Subject: Parse integer out of string 2005-07-07 - By Frans Verhoef
Back
Well, I just tested it, and this ...
int yourInt;
String yourString = "A string that contains number 30 that needs to be
parsed out";
Pattern p = Pattern.compile("\\d+");
Matcher m = p.matcher(yourString);
if(m.find()){
yourInt = Integer.parseInt(yourString.substring(m.start(),m.end()));
System.out.println("yourInt="+yourInt);
}else{
System.out.println("hey, doesn't work!");
// take your action in case no integer found in yourString
}
... works perfectly fine.
Probably something else that does not work in your code.
Cheers
Frans
On Fri, 8 Jul 2005 11:51:05 +1000, Taco wrote:
>?I realize that. My point is it doesn't work..
>
>?See example that I included, and you will see it should have worked
>?but did not, hence the error.
>
>?-- --Original Message-- --
>?From: A mailing list for Java(tm) 2 Platform, Enterprise Edition
>?[mailto:J2EE-INTEREST@(protected)] On Behalf Of Frans Verhoef
>?Sent: Friday, 8 July 2005 11:51 AM To: J2EE-INTEREST@(protected)
>?Subject: Re: Parse integer out of string
>
>?Just make sure that you define yourInt outside the if statement. To
>?be more precise:
>
>?int yourInt;
>?if(m.find()){
>?int yourInt >?Integer.parseInt(yourString.substring(m.start(),m.end()));
}else{
>?// take your action in case no integer found in yourString }
>
>?On Fri, 8 Jul 2005 11:21:22 +1000, Taco wrote:
>>?Thanks that's sort of what I put together as well.
>>
>>?Using your example:
>>
>>?String yourString = "A string that contains number 30 that needs
>>?to be parsed out"; Pattern p = Pattern.compile("\\d+"); Matcher m
>>?= p.matcher(yourString); if(m.find()) { int yourInt >>?Integer.parseInt
(yourString.substring(m.start(), m.end())); }
>>?System.out.println("result: " + yourInt);
>>
>>?I got:
>>
>>?java.lang.Error: Unresolved compilation problem:
>>?yourInt cannot be resolved
>>
>>?at SSLTransportLayer08.getResponse(SSLTransportLayer08.java:149)
>>?at SSLTransportLayer08.main(SSLTransportLayer08.java:74)
>>
>>?Which means it never found anything.. ???
>>?I'm puzzled..
>>
>>?-- --Original Message-- --
>>?From: A mailing list for Java(tm) 2 Platform, Enterprise Edition
>>?[mailto:J2EE-INTEREST@(protected)] On Behalf Of Frans Verhoef
>>?Sent: Friday, 8 July 2005 11:18 AM To: J2EE-INTEREST@(protected)
>>?Subject: Re: Parse integer out of string
>>
>>?Actually not J2EE, but here we go:
>>
>>?String yourString = "A string that contains number 30 that needs
>>?to be parsed out"; Pattern p = Pattern.compile("\\d+"); Matcher m
>>?= p.matcher(yourString); if(m.find()){
>>?int yourInt = Integer.parseInt(yourString.substring(m.start(),
>>?m.end())); }
>>
>>?Cheers
>>?Frans
>>
>>?=====================================================================>>? ===
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>>?general help, send email to listserv@(protected) and include in
>>?the body of the message "help".
>>
>
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