获取当前 int 星期几加一

Question

我必须将当前星期几作为整数，我正在使用 Calendar 但我得到它增加了一个，为什么？

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

它 returns 3 表示今天是星期二，而不是 2。

Answer 1

值是这样的：

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

您可以这样查看：

System.out.println(Calendar.SUNDAY);

Answer 2

值定义在 java.util.Calendar class:

/**
 * 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;