157 lines
2.8 KiB
Java
157 lines
2.8 KiB
Java
package com.nlf.calendar;
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import java.util.ArrayList;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.List;
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/**
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* 阳历半年
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*
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* @author 6tail
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*/
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public class SolarHalfYear {
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/**
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* 年
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*/
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private final int year;
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/**
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* 月
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*/
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private final int month;
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/**
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* 半年的月数
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*/
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public static final int MONTH_COUNT = 6;
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/**
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* 默认当月
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*/
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public SolarHalfYear() {
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this(new Date());
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}
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/**
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* 通过日期初始化
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*/
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public SolarHalfYear(Date date) {
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Solar solar = Solar.fromDate(date);
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year = solar.getYear();
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month = solar.getMonth();
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}
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/**
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* 通过日历初始化
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*/
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@Deprecated
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public SolarHalfYear(Calendar calendar) {
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year = calendar.get(Calendar.YEAR);
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month = calendar.get(Calendar.MONTH) + 1;
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}
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/**
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* 通过年月初始化
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*
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* @param year 年
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* @param month 月
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*/
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public SolarHalfYear(int year, int month) {
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this.year = year;
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this.month = month;
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}
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/**
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* 通过指定日期获取阳历半年
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*
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* @param date 日期
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* @return 阳历半年
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*/
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public static SolarHalfYear fromDate(Date date) {
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return new SolarHalfYear(date);
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}
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/**
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* 通过指定日历获取阳历半年
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*
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* @param calendar 日历
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* @return 阳历半年
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*/
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@Deprecated
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public static SolarHalfYear fromCalendar(Calendar calendar) {
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return new SolarHalfYear(calendar);
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}
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/**
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* 通过指定年月获取阳历半年
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*
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* @param year 年
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* @param month 月
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* @return 阳历半年
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*/
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public static SolarHalfYear fromYm(int year, int month) {
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return new SolarHalfYear(year, month);
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}
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/**
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* 获取年
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*
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* @return 年
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*/
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public int getYear() {
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return year;
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}
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/**
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* 获取月
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*
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* @return 月
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*/
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public int getMonth() {
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return month;
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}
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/**
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* 获取当月是第几半年
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*
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* @return 半年序号，从1开始
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*/
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public int getIndex() {
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return (int) Math.ceil(month * 1D / MONTH_COUNT);
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}
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/**
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* 半年推移
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*
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* @param halfYears 推移的半年数，负数为倒推
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* @return 推移后的半年
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*/
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public SolarHalfYear next(int halfYears) {
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SolarMonth m = SolarMonth.fromYm(year, month).next(MONTH_COUNT * halfYears);
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return new SolarHalfYear(m.getYear(), m.getMonth());
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}
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/**
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* 获取本半年的月份
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*
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* @return 本半年的月份列表
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*/
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public List<SolarMonth> getMonths() {
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List<SolarMonth> l = new ArrayList<SolarMonth>();
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int index = getIndex() - 1;
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for (int i = 0; i < MONTH_COUNT; i++) {
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l.add(new SolarMonth(year, MONTH_COUNT * index + i + 1));
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}
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return l;
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}
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@Override
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public String toString() {
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return year + "." + getIndex();
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}
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public String toFullString() {
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return year + "年" + (getIndex() == 1 ? "上" : "下") + "半年";
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}
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}
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