code>monthOfYear().setCopy()</code>
</ul>
<p>
YearMonth is thread-safe and immutable, provided that the Chronology is as well.
All standard Chronology classes supplied are thread-safe and immutable.</div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>2.0</dd>
<dt><span class="strong">See Also:</span></dt><dd><a href="../../../serialized-form.html#org.joda.time.YearMonth">Serialized Form</a></dd></dl>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static class </code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.Property.html" title="class in org.joda.time">YearMonth.Property</a></strong></code>
<div class="block">The property class for <code>YearMonth</code>.</div>
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<h3>Field Summary</h3>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#MONTH_OF_YEAR">MONTH_OF_YEAR</a></strong></code>
<div class="block">The index of the monthOfYear field in the field array</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#YEAR">YEAR</a></strong></code>
<div class="block">The index of the year field in the field array</div>
</td>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../org/joda/time/YearMonth.html#YearMonth()">YearMonth</a></strong>()</code>
<div class="block">Constructs a YearMonth with the current year-month, using ISOChronology in
the default zone to extract the fields.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../org/joda/time/YearMonth.html#YearMonth(org.joda.time.Chronology)">YearMonth</a></strong>(<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chronology)</code>
<div class="block">Constructs a YearMonth with the current year-month, using the specified chronology
and zone to extract the fields.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../org/joda/time/YearMonth.html#YearMonth(org.joda.time.DateTimeZone)">YearMonth</a></strong>(<a href="../../../org/joda/time/DateTimeZone.html" title="class in org.joda.time">DateTimeZone</a> zone)</code>
<div class="block">Constructs a YearMonth with the current year-month, using ISOChronology in
the specified zone to extract the fields.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../org/joda/time/YearMonth.html#YearMonth(int,%20int)">YearMonth</a></strong>(int year,
int monthOfYear)</code>
<div class="block">Constructs a YearMonth with specified year and month
using <code>ISOChronology</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../org/joda/time/YearMonth.html#YearMonth(int,%20int,%20org.joda.time.Chronology)">YearMonth</a></strong>(int year,
int monthOfYear,
<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chronology)</code>
<div class="block">Constructs an instance set to the specified year and month
using the specified chronology, whose zone is ignored.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../org/joda/time/YearMonth.html#YearMonth(long)">YearMonth</a></strong>(long instant)</code>
<div class="block">Constructs a YearMonth extracting the partial fields from the specified
milliseconds using the ISOChronology in the default zone.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../org/joda/time/YearMonth.html#YearMonth(long,%20org.joda.time.Chronology)">YearMonth</a></strong>(long instant,
<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chronology)</code>
<div class="block">Constructs a YearMonth extracting the partial fields from the specified
milliseconds using the chronology provided.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../org/joda/time/YearMonth.html#YearMonth(java.lang.Object)">YearMonth</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> instant)</code>
<div class="block">Constructs a YearMonth from an Object that represents some form of time.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../org/joda/time/YearMonth.html#YearMonth(java.lang.Object,%20org.joda.time.Chronology)">YearMonth</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> instant,
<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chronology)</code>
<div class="block">Constructs a YearMonth from an Object that represents some form of time,
using the specified chronology.</div>
</td>
</tr>
</table>
</li>
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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"> </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>static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#fromCalendarFields(java.util.Calendar)">fromCalendarFields</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html?is-external=true" title="class or interface in java.util">Calendar</a> calendar)</code>
<div class="block">Constructs a YearMonth from a <code>java.util.Calendar</code>
using exactly the same field values avoiding any time zone effects.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#fromDateFields(java.util.Date)">fromDateFields</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a> date)</code>
<div class="block">Constructs a YearMonth from a <code>java.util.Date</code>
using exactly the same field values avoiding any time zone effects.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../org/joda/time/DateTimeField.html" title="class in org.joda.time">DateTimeField</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#getField(int,%20org.joda.time.Chronology)">getField</a></strong>(int index,
<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chrono)</code>
<div class="block">Gets the field for a specific index in the chronology specified.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#getFieldType(int)">getFieldType</a></strong>(int index)</code>
<div class="block">Gets the field type at the specified index.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</a>[]</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#getFieldTypes()">getFieldTypes</a></strong>()</code>
<div class="block">Gets an array of the field type of each of the fields that this partial supports.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#getMonthOfYear()">getMonthOfYear</a></strong>()</code>
<div class="block">Get the month of year field value.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#getYear()">getYear</a></strong>()</code>
<div class="block">Get the year field value.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#minus(org.joda.time.ReadablePeriod)">minus</a></strong>(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a> period)</code>
