Receive Information (Number) From User And Calculates Its Total

I wanted to write a simple code that receives information from the user (double-digit number and above) and calculates it's numbers.

For instance- The user wrote a number- 234, the software will return the number 9 (2+3+4 = 9).

Tried to use a loop for that, but I got stuck since I didn't know what to write.

This is what I've wrote so far

Java Code:

import java.util.Scanner;
public class Calculate {
public static void main(String[] args) {
System.out.println("Please type a number larger than 9");
Scanner type = new Scanner(System.in);
String number1 = type.nextLine();

for( int i = 0; i < number1.length(); i++ ){
int calculate = number1.charAt(i);
}
}
} mh_sh_highlight_all('java');