cn.hutool.core.date.Month Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of hutool-all Show documentation
Show all versions of hutool-all Show documentation
Hutool是一个小而全的Java工具类库,通过静态方法封装,降低相关API的学习成本,提高工作效率,使Java拥有函数式语言般的优雅,让Java语言也可以“甜甜的”。
package cn.hutool.core.date;
import cn.hutool.core.lang.Assert;
import cn.hutool.core.util.ArrayUtil;
import java.time.format.TextStyle;
import java.util.Calendar;
import java.util.Locale;
/**
* 月份枚举
* 与Calendar中的月份int值对应
*
* @author Looly
* @see Calendar#JANUARY
* @see Calendar#FEBRUARY
* @see Calendar#MARCH
* @see Calendar#APRIL
* @see Calendar#MAY
* @see Calendar#JUNE
* @see Calendar#JULY
* @see Calendar#AUGUST
* @see Calendar#SEPTEMBER
* @see Calendar#OCTOBER
* @see Calendar#NOVEMBER
* @see Calendar#DECEMBER
* @see Calendar#UNDECIMBER
*/
public enum Month {
/**
* 一月
*/
JANUARY(Calendar.JANUARY),
/**
* 二月
*/
FEBRUARY(Calendar.FEBRUARY),
/**
* 三月
*/
MARCH(Calendar.MARCH),
/**
* 四月
*/
APRIL(Calendar.APRIL),
/**
* 五月
*/
MAY(Calendar.MAY),
/**
* 六月
*/
JUNE(Calendar.JUNE),
/**
* 七月
*/
JULY(Calendar.JULY),
/**
* 八月
*/
AUGUST(Calendar.AUGUST),
/**
* 九月
*/
SEPTEMBER(Calendar.SEPTEMBER),
/**
* 十月
*/
OCTOBER(Calendar.OCTOBER),
/**
* 十一月
*/
NOVEMBER(Calendar.NOVEMBER),
/**
* 十二月
*/
DECEMBER(Calendar.DECEMBER),
/**
* 十三月,仅用于农历
*/
UNDECIMBER(Calendar.UNDECIMBER);
// ---------------------------------------------------------------
/**
* Months aliases.
*/
private static final String[] ALIASES = {"jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec"};
private static final Month[] ENUMS = Month.values();
/**
* 对应值,见{@link Calendar}
*/
private final int value;
/**
* 构造
*
* @param value 对应值,见{@link Calendar}
*/
Month(int value) {
this.value = value;
}
/**
* 获取{@link Calendar}中的对应值
* 此值从0开始,即0表示一月
*
* @return {@link Calendar}中的对应月份值,从0开始计数
*/
public int getValue() {
return this.value;
}
/**
* 获取月份值,此值与{@link java.time.Month}对应
* 此值从1开始,即1表示一月
*
* @return 月份值,对应{@link java.time.Month},从1开始计数
* @since 5.7.21
*/
public int getValueBaseOne() {
Assert.isFalse(this == UNDECIMBER, "Unsupported UNDECIMBER Field");
return getValue() + 1;
}
/**
* 获取此月份最后一天的值,不支持的月份(例如UNDECIMBER)返回-1
*
* @param isLeapYear 是否闰年
* @return 此月份最后一天的值
*/
public int getLastDay(boolean isLeapYear) {
switch (this) {
case FEBRUARY:
return isLeapYear ? 29 : 28;
case APRIL:
case JUNE:
case SEPTEMBER:
case NOVEMBER:
return 30;
default:
return 31;
}
}
/**
* 将 {@link Calendar}月份相关值转换为Month枚举对象
* 未找到返回{@code null}
*
* @param calendarMonthIntValue Calendar中关于Month的int值,从0开始
* @return Month
* @see Calendar#JANUARY
* @see Calendar#FEBRUARY
* @see Calendar#MARCH
* @see Calendar#APRIL
* @see Calendar#MAY
* @see Calendar#JUNE
* @see Calendar#JULY
* @see Calendar#AUGUST
* @see Calendar#SEPTEMBER
* @see Calendar#OCTOBER
* @see Calendar#NOVEMBER
* @see Calendar#DECEMBER
* @see Calendar#UNDECIMBER
*/
public static Month of(int calendarMonthIntValue) {
if (calendarMonthIntValue >= ENUMS.length || calendarMonthIntValue < 0) {
return null;
}
return ENUMS[calendarMonthIntValue];
}
/**
* 解析别名为Month对象,别名如:jan或者JANUARY,不区分大小写
*
* @param name 别名值
* @return 月份枚举Month,非空
* @throws IllegalArgumentException 如果别名无对应的枚举,抛出此异常
* @since 5.8.0
*/
public static Month of(String name) throws IllegalArgumentException {
Assert.notBlank(name);
Month of = of(ArrayUtil.indexOfIgnoreCase(ALIASES, name));
if (null == of) {
of = Month.valueOf(name.toUpperCase());
}
return of;
}
/**
* {@link java.time.Month}转换为Month对象
* @param month {@link java.time.Month}
* @return Month
* @since 5.8.0
*/
public static Month of(java.time.Month month){
return of(month.ordinal());
}
/**
* 获得指定月的最后一天
*
* @param month 月份,从0开始
* @param isLeapYear 是否为闰年,闰年只对二月有影响
* @return 最后一天,可能为28,29,30,31
* @since 5.4.7
*/
public static int getLastDay(int month, boolean isLeapYear) {
final Month of = of(month);
Assert.notNull(of, "Invalid Month base 0: " + month);
return of.getLastDay(isLeapYear);
}
/**
* 转换为{@link java.time.Month}
*
* @return {@link java.time.Month}
* @since 5.7.21
*/
public java.time.Month toJdkMonth() {
return java.time.Month.of(getValueBaseOne());
}
/**
* 获取显示名称
*
* @param style 名称风格
* @return 显示名称
* @since 5.8.0
*/
public String getDisplayName(TextStyle style) {
return getDisplayName(style, Locale.getDefault());
}
/**
* 获取显示名称
*
* @param style 名称风格
* @param locale {@link Locale}
* @return 显示名称
* @since 5.8.0
*/
public String getDisplayName(TextStyle style, Locale locale) {
return toJdkMonth().getDisplayName(style, locale);
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy