Check the Date Format.

[dmjpro]

Now a days I take care of sensitive coding rather than completing the code anyhow.
So have a look at this code.
I am trying to check the Date Format.
I am here assuming that the date separator string is either "-" or "/".
First I thought to do it using Regular Expression, but I am new to Regular Expression.
So experts please do some comments here to improve the sensitivity of this code.

[code=java]
Date checkDate(Strin g date)throws Exception {
Date temp_d;
try{
temp_d = d.parse(date);
StringTokenizer st = new StringTokenizer (date,"-");
int m = Integer.parseIn t(st.nextToken( ))-1,
d = Integer.parseIn t(st.nextToken( )),
y = Integer.parseIn t(st.nextToken( ));
c.setTime(temp_ d);
if(m!=c.get(Cal endar.MONTH) || d!=c.get(Calend ar.DATE) || y!=c.get(Calend ar.YEAR)) throw new Exception("Wron g date format");
return temp_d;
}catch(Exceptio n e)
{
throw e;
}
}
[/code]

Please do some comments on it.
Is anything there to improve the logic :-)

Kind regards,
Dmjpro.

[Ozzi]

I would rather use SimpleDateForma t. Here is a very simple example of use.

[CODE=java] //example of String to test
String myDate = "02.03.2007 ";

Date parsed = null;
boolean formatOK = false;

//first correct format
SimpleDateForma t format1 =
new SimpleDateForma t("dd/MM/yyyy");

//second correct format
SimpleDateForma t format2 =
new SimpleDateForma t("dd.MM.yyyy") ;

//if an unarseable exception occurs, we have to try the second format
try {
parsed = format1.parse(m yDate);
formatOK = true;
}catch (Exception e) {
//do whatever
}

//if the String doesn't follows the second format
if(!formatOK){
try {
parsed = format2.parse(m yDate);
formatOK = true;
} catch (ParseException e1) {
//do whatever
}

}

System.out.prin tln(formatOK?"f ormat OK":"format KO");[/CODE]

[dmjpro]

Ooops!
Sorry for some code missing :-)
The appropriate code is ........... "c" and "d" defined as

[code=java]
DateFormat d = new SimpleDateForma t("MM-dd-yyyy");
Calendar c = new GregorianCalend ar();
[/code]

Sorry ... Now it's Ok !
Please do some comments on it.

Kind regards,
Dmjpro.

[dmjpro]

I would rather use SimpleDateForma t. Here is a very simple example of use.

//example of String to test
String myDate = "02.03.2007 ";

Date parsed = null;
boolean formatOK = false;

//first correct format
SimpleDateForma t format1 =
new SimpleDateForma t("dd/MM/yyyy");

//second correct format
SimpleDateForma t format2 =
new SimpleDateForma t("dd.MM.yyyy") ;

//if an unarseable exception occurs, we have to try the second format
try {
parsed = format1.parse(m yDate);
formatOK = true;
}catch (Exception e) {
//do whatever
}

//if the String doesn't follows the second format
if(!formatOK){
try {
parsed = format2.parse(m yDate);
formatOK = true;
} catch (ParseException e1) {
//do whatever
}

}

System.out.prin tln(formatOK?"f ormat OK":"format KO");

I appreciate your coding :-)
But please, try to use Code tags.
Please read posting guidelines before Post.

Debasis Jana

[dmjpro]

I appreciate your coding :-)
But please, try to use Code tags.
Please read posting guidelines before Post.

Debasis Jana

Hey please do comments :-)

Debasis Jana