Special characters in Java

[rahulJ james]

How do I validate a string to verify whether it can have only Alphabets + numbers + special characters and not only numbers and not only special characters..

I tried with the regec pattern. I am able to validate for only numbers but not for others. anyone advise

[Campbell Ritchie]

Please tell us which regex you were using.

[rahulJ james]

java.util.regex.pattern and declared something like this..
private static final Pattern objRegexAlphanumericPattern = Pattern.compile("^[ A-Za-z0-9 ]+$");

[Henry Wong]

The regex you are using only specifies letters and numbers -- which leads to the next question.... what "special" characters are you trying to specify.

Henry

[Campbell Ritchie]

You will have to check with the Pattern class or the Java™ Tutorials, but I think that will match the 26 letters (upper-case and lower-case) used in English and ten digits and ordinary spaces, but no punctuation or accented letters, for the whole of a line from the ^ to the $.

And Henry has beaten me to it