Deleting/replacing non-alphabetic characters

Question

I'd like to delete any non-anlphabetic characters in a given string, so I figured the following:
for (int i=0; i < aString.length(); i++){          
                    if (!isAlpha(aString.charAt(i))){
                         char c = aString.charAt(i);
                         aString = aString.replace(c,' ');
          }Which doesn't work, and I don't understand why. (Ideally like to delete this char c, but replacing it with whitespace will I think also do)
Anyone any suggestions?

Answer 1

how about using regular expressions?
Here is an example using posix notation:
public class Repl
    public static void main(String args[]){
        String a = "Aghewuz2nknl7kj%\"dsk";
        // here any non alpha char is replaced by a space
        System.out.println(a.replaceAll("[^\\p{Alpha}]", " "));
}{code}