java 返回上个月的最后一天，java返回最后一天,Calendar cal

java 返回上个月的最后一天，java返回最后一天,Calendar cal

Calendar calendar = Calendar.getInstance();  int month = calendar.get(Calendar.MONTH);calendar.set(Calendar.MONTH, month-1);calendar.set(Calendar.DAY_OF_MONTH,calendar.getActualMaximum(Calendar.DAY_OF_MONTH));  Date strDateTo = calendar.getTime();  System.out.println(formatter.format(strDateTo));