<div class="block">Returns a copy of this year-month with the specified period taken away.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#minusMonths(int)">minusMonths</a></strong>(int months)</code>
<div class="block">Returns a copy of this year-month minus the specified number of months.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#minusYears(int)">minusYears</a></strong>(int years)</code>
<div class="block">Returns a copy of this year-month minus the specified number of years.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.Property.html" title="class in org.joda.time">YearMonth.Property</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#monthOfYear()">monthOfYear</a></strong>()</code>
<div class="block">Get the month of year field property which provides access to advanced functionality.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#now()">now</a></strong>()</code>
<div class="block">Obtains a <code>YearMonth</code> set to the current system millisecond time
using <code>ISOChronology</code> in the default time zone.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#now(org.joda.time.Chronology)">now</a></strong>(<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chronology)</code>
<div class="block">Obtains a <code>YearMonth</code> set to the current system millisecond time
using the specified chronology.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#now(org.joda.time.DateTimeZone)">now</a></strong>(<a href="../../../org/joda/time/DateTimeZone.html" title="class in org.joda.time">DateTimeZone</a> zone)</code>
<div class="block">Obtains a <code>YearMonth</code> set to the current system millisecond time
using <code>ISOChronology</code> in the specified time zone.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#parse(java.lang.String)">parse</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> str)</code>
<div class="block">Parses a <code>YearMonth</code> from the specified string.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#parse(java.lang.String,%20org.joda.time.format.DateTimeFormatter)">parse</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> str,
<a href="../../../org/joda/time/format/DateTimeFormatter.html" title="class in org.joda.time.format">DateTimeFormatter</a> formatter)</code>
<div class="block">Parses a <code>YearMonth</code> from the specified string using a formatter.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#plus(org.joda.time.ReadablePeriod)">plus</a></strong>(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a> period)</code>
<div class="block">Returns a copy of this year-month with the specified period added.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#plusMonths(int)">plusMonths</a></strong>(int months)</code>
<div class="block">Returns a copy of this year-month plus the specified number of months.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#plusYears(int)">plusYears</a></strong>(int years)</code>
<div class="block">Returns a copy of this year-month plus the specified number of years.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.Property.html" title="class in org.joda.time">YearMonth.Property</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#property(org.joda.time.DateTimeFieldType)">property</a></strong>(<a href="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</a> type)</code>
<div class="block">Gets the property object for the specified type, which contains
many useful methods.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#size()">size</a></strong>()</code>
<div class="block">Gets the number of fields in this partial, which is two.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/Interval.html" title="class in org.joda.time">Interval</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#toInterval()">toInterval</a></strong>()</code>
<div class="block">Converts this object to an Interval representing the whole month.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/joda/time/Interval.html" title="class in org.joda.time">Interval</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#toInterval(org.joda.time.DateTimeZone)">toInterval</a></strong>(<a href="../../../org/joda/time/DateTimeZone.html" title="class in org.joda.time">DateTimeZone</a> zone)</code>
<div class="block">Converts this object to an Interval representing the whole month.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/LocalDate.html" title="class in org.joda.time">LocalDate</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#toLocalDate(int)">toLocalDate</a></strong>(int dayOfMonth)</code>
<div class="block">Converts this object to a LocalDate with the same year-month and chronology.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#toString()">toString</a></strong>()</code>
<div class="block">Output the year-month in ISO8601 format (yyyy-MM).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#toString(java.lang.String)">toString</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> pattern)</code>
<div class="block">Output the year-month using the specified format pattern.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#toString(java.lang.String,%20java.util.Locale)">toString</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> pattern,
<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Locale.html?is-external=true" title="class or interface in java.util">Locale</a> locale)</code>
<div class="block">Output the year-month using the specified format pattern.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#withChronologyRetainFields(org.joda.time.Chronology)">withChronologyRetainFields</a></strong>(<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> newChronology)</code>
<div class="block">Returns a copy of this year-month with the specified chronology.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#withField(org.joda.time.DateTimeFieldType,%20int)">withField</a></strong>(<a href="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</a> fieldType,
int value)</code>
<div class="block">Returns a copy of this year-month with the specified field set to a new value.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#withFieldAdded(org.joda.time.DurationFieldType,%20int)">withFieldAdded</a></strong>(<a href="../../../org/joda/time/DurationFieldType.html" title="class in org.joda.time">DurationFieldType</a> fieldType,
int amount)</code>
