uppercase and lowercase please help

[cuziwow]

i want to write a program that defines whether the input letter is upper case or lower case. how do i do that, I think i need 2 arrays, one with all upper case and one with all lowercase?

[Cemi]

If you have a char variable.

Character.isUpperCase(yourChar);

Is going to equal true, and if it's lower case it will equal false :)

[cuziwow]

Thanks a lot lot lot :D

[blazinhieu]

How can i make the program to tell the user what letter of the alphabet it is:
ex: " k is the 11th letter in the alphabet"
here is the code that i got so far

import javax.swing.*;
public class Ncom{
String Inputnum;
char num;
int i;
public static void main(String[] args){
new Ncom();
}
public Ncom(){
char []upper = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
char []lower = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
   
Inputnum=JOptionPane.showInputDialog("Enter a letter");
num= Inputnum.charAt(0);
if (Character.isUpperCase(num))

System.out.println(num+" is Upper case");
else
System.out.println(num+" is Lower case");


  

}
}

PLEASE HELP ME just this 1 more thing

[cuziwow]

never mind i got it :D