How to get system time in Java

This article focuses on "how to get system time in Java". Friends who are interested may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to get system time in Java.

Examples of specific operations:

1. Get the current time through the Date class.

Date day=new Date ()

SimpleDateFormat df = new SimpleDateFormat ("yyyy-MM-dd HH:mm:ss")

System.out.println (df.format (day))

2. Get the current time through the currentTimeMillis method in the System class.

SimpleDateFormat df = new SimpleDateFormat ("yyyy-MM-dd HH:mm:ss")

System.out.println (df.format (System.currentTimeMillis ()

3. Get the current time through the Calendar class.

Calendar c = Calendar.getInstance (); / / can be modified separately for each time domain

Int year = c.get (Calendar.YEAR)

Int month = c.get (Calendar.MONTH)

Int date = c.get (Calendar.DATE)

Int hour = c.get (Calendar.HOUR_OF_DAY)

Int minute = c.get (Calendar.MINUTE)

Int second = c.get (Calendar.SECOND)

System.out.println (year + "/" + month + "/" + date + "" + hour + ":" + minute + ":" + second)

4. Get the current date through the Date class.

Date date = new Date ()

String year = String.format ("% tY", date)

String month = String.format ("% tB", date)

String day = String.format ("% te", date)

System.out.println ("Today is:" + year+ "-" + month+ "-" + day)

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