计算一个月后是星期几，计算星期几,public stati

计算一个月后是星期几，计算星期几,public stati

public static int getWeekByDate(Date date){        Calendar aCalendar = Calendar.getInstance();           aCalendar.setTime(date);           int x = aCalendar.get(Calendar.DAY_OF_WEEK);        int y = 0;        if(x == 1){            y = 7;        }else if(x == 2){            y = 1;        }else if(x == 3){            y = 2;        }else if(x == 4){            y = 3;        }else if(x == 5){            y = 4;        }else if(x == 6){            y = 5;        }else if(x == 7){            y = 6;        }else{            y = -1;        }        return y;    }    public static Date getNextMonthDate(Calendar calendar){         //当前月份         int currentMonth = calendar.get(Calendar.MONTH);         //设置为下一个月         calendar.set(Calendar.MONTH,currentMonth+1);         //获取下个月的时间         Date date = calendar.getTime();         return date;    }    public static void main(String[] args) {         //当前时间         Calendar calendar  = Calendar.getInstance();         Date date = getNextMonthDate(calendar);         //获取当天的星期         int s = getWeekByDate(date);         System.out.println(s);    }//该片段来自于http://byrx.net