Re: password policy

[Joe Cheung]

Dear all,

How can I implement my own password policy that the password must consists of at least one character (a-z or A-Z) and one numeric value (0-9) in Java?

Thanks!
Joe

[Tom Tremain]

A good place to start would be to read the javadocs for the the isDigit(char ch) and isLetter(char ch) static methods of the java.lang.Character class.

Using these methods inside of a loop should enable you to verify that a password meets the security requirements defined in your post.

[Stuart Gray]

String str = "foo101";
boolean digits = false;
boolean letter = false;
char[] c = str.toCharArray();
 
for (int i = 0; i < c.length; i++) {
   if (Char.isLetter(c[i]) {
      letter = true;
   } else if (Char.isDigit(c[i]) {
      digit = true;
   }
}

[Yosi Hendarsjah]

You can use regular expression.