获得当前的int星期几增加一

Question

我必须将当前的一周当作int并且我使用Calendar，但我将它增加1，为什么？

Calendar c = Calendar.getInstance();
c.setTime(new Date());
int dayOfWeek = c.get(Calendar.DAY_OF_WEEK);

今天是星期二，它返回3，而不是2。

Answer 1

值如下：

Sunday = 1
Monday = 2
Tuesday = 3
Wednesday = 4
Thursday = 5
Friday = 6
Saturday = 7

您可以这样检查：

System.out.println(Calendar.SUNDAY);

Answer 2

值在java.util.Calendar类中定义：

/**
 * Value of the {@link #DAY_OF_WEEK} field indicating
 * Sunday.
 */
public final static int SUNDAY = 1;

/**
 * Value of the {@link #DAY_OF_WEEK} field indicating
 * Monday.
 */
public final static int MONDAY = 2;

/**
 * Value of the {@link #DAY_OF_WEEK} field indicating
 * Tuesday.
 */
public final static int TUESDAY = 3;