本文整理了Java中org.joda.time.YearMonth类的一些代码示例，展示了YearMonth类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。YearMonth类的具体详情如下：
包路径：org.joda.time.YearMonth
类名称：YearMonth

YearMonth介绍

[英]YearMonth is an immutable partial supporting the year and monthOfYear fields.

NOTE: This class only supports the two fields listed above. It is impossible to query any other fields, such as dayOfWeek or centuryOfEra.

Calculations on YearMonth are performed using a Chronology. This chronology is set to be in the UTC time zone for all calculations.

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.

Each individual field can be queried in two ways:

• getMonthOfYear()

• monthOfYear().get()
  The second technique also provides access to other useful methods on the field:

• numeric value - monthOfYear().get()

• text value - monthOfYear().getAsText()

• short text value - monthOfYear().getAsShortText()

• maximum/minimum values - monthOfYear().getMaximumValue()

• add/subtract - monthOfYear().addToCopy()

• set - monthOfYear().setCopy()

YearMonth is thread-safe and immutable, provided that the Chronology is as well. All standard Chronology classes supplied are thread-safe and immutable.
[中]YearMonth是支持year和monthOfYear字段的不可变部分。
注意：这个类只支持上面列出的两个字段。无法查询任何其他字段，例如dayOfWeek或centuryOfEra。
使用年表对年和月进行计算。对于所有计算，该年表设置为UTC时区。
这个类的一个用例是存储信用卡到期日，因为它只引用年份和月份。此类可以用作XML模式中的gYearMonth类型。
可以通过两种方式查询每个字段：

• getMonthOfYear()
• monthOfYear().get()
  第二种技术还提供了现场其他有用方法：
  *数值-monthOfYear().get()
  *文本值-monthOfYear().getAsText()
  *短文本值-monthOfYear().getAsShortText()
  *最大值/最小值-monthOfYear().getMaximumValue()
  *加/减-monthOfYear().addToCopy()
  *套装-monthOfYear().setCopy()
  YearMonth是线程安全且不可变的，前提是年表也是。提供的所有标准时序类都是线程安全且不可变的。

代码示例

代码示例来源：origin: spring-projects/spring-framework

@Override
public YearMonth parse(String text, Locale locale) throws ParseException {
  return YearMonth.parse(text);
}

代码示例来源：origin: joda-time/joda-time

/**
 * 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.
 *
 * @param monthOfYear  the month of year to set
 * @return a copy of this object with the field set, never null
 * @throws IllegalArgumentException if the value is invalid
 */
public YearMonth withMonthOfYear(int monthOfYear) {
  int[] newValues = getValues();
  newValues = getChronology().monthOfYear().set(this, MONTH_OF_YEAR, newValues, monthOfYear);
  return new YearMonth(this, newValues);
}

代码示例来源：origin: spring-projects/spring-framework

@Override
public String print(YearMonth object, Locale locale) {
  return object.toString();
}

代码示例来源：origin: joda-time/joda-time

/**
 * Converts this object to a LocalDate with the same year-month and chronology.
 *
 * @param dayOfMonth the day of month to use, valid for chronology, such as 1-31 for ISO
 * @return a LocalDate with the same year-month and chronology, never null
 */
public LocalDate toLocalDate(int dayOfMonth) {
  return new LocalDate(getYear(), getMonthOfYear(), dayOfMonth, getChronology());
}

代码示例来源：origin: joda-time/joda-time

/**
 * 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.
 *
 * @param year  the year to set
 * @return a copy of this object with the field set, never null
 * @throws IllegalArgumentException if the value is invalid
 */
public YearMonth withYear(int year) {
  int[] newValues = getValues();
  newValues = getChronology().year().set(this, YEAR, newValues, year);
  return new YearMonth(this, newValues);
}

代码示例来源：origin: joda-time/joda-time

/**
 * 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>
 *
 * @param fieldType  the field type to set, not null
 * @param value  the value to set
 * @return a copy of this instance with the field set, never null
 * @throws IllegalArgumentException if the value is null or invalid
 */
public YearMonth withField(DateTimeFieldType fieldType, int value) {
  int index = indexOfSupported(fieldType);
  if (value == getValue(index)) {
    return this;
  }
  int[] newValues = getValues();
  newValues = getField(index).set(this, index, newValues, value);
  return new YearMonth(this, newValues);
}

