Counting how many letters and numbers

[broception]

I'm trying to count how many letters and how many numbers are in a user input string. For example:
Number01: should display
2 numbers
6 letters

So far, I've counted how many letters there are but I don't know how to add numbers to the string.

import javax.swing.JOptionPane;
 
public class morePractice {
 
    public static void main(String[] args) {
        String str;
        int num1;
        int total=0;
        char letter;
        int totalNum=0;
 
        str=JOptionPane.showInputDialog(null,"Enter phrase");
 
        for(int i=0;i<str.length();i++){
            letter=str.charAt(i);
            if(letter>='A'&&letter<='Z' || letter>='a'&&letter<='z'){
                total++;
            }
 
        }
        JOptionPane.showMessageDialog(null,"There are " + total + " letters");
 
    }
 
}
 

[Rabbit]

Do the same thing, except for the characters '0' to '9'