newbie: match non numeric non whitespace value

[usgog]

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?

 

[John]

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/api/java/lang/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.

 

[usgog]

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/api/java/lang/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.

 

[brian.r.williams]

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

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?

 

[usgog]

(e-mail address removed) 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/api/java/lang/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.

 

[Lew]

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