判断某个日期是不是该月的第一天或最后一天

 /**
     * 判断该日期是否是该月的第一天
     * 
     * @param date
     *            需要判断的日期
     * @return
     */
    public boolean isFirstDayOfMonth(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        System.out.println(calendar.get(Calendar.MONTH));
        return calendar.get(Calendar.DAY_OF_MONTH) == 1;
}


/**
	 * 判断该日期是否是该月的最后一天
	 * 
	 * @param date
	 *            需要判断的日期
	 * @return
	 */
	public boolean isLastDayOfMonth(Date date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		return calendar.get(Calendar.DAY_OF_MONTH) == calendar
				.getActualMaximum(Calendar.DAY_OF_MONTH);
	}