Java 如何从 currentTimeMillis() 获取可读时间
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How to get readable time from currentTimeMillis()
提问by user2802221
So below there's a simple way to get a readout from current time millis, but how do I get from my millisecond value to a readable time? Would I be just a stack of modulus that are dividing incrementally by 60? (exception being 100 milliseconds to a second)
所以下面有一种简单的方法可以从当前时间毫秒获取读数，但是如何从毫秒值获取可读时间？我会只是一堆被 60 除以增量的模数吗？（例外是 100 毫秒到一秒）
Would I be right in thinking/doing that?
我这样想/这样做是对的吗？
Thanks in advance for any help you can give
预先感谢您提供的任何帮助
public class DisplayTime {
public static void main(String[] args) {
System.out.print("Current time in milliseconds = ");
System.out.println(System.currentTimeMillis());
}
}
回答by BackSlash
Use that value with a Calendarobject
将该值与Calendar对象一起使用
Calendar c = Calendar.getInstance();
c.setTimeInMillis(System.currentTimeMillis());
String date = c.get(Calendar.YEAR)+"-"+c.get(Calendar.MONTH)+"-"+c.get(Calendar.DAY_OF_MONTH);
String time = c.get(Calendar.HOUR_OF_DAY)+":"+c.get(Calendar.MINUTE)+":"+c.get(Calendar.SECOND);
System.out.println(date + " " + time);
Output:
输出：
2013-8-21 16:27:31
Note:c.getInstance()already holds the current datetime, so the second line is redundant. I added it to show how to set the time in millis to the Calendarobject
注意：c.getInstance()已经保存了当前的日期时间，所以第二行是多余的。我添加它以显示如何以毫秒为单位设置Calendar对象的时间
回答by Rahul Tripathi
回答by Ahmed Adel Ismail
System.out.println(new java.util.Date());
is the same as
是相同的
System.out.println(new java.util.Date(System.currentTimeMillis()));
bothe represent the current time in a readable format
bothe 以可读格式表示当前时间
