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Ask for help! Come check it out! The rookie problem Help us a lot! !! !!

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 China

Post time: 2020-3-7 22:30:01
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Now want to get the system time
If today is January 1, the system time is 2017001
If today is January 5th, the system time is 2017005
How to achieve it! !! !! !! !!
Waiting online, please help! !! !!
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 Korea, Republic of

Post time: 2020-5-27 21:00:01
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Just ask, what do you want to achieve: 2017 + the number of days in the year today?
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 Great Britain

 Author| Post time: 2020-5-27 21:45:01
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Yes that means
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 China

Post time: 2020-5-28 16:00:01
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java.util.Calendar c = java.util.Calendar.getInstance ();
String s = c.get (java.util.Calendar.YEAR) + "" + c.get (java.util.Calendar.DAY_OF_YEAR);
System.out.println (s);
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 China

Post time: 2020-5-28 18:45:01
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I think you should check the API first. If there is a ready-made method, it will be OK.
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 China

 Author| Post time: 2020-5-31 15:30:02
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java.util.Calendar c = java.util.Calendar.getInstance ();
String s = c.get (java.util.Calendar.YEAR) + "" + c.get (java.util.Calendar.DAY_OF_YEAR);
System.out.println (s);

After this implementation is shown as 20175
What I want is to be able to display 2017005 like this

But thank you very much! ! !
Great guys continue to help! ! !
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 China

Post time: 2020-6-1 10:00:01
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Don't you spell strings?


You are so lazy to get home, I regret to tell you the above procedure.
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 China

 Author| Post time: 2020-6-1 20:00:01
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 China

 Author| Post time: 2020-6-1 20:15:01
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Do I add it manually
String s = c.get (java.util.Calendar.YEAR) + "00" + c.get (java.util.Calendar.DAY_OF_YEAR);
In this way, 2017005 is displayed, and 20175 is displayed without addition


This is not a question of string addition

But thank you anyway! !

<SCRIPT language = javascript> <!-
BirthDay = new Date ("january 01,2000"); // Change to your timing date
today = new Date ();
timeold = (today.getTime ()-BirthDay.getTime ());
sectimeold = timeold / 1000
secondsold = Math.floor (sectimeold);
msPerDay = 24 * 60 * 60 * 1000
e_daysold = timeold / msPerDay
daysold = Math.floor (e_daysold);
e_hrsold = (e_daysold-daysold) * 24;
hrsold = Math.floor (e_hrsold);
e_minsold = (e_hrsold-hrsold) * 60;
minsold = Math.floor ((e_hrsold-hrsold) * 60);
seconds = Math.floor ((e_minsold-minsold) * 60);
//->
</ SCRIPT> <SCRIPT language = javascript> <!-
document.write (2017);
document.write (daysold);
//->
</ SCRIPT>
This can also show your effect
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 China

Post time: 2020-6-1 20:30:01
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java.util.Calendar c = java.util.Calendar.getInstance ();
String strTemp = "";
if (c.get (java.util.Calendar.DAY_OF_YEAR) <10) {
strTemp = "00" + c.get (java.util.Calendar.DAY_OF_YEAR);
} else {
if (c.get (java.util.Calendar.DAY_OF_YEAR) <100) {
strTemp = "0" + c.get (java.util.Calendar.DAY_OF_YEAR);
} else {
strTemp = "" + c.get (java.util.Calendar.DAY_OF_YEAR);
}
The
}
strTemp = c.get (java.util.Calendar.YEAR) + strTemp;
System.out.println (strTemp);
}
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