Checking for alphabets and digits

Question

I am reading a stream of characters and want to filter out if the character read is a letter(A-Z) or a number(0-9). I tried to use isLetter() and isDigit() functions of the Character class but it does also treats some other characters(based on unicode i think) other than A-Z as Letters and digits. Is there any way to test exactly alphbets(A-Z) and between ( 0-9).
its urgent...
thanks in advance.
vinod

Answer 1

you can simply use it without the charcater class and its methods... like this..
if( (inChar >= 'A' && inChar <= 'Z') || (inChar >= 'a' && inChar <= 'z') ) {
      // do the stuff for letters..     
if( inChar >= '1' && inChar <= '0') {
     // do stuff for digit...
  }