java Calendar.DAY_OF_WEEK 周一

在Java中，使用Calendar类的get方法可以获取指定日期的星期几，其中Calendar.DAY_OF_WEEK代表周几，取值范围为1-7，其中1代表周日，2代表周一，以此类推。通过获取当天的Calendar实例后调用get(Calendar.DAY_OF_WEEK)方法即可获得当天是星期几。根据给定的代码和日期"2016-01-04"，可以得到结果为2，表示该日期为周一。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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