<div class="block">Returns a copy of this year-month with the value of the specified field increased.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#withMonthOfYear(int)">withMonthOfYear</a></strong>(int monthOfYear)</code>
<div class="block">Returns a copy of this year-month with the month of year field updated.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#withPeriodAdded(org.joda.time.ReadablePeriod,%20int)">withPeriodAdded</a></strong>(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a> period,
int scalar)</code>
<div class="block">Returns a copy of this year-month with the specified period added.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#withYear(int)">withYear</a></strong>(int year)</code>
<div class="block">Returns a copy of this year-month with the year field updated.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/joda/time/YearMonth.Property.html" title="class in org.joda.time">YearMonth.Property</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/joda/time/YearMonth.html#year()">year</a></strong>()</code>
<div class="block">Get the year field property which provides access to advanced functionality.</div>
</td>
</tr>
</table>
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<h3>Methods inherited from class org.joda.time.base.<a href="../../../org/joda/time/base/BasePartial.html" title="class in org.joda.time.base">BasePartial</a></h3>
<code><a href="../../../org/joda/time/base/BasePartial.html#getChronology()">getChronology</a>, <a href="../../../org/joda/time/base/BasePartial.html#getValue(int)">getValue</a>, <a href="../../../org/joda/time/base/BasePartial.html#getValues()">getValues</a>, <a href="../../../org/joda/time/base/BasePartial.html#setValue(int,%20int)">setValue</a>, <a href="../../../org/joda/time/base/BasePartial.html#setValues(int[])">setValues</a></code></li>
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<ul class="blockList">
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<h3>Methods inherited from class org.joda.time.base.<a href="../../../org/joda/time/base/AbstractPartial.html" title="class in org.joda.time.base">AbstractPartial</a></h3>
<code><a href="../../../org/joda/time/base/AbstractPartial.html#compareTo(org.joda.time.ReadablePartial)">compareTo</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#equals(java.lang.Object)">equals</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#get(org.joda.time.DateTimeFieldType)">get</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#getField(int)">getField</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#getFields()">getFields</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#hashCode()">hashCode</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#indexOf(org.joda.time.DateTimeFieldType)">indexOf</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#indexOf(org.joda.time.DurationFieldType)">indexOf</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#indexOfSupported(org.joda.time.DateTimeFieldType)">indexOfSupported</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#indexOfSupported(org.joda.time.DurationFieldType)">indexOfSupported</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#isAfter(org.joda.time.ReadablePartial)">isAfter</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#isBefore(org.joda.time.ReadablePartial)">isBefore</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#isEqual(org.joda.time.ReadablePartial)">isEqual</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#isSupported(org.joda.time.DateTimeFieldType)">isSupported</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#toDateTime(org.joda.time.ReadableInstant)">toDateTime</a>, <a href="../../../org/joda/time/base/AbstractPartial.html#toString(org.joda.time.format.DateTimeFormatter)">toString</a></code></li>
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<h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</a></code></li>
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<h3>Methods inherited from interface org.joda.time.<a href="../../../org/joda/time/ReadablePartial.html" title="interface in org.joda.time">ReadablePartial</a></h3>
<code><a href="../../../org/joda/time/ReadablePartial.html#equals(java.lang.Object)">equals</a>, <a href="../../../org/joda/time/ReadablePartial.html#get(org.joda.time.DateTimeFieldType)">get</a>, <a href="../../../org/joda/time/ReadablePartial.html#getChronology()">getChronology</a>, <a href="../../../org/joda/time/ReadablePartial.html#getField(int)">getField</a>, <a href="../../../org/joda/time/ReadablePartial.html#getValue(int)">getValue</a>, <a href="../../../org/joda/time/ReadablePartial.html#hashCode()">hashCode</a>, <a href="../../../org/joda/time/ReadablePartial.html#isSupported(org.joda.time.DateTimeFieldType)">isSupported</a>, <a href="../../../org/joda/time/ReadablePartial.html#toDateTime(org.joda.time.ReadableInstant)">toDateTime</a></code></li>
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<h3>Methods inherited from interface 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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<div class="details">
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<li class="blockList">
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<li class="blockList"><a name="field_detail">
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<h3>Field Detail</h3>
<a name="YEAR">
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<h4>YEAR</h4>
<pre>public static final int YEAR</pre>
<div class="block">The index of the year field in the field array</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant-values.html#org.joda.time.YearMonth.YEAR">Constant Field Values</a></dd></dl>
</li>
</ul>
<a name="MONTH_OF_YEAR">
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<h4>MONTH_OF_YEAR</h4>
<pre>public static final int MONTH_OF_YEAR</pre>
<div class="block">The index of the monthOfYear field in the field array</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant-values.html#org.joda.time.YearMonth.MONTH_OF_YEAR">Constant Field Values</a></dd></dl>
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<h3>Constructor Detail</h3>
<a name="YearMonth()">
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<h4>YearMonth</h4>
<pre>public YearMonth()</pre>
<div class="block">Constructs a YearMonth with the current year-month, using ISOChronology in
the default zone to extract the fields.
