Is there a Java function which retrieves todays name (e.g. Friday) from the OS?

[eLancaster]

I'm writing a GUI program which draws tick for how many days you've run the program consecutively.

So if i first run it on sunday, it will show one tick. If i run it again on monday, two ticks. If i skip a day and run it on wednesday, it will start over and show one tick, because monday and wednesday aren't consecutive.

Yesterday I wrote some 150 lines of code to make three combo boxes: day, month and year so that the user can enter a date and the program calculates what day is today and writes it to a file.

I wanted to do that for the sake of practice. But now i want to know, for the sake of knowledge, could I have used some java function which would automatically retrieve todays day from the Operating System?

[JosAH]

Have a look at the DateFormat class or the SimpleDateFormat class.

kind regards,

Jos

[UJJAL DHAR]

you can use this

GregorianCalendar cal = new GregorianCalendar(); //Create calendar
		int s=cal.get(GregorianCalendar.DAY_OF_WEEK);

S=7 in Saturday. that means week starts with Sunday

[JosAH]

you can use this

GregorianCalendar cal = new GregorianCalendar(); //Create calendar
		int s=cal.get(GregorianCalendar.DAY_OF_WEEK);

S=7 in Saturday. that means week starts with Sunday

Great, and how is the OP supposed to get the name of the week day out of that in a decent way? Better read my first reply.

kind regards,

Jos

[eLancaster]

Thanks Josah, i'll have a look at that.

[UJJAL DHAR]

Great, and how is the OP supposed to get the name of the week day out of that in a decent way? Better read my first reply.

kind regards,

Jos

Yes,your reply is more eficient than that of mine.But mine one will also work if we want.

Something Like this:

switch(s){
Case 1: Sunday;break;
Case 2: Monday;break;
.
.
.
.
Case 7: Saturday;break;
}


Regards
Ujjal

[JosAH]

Yes,your reply is more eficient than that of mine.But mine one will also work if we want.

Something Like this:

switch(s){
Case 1: Sunday;break;
Case 2: Monday;break;
.
.
.
.
Case 7: Saturday;break;
}


Regards
Ujjal

That is a very bad and hackish 'solution' (mind the quotes); for one thing you lose all localization and for another: you don't know whether or not those numbers lie in the range [1 ... 7]. The Calendar class doesn't have symbolic constants for no reason. Don't do what you just did.

kind regards,

Jos