"synonym"在Java中是什么意思？

Question

我阅读了 JAVA API 来自 http://docs.oracle.com/javase/8/docs/api/ 的文档。对于日历class，有以下段落：

DAY_OF_MONTH

public static final int DAY_OF_MONTH

Field number for get and set indicating the day of the month. This is a synonym for DATE. The first day of the month has value 1.

See Also:

DATE, Constant Field Values

描述的有点看不懂，尤其是被“同义词”这个词搞糊涂了。如果有人能给我解释一下这段话，我将不胜感激。

Answer 1

一个synonym is:

synonym noun. 1. a word having the same or nearly the same meaning as another in the language, as happy, joyful, elated. A dictionary of synonyms and antonyms (or opposites). 2. (...)

所以这意味着某物有一个不同的（字段）名称来指代同一事物。

因此文档指定如果您调用 Calendar.DAY_OF_MONTH 或 Calendar.DATE。您将始终获得相同的值。

我们可以通过查看 documentation for Calendar:

来验证这一点

static int DATE

Field number for get and set indicating the day of the month.

static int DAY_OF_MONTH

Field number for get and set indicating the day of the month.

两个字段的文档完全相同。

Answer 2

同义词表示具有相同的含义。

在Calendar的源代码中：

/**
 * Field number for <code>get</code> and <code>set</code> indicating the
 * day of the month. This is a synonym for <code>DAY_OF_MONTH</code>.
 * The first day of the month has value 1.
 *
 * @see #DAY_OF_MONTH
 */
public final static int DATE = 5;

/**
 * Field number for <code>get</code> and <code>set</code> indicating the
 * day of the month. This is a synonym for <code>DATE</code>.
 * The first day of the month has value 1.
 *
 * @see #DATE
 */
public final static int DAY_OF_MONTH = 5;

这里两个值都是5，所以都是一样的

"synonym"在Java中是什么意思？

What does "synonym" mean in Java?

java

synonym