获取某月第一天和最后一天
Calendar ? ca ? = ? Calendar.getInstance();?
ca.setTime(new Date()); ? // ? someDate ? 为你要获取的那个月的时间?
ca.set(Calendar.DAY_OF_MONTH, ? 1);?
Date ? firstDate ? = ? ca.getTime();?
ca.add(Calendar.MONTH, ? 1);?
ca.add(Calendar.DAY_OF_MONTH, ? -1);?
Date ? lastDate ? = ? ca.getTime();??
System.out.println(firstDate.toLocaleString());
System.out.println(lastDate.toLocaleString());