Converting char to string?

[hyowza]

Hi,

i've been trying to figure this out, i've read a few related methods and classes in the API and searched google... i don't know if it's possible but i have a method validkey(char key) if a users inputted key is valid the key must be all upper case characters (ASCII value between 65 and 90). I've written a loop which checks if the key is greater '>' than char(65) and less than char(90) then it is valid.

Now here's the problem...when i pass the variable 'char key' through the valid key method the users enters it it and it works but the problem is that it only accepts 1 character (hmmm not a very good password is it? although i do understand the concept of a char being only one character) but what i want is at least 10 character places in uppercase is it possible to have 10 characters in one char declaration?

What i thought is if i converted the passed string to a char this would allow me to check if the key is valid and the user can enter a password which is a string value and then i'll just be able to check if it's valid through the validkey method (it will accept it once it's converted to a char). Any suggestions?

[Belisarius]

A String is really just a wrapper around an array of chars. You can get that array by using toCharArray() on the string. Then you can just run it through your loop and make sure each character is correct.

You could also use the toUpperCase() method to make all the characters uppercase, so your users could type in lower case as well as upper case.