<p>
The constructor uses the default time zone, resulting in the local time
being initialised. Once the constructor is complete, all further calculations
are performed without reference to a time-zone (by switching to UTC).</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/joda/time/YearMonth.html#now()"><code>now()</code></a></dd></dl>
</li>
</ul>
<a name="YearMonth(org.joda.time.DateTimeZone)">
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<h4>YearMonth</h4>
<pre>public YearMonth(<a href="../../../org/joda/time/DateTimeZone.html" title="class in org.joda.time">DateTimeZone</a> zone)</pre>
<div class="block">Constructs a YearMonth with the current year-month, using ISOChronology in
the specified zone to extract the fields.
<p>
The constructor uses the specified time zone to obtain the current year-month.
Once the constructor is complete, all further calculations
are performed without reference to a time-zone (by switching to UTC).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>zone</code> - the zone to use, null means default zone</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/joda/time/YearMonth.html#now(org.joda.time.DateTimeZone)"><code>now(DateTimeZone)</code></a></dd></dl>
</li>
</ul>
<a name="YearMonth(org.joda.time.Chronology)">
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<h4>YearMonth</h4>
<pre>public YearMonth(<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chronology)</pre>
<div class="block">Constructs a YearMonth with the current year-month, using the specified chronology
and zone to extract the fields.
<p>
The constructor uses the time zone of the chronology specified.
Once the constructor is complete, all further calculations are performed
without reference to a time-zone (by switching to UTC).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>chronology</code> - the chronology, null means ISOChronology in the default zone</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/joda/time/YearMonth.html#now(org.joda.time.Chronology)"><code>now(Chronology)</code></a></dd></dl>
</li>
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<a name="YearMonth(long)">
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<h4>YearMonth</h4>
<pre>public YearMonth(long instant)</pre>
<div class="block">Constructs a YearMonth extracting the partial fields from the specified
milliseconds using the ISOChronology in the default zone.
<p>
The constructor uses the default time zone, resulting in the local time
being initialised. Once the constructor is complete, all further calculations
are performed without reference to a time-zone (by switching to UTC).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>instant</code> - the milliseconds from 1970-01-01T00:00:00Z</dd></dl>
</li>
</ul>
<a name="YearMonth(long, org.joda.time.Chronology)">
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<h4>YearMonth</h4>
<pre>public YearMonth(long instant,
<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chronology)</pre>
<div class="block">Constructs a YearMonth extracting the partial fields from the specified
milliseconds using the chronology provided.
<p>
The constructor uses the time zone of the chronology specified.
Once the constructor is complete, all further calculations are performed
without reference to a time-zone (by switching to UTC).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>instant</code> - the milliseconds from 1970-01-01T00:00:00Z</dd><dd><code>chronology</code> - the chronology, null means ISOChronology in the default zone</dd></dl>
</li>
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<a name="YearMonth(java.lang.Object)">
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<h4>YearMonth</h4>
<pre>public YearMonth(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> instant)</pre>
<div class="block">Constructs a YearMonth from an Object that represents some form of time.
<p>
The recognised object types are defined in
<a href="../../../org/joda/time/convert/ConverterManager.html" title="class in org.joda.time.convert"><code>ConverterManager</code></a> and
include ReadableInstant, String, Calendar and Date.
The String formats are described by <a href="../../../org/joda/time/format/ISODateTimeFormat.html#localDateParser()"><code>ISODateTimeFormat.localDateParser()</code></a>.
<p>
The chronology used will be derived from the object, defaulting to ISO.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>instant</code> - the date-time object, null means now</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 instant is invalid</dd></dl>
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<pre>public YearMonth(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> instant,
<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chronology)</pre>
<div class="block">Constructs a YearMonth from an Object that represents some form of time,
using the specified chronology.
<p>
The recognised object types are defined in
<a href="../../../org/joda/time/convert/ConverterManager.html" title="class in org.joda.time.convert"><code>ConverterManager</code></a> and
include ReadableInstant, String, Calendar and Date.
The String formats are described by <a href="../../../org/joda/time/format/ISODateTimeFormat.html#localDateParser()"><code>ISODateTimeFormat.localDateParser()</code></a>.
<p>
The constructor uses the time zone of the chronology specified.
Once the constructor is complete, all further calculations are performed
without reference to a time-zone (by switching to UTC).
The specified chronology overrides that of the object.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>instant</code> - the date-time object, null means now</dd><dd><code>chronology</code> - the chronology, null means ISO default</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 instant is invalid</dd></dl>
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<pre>public YearMonth(int year,
int monthOfYear)</pre>
<div class="block">Constructs a YearMonth with specified year and month
using <code>ISOChronology</code>.
<p>
The constructor uses the no time zone initialising the fields as provided.
Once the constructor is complete, all further calculations
are performed without reference to a time-zone (by switching to UTC).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>year</code> - the year</dd><dd><code>monthOfYear</code> - the month of the year</dd></dl>
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<pre>public YearMonth(int year,
int monthOfYear,
<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chronology)</pre>
<div class="block">Constructs an instance set to the specified year and month
using the specified chronology, whose zone is ignored.
