«

I want to detect whether the java String has any non-numeric and non-
whitespace char. For example,
"12 34" returns false
"1234" returns false
"12a3" returns true
" a 12 3" returns true

Can I use [^0-9\\s]? If not, what does it mean?

wrote:
> I want to detect whether the java String has any non-numeric and non-
> whitespace char. For example,
> "12 34" returns false
> "1234" returns false
> "12a3" returns true
> " a 12 3" returns true
>
> Can I use [^0-9\\s]? If not, what does it mean?
>

Here, try looking for something in the methods of the String class

http://java.sun.com/j2se/1.5.0/docs/...ng/String.html

I'm thinking you should be able to use the "matches" method to do what
you want if you can figure out the regular expression business.

On Feb 7, 7:30 pm, John <printdude1...@gmail.com> wrote:
> u...@yahoo.com wrote:
> > I want to detect whether the java String has any non-numeric and non-
> > whitespace char. For example,
> > "12 34" returns false
> > "1234" returns false
> > "12a3" returns true
> > " a 12 3" returns true
>
> > Can I use [^0-9\\s]? If not, what does it mean?
>
> Here, try looking for something in the methods of the String class
>
> http://java.sun.com/j2se/1.5.0/docs/...ng/String.html
>
> I'm thinking you should be able to use the "matches" method to do what
> you want if you can figure out the regular expression business.

Thanks for the reply. The regular expression business is the thing
that I am asking for help.

On Feb 8, 2:31 pm, "u...@yahoo.com" <u...@yahoo.com> wrote:
> On Feb 7, 7:30 pm, John <printdude1...@gmail.com> wrote:
>
>
>
>
>
> > u...@yahoo.com wrote:
> > > I want to detect whether the java String has any non-numeric and non-
> > > whitespace char. For example,
> > > "12 34" returns false
> > > "1234" returns false
> > > "12a3" returns true
> > > " a 12 3" returns true
>
> > > Can I use [^0-9\\s]? If not, what does it mean?
>
> > Here, try looking for something in the methods of the String class
>
> >http://java.sun.com/j2se/1.5.0/docs/...ng/String.html
>
> > I'm thinking you should be able to use the "matches" method to do what
> > you want if you can figure out the regular expression business.
>
> Thanks for the reply. The regular expression business is the thing
> that I am asking for help. - Hide quoted text -
>
> - Show quoted text -

So basically you want to know if there are any alpha characters in the
string. So, why not just use ([a-zA-Z]) in the regex expression?

On Feb 8, 1:35 pm, "brian.r.willi...@gmail.com"
<brian.r.willi...@gmail.com> wrote:
> On Feb 8, 2:31 pm, "u...@yahoo.com" <u...@yahoo.com> wrote:
>
>
>
> > On Feb 7, 7:30 pm, John <printdude1...@gmail.com> wrote:
>
> > > u...@yahoo.com wrote:
> > > > I want to detect whether the java String has any non-numeric and non-
> > > > whitespace char. For example,
> > > > "12 34" returns false
> > > > "1234" returns false
> > > > "12a3" returns true
> > > > " a 12 3" returns true
>
> > > > Can I use [^0-9\\s]? If not, what does it mean?
>
> > > Here, try looking for something in the methods of the String class
>
> > >http://java.sun.com/j2se/1.5.0/docs/...ng/String.html
>
> > > I'm thinking you should be able to use the "matches" method to do what
> > > you want if you can figure out the regular expression business.
>
> > Thanks for the reply. The regular expression business is the thing
> > that I am asking for help. - Hide quoted text -
>
> > - Show quoted text -
>
> So basically you want to know if there are any alpha characters in the
> string. So, why not just use ([a-zA-Z]) in the regex expression?

I think [a-zA-Z] won't cover i18n characters.

wrote:
>>>>> I want to detect whether the java String has any non-numeric and non-
>>>>> whitespace char. For example,
>>>>> "12 34" returns false
>>>>> "1234" returns false
>>>>> "12a3" returns true
>>>>> " a 12 3" returns true
>>>>> Can I use [^0-9\\s]? If not, what does it mean?

> I think [a-zA-Z] won't cover i18n characters.

Try "\\p{L}". Read
<http://java.sun.com/javase/6/docs/api/java/util/regex/Pattern.html>

Study it.

- Lew