How do i check for special characters

[Anil Verghese]

Hi,

How do i check whether a string has special characters or not


Anil

[Campbell Ritchie]

More of a beginners' question.
What do you mean by special characters?
Suggest you split the String into a char[] array and use the methods of the Character class on the individual chars.

boolean specialFound = false;
for(int i = 0; !specialFound && i < charArray.length; i++)
{
   specialFound = Character.whicheverSpecialMethodYouAreUsing(charArray[i]);
}//end for

[Peter Chase]

The character-by-character approach will work.

An alternative would be to use a regular expression, via java.util.regex.Pattern. If you look up the API doc for Pattern, you will see that there are a wide variety of character classes on which you can match.