Tokenizing Problem...

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9GB - 19 Jun 2006 20:43 GMT

Wait! I know how to tokenize a string, but I need it very frequently,
lets say after every word. I have a sequence like: "4 3,3 2.2 3|0(4)"
and I have to extract integers out of them. I can't be arsed to type
StringTokenizer() again and again for every token, is there anyway to
make life a little bit easier?

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Eric Sosman - 19 Jun 2006 21:07 GMT

9GB wrote On 06/19/06 15:43,:

> Wait! I know how to tokenize a string, but I need it very frequently,
> lets say after every word. I have a sequence like: "4 3,3 2.2 3|0(4)"
> and I have to extract integers out of them. I can't be arsed to type
> StringTokenizer() again and again for every token, is there anyway to
> make life a little bit easier?

String whole = "4 3,3 2.2 3|0(4)";
String[] pieces = whole.split("\\D+");

If you chop up a lot of different Strings with the
same regular expression, consider compiling the regex to
a Pattern just once and using it many times.

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Eric.Sosman@sun.com

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9GB - 20 Jun 2006 09:29 GMT

> String whole = "4 3,3 2.2 3|0(4)";
> String[] pieces = whole.split("\\D+");
>
> If you chop up a lot of different Strings with the
> same regular expression, consider compiling the regex to
> a Pattern just once and using it many times.

Whats that ??? How does that works? I mean what's D in that pattern?

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Hendrik Maryns - 20 Jun 2006 09:48 GMT

9GB schreef:

>> String whole = "4 3,3 2.2 3|0(4)";
>> String[] pieces = whole.split("\\D+");
[quoted text clipped - 4 lines]
>
> Whats that ??? How does that works? I mean what's D in that pattern?

STFW: google java regex

Amongst others:
http://java.sun.com/j2se/1.4.2/docs/api/java/util/regex/Pattern.html

H.

- --
Hendrik Maryns

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Thomas Fritsch - 20 Jun 2006 10:19 GMT

9GB schrieb:

>> String whole = "4 3,3 2.2 3|0(4)";
>> String[] pieces = whole.split("\\D+");
[quoted text clipped - 4 lines]
>
> Whats that ??? How does that works? I mean what's D in that pattern?

Read the API doc of the String's split(String) method
<http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html#split(java.lang.String)>
and follow the links (concerning regular expressions) given there.

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Thomas

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Eric Sosman - 20 Jun 2006 14:45 GMT

9GB wrote On 06/20/06 04:29,:

>> String whole = "4 3,3 2.2 3|0(4)";
>> String[] pieces = whole.split("\\D+");
[quoted text clipped - 4 lines]
>
> Whats that ??? How does that works? I mean what's D in that pattern?

"Use the For-- er, the Javadoc, Luke."

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Eric.Sosman@sun.com

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