<p>
If the chronology is null, <code>ISOChronology</code> is used.
<p>
The constructor uses the time zone of the chronology specified.
Once the constructor is complete, all further calculations are performed
without reference to a time-zone (by switching to UTC).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>year</code> - the year</dd><dd><code>monthOfYear</code> - the month of the year</dd><dd><code>chronology</code> - the chronology, null means ISOChronology in the default zone</dd></dl>
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<pre>public static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> now()</pre>
<div class="block">Obtains a <code>YearMonth</code> set to the current system millisecond time
using <code>ISOChronology</code> in the default time zone.
The resulting object does not use the zone.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the current year-month, not null</dd><dt><span class="strong">Since:</span></dt>
<dd>2.0</dd></dl>
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<pre>public static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> now(<a href="../../../org/joda/time/DateTimeZone.html" title="class in org.joda.time">DateTimeZone</a> zone)</pre>
<div class="block">Obtains a <code>YearMonth</code> set to the current system millisecond time
using <code>ISOChronology</code> in the specified time zone.
The resulting object does not use the zone.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>zone</code> - the time zone, not null</dd>
<dt><span class="strong">Returns:</span></dt><dd>the current year-month, not null</dd><dt><span class="strong">Since:</span></dt>
<dd>2.0</dd></dl>
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<pre>public static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> now(<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chronology)</pre>
<div class="block">Obtains a <code>YearMonth</code> set to the current system millisecond time
using the specified chronology.
The resulting object does not use the zone.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>chronology</code> - the chronology, not null</dd>
<dt><span class="strong">Returns:</span></dt><dd>the current year-month, not null</dd><dt><span class="strong">Since:</span></dt>
<dd>2.0</dd></dl>
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<pre>public static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> parse(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> str)</pre>
<div class="block">Parses a <code>YearMonth</code> from the specified string.
<p>
This uses <a href="../../../org/joda/time/format/ISODateTimeFormat.html#localDateParser()"><code>ISODateTimeFormat.localDateParser()</code></a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>str</code> - the string to parse, not null</dd><dt><span class="strong">Since:</span></dt>
<dd>2.0</dd></dl>
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<pre>public static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> parse(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> str,
<a href="../../../org/joda/time/format/DateTimeFormatter.html" title="class in org.joda.time.format">DateTimeFormatter</a> formatter)</pre>
<div class="block">Parses a <code>YearMonth</code> from the specified string using a formatter.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>str</code> - the string to parse, not null</dd><dd><code>formatter</code> - the formatter to use, not null</dd><dt><span class="strong">Since:</span></dt>
<dd>2.0</dd></dl>
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<pre>public static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> fromCalendarFields(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html?is-external=true" title="class or interface in java.util">Calendar</a> calendar)</pre>
<div class="block">Constructs a YearMonth from a <code>java.util.Calendar</code>
using exactly the same field values avoiding any time zone effects.
<p>
Each field is queried from the Calendar and assigned to the YearMonth.
<p>
This factory method ignores the type of the calendar and always
creates a YearMonth with ISO chronology. It is expected that you
will only pass in instances of <code>GregorianCalendar</code> however
this is not validated.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>calendar</code> - the Calendar to extract fields from</dd>
<dt><span class="strong">Returns:</span></dt><dd>the created YearMonth, never null</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 calendar is null</dd>
<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 year or month is invalid for the ISO chronology</dd></dl>
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<pre>public static <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> fromDateFields(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a> date)</pre>
<div class="block">Constructs a YearMonth from a <code>java.util.Date</code>
using exactly the same field values avoiding any time zone effects.
<p>
Each field is queried from the Date and assigned to the YearMonth.
<p>
This factory method always creates a YearMonth with ISO chronology.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>date</code> - the Date to extract fields from</dd>
<dt><span class="strong">Returns:</span></dt><dd>the created YearMonth, never null</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 calendar is null</dd>
<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 year or month is invalid for the ISO chronology</dd></dl>
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<h4>size</h4>
<pre>public int size()</pre>
<div class="block">Gets the number of fields in this partial, which is two.
The supported fields are Year and MonthOfYear.
Note that only these fields may be queried.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/joda/time/ReadablePartial.html#size()">size</a></code> in interface <code><a href="../../../org/joda/time/ReadablePartial.html" title="interface in org.joda.time">ReadablePartial</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>the field count, two</dd></dl>
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<pre>protected <a href="../../../org/joda/time/DateTimeField.html" title="class in org.joda.time">DateTimeField</a> getField(int index,
<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> chrono)</pre>
<div class="block">Gets the field for a specific index in the chronology specified.
