public class CheckChValue {  // Class name
public static void main(String[] args) { // class main
    String name = "admin"; // String to check it's value
    int nameLenght = name.length(); // length of the string used for the loop
    for(int i = 0; i < nameLenght ; i++){   // while counting characters if less than the length add one        
        char character = name.charAt(i); // start on the first character
        int ascii = (int) character; //convert the first character
        System.out.println(character+" = "+ ascii); // print the character and it's value in ascii
    }
}
}
output :
a = 97
d = 100
m = 109
i = 105
n = 110