import flanagan.io.KeyboardInput; import java.math.BigInteger; public class quersumme { public static void main(String arg[]) { KeyboardInput kb = new KeyboardInput(); String decimalNumber = kb.readLine("decimal number ="); int sum = 0; String currentDigit; for (int i = 0; i < decimalNumber.length(); i++) { currentDigit = decimalNumber.substring(i, i+1); System.out.printf(currentDigit + " "); sum += Integer.parseInt(currentDigit); } System.out.printf("\nquersumme = %d\n", sum); } }