<p>
This method must not use any instance variables.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/joda/time/base/AbstractPartial.html#getField(int,%20org.joda.time.Chronology)">getField</a></code> in class <code><a href="../../../org/joda/time/base/AbstractPartial.html" title="class in org.joda.time.base">AbstractPartial</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>index</code> - the index to retrieve</dd><dd><code>chrono</code> - the chronology to use</dd>
<dt><span class="strong">Returns:</span></dt><dd>the field, never null</dd></dl>
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<pre>public <a href="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</a> getFieldType(int index)</pre>
<div class="block">Gets the field type at the specified index.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/joda/time/ReadablePartial.html#getFieldType(int)">getFieldType</a></code> in interface <code><a href="../../../org/joda/time/ReadablePartial.html" title="interface in org.joda.time">ReadablePartial</a></code></dd>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../org/joda/time/base/AbstractPartial.html#getFieldType(int)">getFieldType</a></code> in class <code><a href="../../../org/joda/time/base/AbstractPartial.html" title="class in org.joda.time.base">AbstractPartial</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>index</code> - the index to retrieve</dd>
<dt><span class="strong">Returns:</span></dt><dd>the field at the specified index, never null</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>
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<h4>getFieldTypes</h4>
<pre>public <a href="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</a>[] getFieldTypes()</pre>
<div class="block">Gets an array of the field type of each of the fields that this partial supports.
<p>
The fields are returned largest to smallest, Year, Month.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../org/joda/time/base/AbstractPartial.html#getFieldTypes()">getFieldTypes</a></code> in class <code><a href="../../../org/joda/time/base/AbstractPartial.html" title="class in org.joda.time.base">AbstractPartial</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>the array of field types (cloned), largest to smallest, never null</dd></dl>
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<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> withChronologyRetainFields(<a href="../../../org/joda/time/Chronology.html" title="class in org.joda.time">Chronology</a> newChronology)</pre>
<div class="block">Returns a copy of this year-month with the specified chronology.
This instance is immutable and unaffected by this method call.
<p>
This method retains the values of the fields, thus the result will
typically refer to a different instant.
<p>
The time zone of the specified chronology is ignored, as YearMonth
operates without a time zone.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>newChronology</code> - the new chronology, null means ISO</dd>
<dt><span class="strong">Returns:</span></dt><dd>a copy of this year-month with a different chronology, never null</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 values are invalid for the new chronology</dd></dl>
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<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> withField(<a href="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</a> fieldType,
int value)</pre>
<div class="block">Returns a copy of this year-month with the specified field set to a new value.
<p>
For example, if the field type is <code>monthOfYear</code> then the month
would be changed in the returned instance.
<p>
These three lines are equivalent:
<pre>
YearMonth updated = ym.withField(DateTimeFieldType.monthOfYear(), 6);
YearMonth updated = ym.monthOfYear().setCopy(6);
YearMonth updated = ym.property(DateTimeFieldType.monthOfYear()).setCopy(6);
</pre></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>fieldType</code> - the field type to set, not null</dd><dd><code>value</code> - the value to set</dd>
<dt><span class="strong">Returns:</span></dt><dd>a copy of this instance with the field set, never null</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 null or invalid</dd></dl>
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<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> withFieldAdded(<a href="../../../org/joda/time/DurationFieldType.html" title="class in org.joda.time">DurationFieldType</a> fieldType,
int amount)</pre>
<div class="block">Returns a copy of this year-month with the value of the specified field increased.
<p>
If the addition is zero, then <code>this</code> is returned.
<p>
These three lines are equivalent:
<pre>
YearMonth added = ym.withFieldAdded(DurationFieldType.months(), 6);
YearMonth added = ym.plusMonths(6);
YearMonth added = ym.monthOfYear().addToCopy(6);
</pre></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>fieldType</code> - the field type to add to, not null</dd><dd><code>amount</code> - the amount to add</dd>
<dt><span class="strong">Returns:</span></dt><dd>a copy of this instance with the field updated, never null</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 null or invalid</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 new date-time exceeds the capacity</dd></dl>
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<h4>withPeriodAdded</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> withPeriodAdded(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a> period,
int scalar)</pre>
<div class="block">Returns a copy of this year-month with the specified period added.
<p>
If the addition is zero, then <code>this</code> is returned.
Fields in the period that aren't present in the partial are ignored.
<p>
This method is typically used to add multiple copies of complex
period instances. Adding one field is best achieved using methods
like <a href="../../../org/joda/time/YearMonth.html#withFieldAdded(org.joda.time.DurationFieldType,%20int)"><code>withFieldAdded(DurationFieldType, int)</code></a>
or <a href="../../../org/joda/time/YearMonth.html#plusYears(int)"><code>plusYears(int)</code></a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>period</code> - the period to add to this one, null means zero</dd><dd><code>scalar</code> - the amount of times to add, such as -1 to subtract once</dd>
<dt><span class="strong">Returns:</span></dt><dd>a copy of this instance with the period added, never null</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 new date-time exceeds the capacity</dd></dl>
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<h4>plus</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> plus(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a> period)</pre>
<div class="block">Returns a copy of this year-month with the specified period added.
