java獲取當前時間是星期幾

public static String getWeek() {
    String[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
    Calendar mCalendar = Calendar.getInstance();
    mCalendar.setTime(new Date());
    int day = mCalendar.get(Calendar.DAY_OF_WEEK) - 1;
    if (day < 0)
        day = 0;
    return weekDays[day];
}

直接調用即可