为什么 System.currentTimeMillis() 有很大的价值？
Why does System.currentTimeMillis() have a big value?
当我在我的主要方法中打印它时
System.out.println(System.currentTimeMillis());
我得到了一个非常大的数字。
不知道是什么意思？
能解释一下吗？
System.currentTimeMillis() 返回的值表示自 1970 年 1 月 1 日以来的毫秒数，0:00 UTC。
Returns the current time in milliseconds. Note that while the unit of time of the return value is a millisecond, the granularity of the value depends on the underlying operating system and may be larger. For example, many operating systems measure time in units of tens of milliseconds.
See the description of the class Date for a discussion of slight discrepancies that may arise between "computer time" and coordinated universal time (UTC).
Returns:
the difference, measured in milliseconds, between the current time and midnight, January 1, 1970 UTC.
当我在我的主要方法中打印它时
System.out.println(System.currentTimeMillis());
我得到了一个非常大的数字。
不知道是什么意思？ 能解释一下吗？
System.currentTimeMillis() 返回的值表示自 1970 年 1 月 1 日以来的毫秒数，0:00 UTC。
Returns the current time in milliseconds. Note that while the unit of time of the return value is a millisecond, the granularity of the value depends on the underlying operating system and may be larger. For example, many operating systems measure time in units of tens of milliseconds. See the description of the class Date for a discussion of slight discrepancies that may arise between "computer time" and coordinated universal time (UTC).
Returns: the difference, measured in milliseconds, between the current time and midnight, January 1, 1970 UTC.