Java 获取当前日期的上个月的最后一天

	/** The Constant DATE_FORMAT. */
	public static final String DATE_FORMAT = "yyyyMMdd";

	public static void main(String[] args) {
		SimpleDateFormat df = new SimpleDateFormat(DATE_FORMAT);

		System.out.println("Now:" + df.format(new Date()));
		Calendar accountingOrderDate = Calendar.getInstance();
		accountingOrderDate.setTime(new Date());
		accountingOrderDate.set(Calendar.DAY_OF_MONTH, 0);

		System.out.println("the last day of previous month:" + df.format(accountingOrderDate.getTime()));

	}	/** The Constant DATE_FORMAT. */
	public static