how to find String contain any alphabetic or numeric characters using java? [duplicate]

This question already has answers here: 开发者_Python百科 Closed 11 years ago.

Possible Duplicate:

Simple way to determine if string is only characters, or to check if string contains any numbers in Java

I want to find if a given String has any alphabetic or numeric characters. How would I do this using java?

Thanks

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String s = "%$a*";
Pattern p = Pattern.compile("[a-zA-Z0-9]");
Matcher m = p.matcher(s);
if (m.find())
  System.out.println("The string \"" + s + "\" contains alphanumerical characters.");

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Take a look at this: http://www.regular-expressions.info/java.html

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There are two convenience methods in the Character class that would help you

• isLetter(...)
• isDigit(...)

All that's required is transforming a String to a character array, and then stepping through the array.