java获取某个月最后一天

代码如下：

public static String getLastDayOfMonth(int year,int month)
    {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.YEAR, year);
        calendar.set(Calendar.MONTH, month-1);
        calendar.set(Calendar.DAY_OF_MONTH, 1);
        calendar.set(Calendar.DATE, calendar.getActualMaximum(Calendar.DATE));
        DateFormat format = new SimpleDateFormat("yyyy-MM-dd ");
        return format.format(calendar.getTime());
    }

测试如下：