JAVA获取指定日期是星期几

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/**  * 获取指定日期是星期几<br>  *  * @param date  * @return 指定日期是星期几  */ public static String getWeekOfDate(Date date) {     String[] weekDays = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };     Calendar cal = Calendar.getInstance();     cal.setTime(date);     int w = cal.get(Calendar.DAY_OF_WEEK) - 1;     if (w < 0)         w = 0;     return weekDays[w]; }