<p>
If the amount is zero or null, then <code>this</code> is returned.
<p>
This method is typically used to add complex period instances.
Adding one field is best achieved using methods
like <a href="../../../org/joda/time/YearMonth.html#plusYears(int)"><code>plusYears(int)</code></a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>period</code> - the duration to add to this one, null means zero</dd>
<dt><span class="strong">Returns:</span></dt><dd>a copy of this instance with the period added, never null</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 new year-month exceeds the capacity</dd></dl>
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<h4>plusYears</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> plusYears(int years)</pre>
<div class="block">Returns a copy of this year-month plus the specified number of years.
<p>
This year-month instance is immutable and unaffected by this method call.
<p>
The following three lines are identical in effect:
<pre>
YearMonth added = ym.plusYears(6);
YearMonth added = ym.plus(Period.years(6));
YearMonth added = ym.withFieldAdded(DurationFieldType.years(), 6);
</pre></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>years</code> - the amount of years to add, may be negative</dd>
<dt><span class="strong">Returns:</span></dt><dd>the new year-month plus the increased years, never null</dd></dl>
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<h4>plusMonths</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> plusMonths(int months)</pre>
<div class="block">Returns a copy of this year-month plus the specified number of months.
<p>
This year-month instance is immutable and unaffected by this method call.
<p>
The following three lines are identical in effect:
<pre>
YearMonth added = ym.plusMonths(6);
YearMonth added = ym.plus(Period.months(6));
YearMonth added = ym.withFieldAdded(DurationFieldType.months(), 6);
</pre></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>months</code> - the amount of months to add, may be negative</dd>
<dt><span class="strong">Returns:</span></dt><dd>the new year-month plus the increased months, never null</dd></dl>
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<h4>minus</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> minus(<a href="../../../org/joda/time/ReadablePeriod.html" title="interface in org.joda.time">ReadablePeriod</a> period)</pre>
<div class="block">Returns a copy of this year-month with the specified period taken away.
<p>
If the amount is zero or null, then <code>this</code> is returned.
<p>
This method is typically used to subtract complex period instances.
Subtracting one field is best achieved using methods
like <a href="../../../org/joda/time/YearMonth.html#minusYears(int)"><code>minusYears(int)</code></a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>period</code> - the period to reduce this instant by</dd>
<dt><span class="strong">Returns:</span></dt><dd>a copy of this instance with the period taken away, never null</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 new year-month exceeds the capacity</dd></dl>
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<h4>minusYears</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> minusYears(int years)</pre>
<div class="block">Returns a copy of this year-month minus the specified number of years.
<p>
This year-month instance is immutable and unaffected by this method call.
<p>
The following three lines are identical in effect:
<pre>
YearMonth subtracted = ym.minusYears(6);
YearMonth subtracted = ym.minus(Period.years(6));
YearMonth subtracted = ym.withFieldAdded(DurationFieldType.years(), -6);
</pre></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>years</code> - the amount of years to subtract, may be negative</dd>
<dt><span class="strong">Returns:</span></dt><dd>the new year-month minus the increased years, never null</dd></dl>
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<h4>minusMonths</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> minusMonths(int months)</pre>
<div class="block">Returns a copy of this year-month minus the specified number of months.
<p>
This year-month instance is immutable and unaffected by this method call.
<p>
The following three lines are identical in effect:
<pre>
YearMonth subtracted = ym.minusMonths(6);
YearMonth subtracted = ym.minus(Period.months(6));
YearMonth subtracted = ym.withFieldAdded(DurationFieldType.months(), -6);
</pre></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>months</code> - the amount of months to subtract, may be negative</dd>
<dt><span class="strong">Returns:</span></dt><dd>the new year-month minus the increased months, never null</dd></dl>
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<h4>toLocalDate</h4>
<pre>public <a href="../../../org/joda/time/LocalDate.html" title="class in org.joda.time">LocalDate</a> toLocalDate(int dayOfMonth)</pre>
<div class="block">Converts this object to a LocalDate with the same year-month and chronology.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>dayOfMonth</code> - the day of month to use, valid for chronology, such as 1-31 for ISO</dd>
<dt><span class="strong">Returns:</span></dt><dd>a LocalDate with the same year-month and chronology, never null</dd></dl>
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<h4>toInterval</h4>
<pre>public <a href="../../../org/joda/time/Interval.html" title="class in org.joda.time">Interval</a> toInterval()</pre>
<div class="block">Converts this object to an Interval representing the whole month.