代码示例来源：origin: joda-time/joda-time

/**
 * Handle broken serialization from other tools.
 * @return the resolved object, not null
 */
private Object readResolve() {
  if (DateTimeZone.UTC.equals(getChronology().getZone()) == false) {
    return new YearMonth(this, getChronology().withUTC());
  }
  return this;
}

代码示例来源：origin: joda-time/joda-time

/**
 * 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>
 * 
 * @param fieldType  the field type to add to, not null
 * @param amount  the amount to add
 * @return a copy of this instance with the field updated, never null
 * @throws IllegalArgumentException if the value is null or invalid
 * @throws ArithmeticException if the new date-time exceeds the capacity
 */
public YearMonth withFieldAdded(DurationFieldType fieldType, int amount) {
  int index = indexOfSupported(fieldType);
  if (amount == 0) {
    return this;
  }
  int[] newValues = getValues();
  newValues = getField(index).add(this, index, newValues, amount);
  return new YearMonth(this, newValues);
}

代码示例来源：origin: joda-time/joda-time

return this;
int[] newValues = getValues();
for (int i = 0; i < period.size(); i++) {
  DurationFieldType fieldType = period.getFieldType(i);
  int index = indexOf(fieldType);
  if (index >= 0) {
    newValues = getField(index).add(this, index, newValues,
        FieldUtils.safeMultiply(period.getValue(i), scalar));
return new YearMonth(this, newValues);

代码示例来源：origin: joda-time/joda-time

/**
 * 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.
 *
 * @param newChronology  the new chronology, null means ISO
 * @return a copy of this year-month with a different chronology, never null
 * @throws IllegalArgumentException if the values are invalid for the new chronology
 */
public YearMonth withChronologyRetainFields(Chronology newChronology) {
  newChronology = DateTimeUtils.getChronology(newChronology);
  newChronology = newChronology.withUTC();
  if (newChronology == getChronology()) {
    return this;
  } else {
    YearMonth newYearMonth = new YearMonth(this, newChronology);
    newChronology.validate(newYearMonth, getValues());
    return newYearMonth;
  }
}

代码示例来源：origin: joda-time/joda-time

/**
 * Sets this field in a copy of the YearMonth.
 * <p>
 * The YearMonth attached to this property is unchanged by this call.
 * Instead, a new instance is returned.
 * 
 * @param value  the value to set the field in the copy to
 * @return a copy of the YearMonth with the field value changed
 * @throws IllegalArgumentException if the value isn't valid
 */
public YearMonth setCopy(int value) {
  int[] newValues = iBase.getValues();
  newValues = getField().set(iBase, iFieldIndex, newValues, value);
  return new YearMonth(iBase, newValues);
}

代码示例来源：origin: joda-time/joda-time

/**
 * Adds to the value of this field in a copy of this YearMonth.
 * <p>
 * The value will be added to this field. If the value is too large to be
 * added solely to this field then it will affect larger fields.
 * Smaller fields are unaffected.
 * <p>
 * If the result would be too large, beyond the maximum year, then an
 * IllegalArgumentException is thrown.
 * <p>
 * The YearMonth attached to this property is unchanged by this call.
 * Instead, a new instance is returned.
 * 
 * @param valueToAdd  the value to add to the field in the copy
 * @return a copy of the YearMonth with the field value changed
 * @throws IllegalArgumentException if the value isn't valid
 */
public YearMonth addToCopy(int valueToAdd) {
  int[] newValues = iBase.getValues();
  newValues = getField().add(iBase, iFieldIndex, newValues, valueToAdd);
  return new YearMonth(iBase, newValues);
}

代码示例来源：origin: joda-time/joda-time

/**
 * 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.
 *
 * @param zone  the zone to get the Interval in, null means default
 * @return an interval over the month, never null
 */
public Interval toInterval(DateTimeZone zone) {
  zone = DateTimeUtils.getZone(zone);
  DateTime start = toLocalDate(1).toDateTimeAtStartOfDay(zone);
  DateTime end = plusMonths(1).toLocalDate(1).toDateTimeAtStartOfDay(zone);
  return new Interval(start, end);
}

