获取月的最后一天,开始一天,本周某一天

最新推荐文章于 2023-11-08 23:13:43 发布

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最新推荐文章于 2023-11-08 23:13:43 发布

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分类专栏： java 文章标签： Calendar Date

本文链接：https://blog.youkuaiyun.com/qq_28118609/article/details/91454491

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 /**
     * 获取月的最后一天
     */
    public static String getMonthEnd() {
        final Calendar cal = Calendar.getInstance();
        cal.getActualMaximum(Calendar.DAY_OF_MONTH);
        cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
        final Date date = cal.getTime();
        return CommUtil.parseTimeFormattoDayDate(date);
    }

/**
 * 获取月开始一天
 */
public static String getMonthStart() {
    final Calendar cal = Calendar.getInstance();
    cal.getActualMaximum(Calendar.DAY_OF_MONTH);
    cal.set(Calendar.DAY_OF_MONTH, 1);
    final Date date = cal.getTime();
    return CommUtil.parseTimeFormattoDayDate(date);
}

/**
 * 获取本周某一天 value: Calendar.SUNDAY Calendar.MONDAY Calendar.TUESDAY
 * Calendar.WEDNESDAY Calendar.THURSDAY Calendar.FRIDAY Calendar.SATURDAY
 */
public static String getWeekDay(int value) {
    final Calendar cal = Calendar.getInstance();
    cal.set(Calendar.DAY_OF_WEEK, value);
    final Date date = cal.getTime();
    return CommUtil.parseTimeFormattoDayDate(date);
}
/**
	 * 时间(yyyy-MM-dd):Date格式转String格式
	 */
	public static String parseTimeFormattoDayDate(Date date) {
		String time = null;
		try {
			time = new SimpleDateFormat("yyyy-MM-dd").format(date);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return time;
	}