JAVA to get the current system time

Little scum · Posted on 8/21/2018 4:37:18 PM

1、Date day=new Date();

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

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

Date class to get the current time

2、SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); System.out.println(df.format(System.currentTimeMillis()));

Get the current time via the currentTimeMillis method in the System class

3、Calendar c = Calendar.getInstance(); Can be modified individually 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);

Use the Calendar class to get the current time

4、 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);

Date class to get the current time

Summary: Setting the time format can be set by calling the SimpleDateFormat class and by using the format method in String. This can be obtained via the Date class and currentTimeMillis in System!

[Source] JAVA to get the current system time

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