代码示例来源：origin: joda-time/joda-time

/**
 * Adds to the value of this field in a copy of this YearMonth wrapping
 * within this field if the maximum value is reached.
 * <p>
 * The value will be added to this field. If the value is too large to be
 * added solely to this field then it wraps within this field.
 * Other fields are unaffected.
 * <p>
 * For example,
 * <code>2004-12</code> addWrapField one month returns <code>2004-01</code>.
 * <p>
 * The YearMonth attached to this property is unchanged by this call.
 * Instead, a new instance is returned.
 * 
 * @param valueToAdd  the value to add to the field in the copy
 * @return a copy of the YearMonth with the field value changed
 * @throws IllegalArgumentException if the value isn't valid
 */
public YearMonth addWrapFieldToCopy(int valueToAdd) {
  int[] newValues = iBase.getValues();
  newValues = getField().addWrapField(iBase, iFieldIndex, newValues, valueToAdd);
  return new YearMonth(iBase, newValues);
}

代码示例来源：origin: pl.edu.icm.synat/synat-business-services-impl

private PersistableMonthItem getMonthItem(PersistablePublicationDownload download, PersistableAbstractReportItem<?> item) {
  YearMonth yearMonth = new YearMonth(download.getDownloadDate());
  for (PersistableMonthItem monthItem : item.getMonthCounts()) {
    YearMonth itemYearMonth = new YearMonth(monthItem.getYear(), monthItem.getMonth());
    if (itemYearMonth.equals(yearMonth)) {
      return monthItem;
    }
  }
  PersistableMonthItem monthItem = new PersistableMonthItem();
  monthItem.setReportItem(item);
  monthItem.setMonth(yearMonth.getMonthOfYear());
  monthItem.setYear(yearMonth.getYear());
  item.getMonthCounts().add(monthItem);
  return monthItem;
}

代码示例来源：origin: pl.edu.icm.synat/synat-console-core

private int getIntervalColumnsCount(Date intervalFrom, Date intervalTo) {
  YearMonth yearMonthStart = new YearMonth(intervalFrom.getTime());
  YearMonth yearMonthEnd = new YearMonth(intervalTo.getTime());
  int yearsDifference = yearMonthEnd.getYear() - yearMonthStart.getYear();
  int monthsDifference = yearMonthEnd.getMonthOfYear() - yearMonthStart.getMonthOfYear();
  return 1 + yearsDifference * 12 + monthsDifference;
}

代码示例来源：origin: joda-time/joda-time

/**
 * Obtains a {@code YearMonth} set to the current system millisecond time
 * using <code>ISOChronology</code> in the default time zone.
 * The resulting object does not use the zone.
 * 
 * @return the current year-month, not null
 * @since 2.0
 */
public static YearMonth now() {
  return new YearMonth();
}

代码示例来源：origin: joda-time/joda-time

/**
 * Get the year field value.
 *
 * @return the year
 */
public int getYear() {
  return getValue(YEAR);
}

代码示例来源：origin: astamuse/asta4d

@Test(dataProvider = "string2ym")
  public void testString2Java8YearMonth(String s, YearMonth ym) throws Exception {
    String2Java8YearMonth convertor = new String2Java8YearMonth();
    Assert.assertEquals(convertor.convert(s), java.time.YearMonth.of(ym.getYear(), ym.getMonthOfYear()));
  }
}

代码示例来源：origin: pl.edu.icm.synat/synat-console-core

private List<YearMonth> getMonths(Date intervalFrom, Date intervalTo) {
  int intervalColumnsCount = getIntervalColumnsCount(intervalFrom, intervalTo);
  List<YearMonth> months = new ArrayList<>();
  YearMonth yearMonth = new YearMonth(intervalFrom);
  for (int i = 0; i < intervalColumnsCount; i++) {
    months.add(yearMonth);
    yearMonth = yearMonth.plusMonths(1);
  }
  return months;
}