<p>
The interval will use the chronology of the year-month in the default zone.
<p>
This instance is immutable and unaffected by this method call.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>an interval over the month, never null</dd></dl>
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<a name="toInterval(org.joda.time.DateTimeZone)">
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<h4>toInterval</h4>
<pre>public <a href="../../../org/joda/time/Interval.html" title="class in org.joda.time">Interval</a> toInterval(<a href="../../../org/joda/time/DateTimeZone.html" title="class in org.joda.time">DateTimeZone</a> zone)</pre>
<div class="block">Converts this object to an Interval representing the whole month.
<p>
The interval will use the chronology of the year-month in the specified zone.
<p>
This instance is immutable and unaffected by this method call.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>zone</code> - the zone to get the Interval in, null means default</dd>
<dt><span class="strong">Returns:</span></dt><dd>an interval over the month, never null</dd></dl>
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<h4>getYear</h4>
<pre>public int getYear()</pre>
<div class="block">Get the year field value.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the year</dd></dl>
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<h4>getMonthOfYear</h4>
<pre>public int getMonthOfYear()</pre>
<div class="block">Get the month of year field value.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the month of year</dd></dl>
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<h4>withYear</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> withYear(int year)</pre>
<div class="block">Returns a copy of this year-month with the year field updated.
<p>
YearMonth is immutable, so there are no set methods.
Instead, this method returns a new instance with the value of
year changed.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>year</code> - the year to set</dd>
<dt><span class="strong">Returns:</span></dt><dd>a copy of this object with the field set, never null</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>withMonthOfYear</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.html" title="class in org.joda.time">YearMonth</a> withMonthOfYear(int monthOfYear)</pre>
<div class="block">Returns a copy of this year-month with the month of year field updated.
<p>
YearMonth is immutable, so there are no set methods.
Instead, this method returns a new instance with the value of
month of year changed.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>monthOfYear</code> - the month of year to set</dd>
<dt><span class="strong">Returns:</span></dt><dd>a copy of this object with the field set, never null</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>property</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.Property.html" title="class in org.joda.time">YearMonth.Property</a> property(<a href="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</a> type)</pre>
<div class="block">Gets the property object for the specified type, which contains
many useful methods.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>type</code> - the field type to get the property for</dd>
<dt><span class="strong">Returns:</span></dt><dd>the property object</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 unsupported</dd></dl>
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<h4>year</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.Property.html" title="class in org.joda.time">YearMonth.Property</a> year()</pre>
<div class="block">Get the year field property which provides access to advanced functionality.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the year property</dd></dl>
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<h4>monthOfYear</h4>
<pre>public <a href="../../../org/joda/time/YearMonth.Property.html" title="class in org.joda.time">YearMonth.Property</a> monthOfYear()</pre>
<div class="block">Get the month of year field property which provides access to advanced functionality.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the month of year property</dd></dl>
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<h4>toString</h4>
<pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> toString()</pre>
<div class="block">Output the year-month in ISO8601 format (yyyy-MM).</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/joda/time/ReadablePartial.html#toString()">toString</a></code> in interface <code><a href="../../../org/joda/time/ReadablePartial.html" title="interface in org.joda.time">ReadablePartial</a></code></dd>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a></code> in class <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>ISO8601 time formatted string.</dd></dl>
</li>
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<h4>toString</h4>
<pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> toString(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> pattern)</pre>
<div class="block">Output the year-month using the specified format pattern.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../org/joda/time/base/BasePartial.html#toString(java.lang.String)">toString</a></code> in class <code><a href="../../../org/joda/time/base/BasePartial.html" title="class in org.joda.time.base">BasePartial</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>pattern</code> - the pattern specification, null means use <code>toString</code></dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/joda/time/format/DateTimeFormat.html" title="class in org.joda.time.format"><code>DateTimeFormat</code></a></dd></dl>
</li>
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<a name="toString(java.lang.String, java.util.Locale)">
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<h4>toString</h4>
<pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> toString(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> pattern,
<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Locale.html?is-external=true" title="class or interface in java.util">Locale</a> locale)
throws <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></pre>
<div class="block">Output the year-month using the specified format pattern.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../org/joda/time/base/BasePartial.html#toString(java.lang.String,%20java.util.Locale)">toString</a></code> in class <code><a href="../../../org/joda/time/base/BasePartial.html" title="class in org.joda.time.base">BasePartial</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>pattern</code> - the pattern specification, null means use <code>toString</code></dd><dd><code>locale</code> - Locale to use, null means default</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></dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/joda/time/format/DateTimeFormat.html" title="class in org.joda.time.format"><code>DateTimeFormat</code></a></dd></dl>
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