changed the file structure

Code/Steiner/bookAufgabe3/src/App.java

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+
+// împort java extansions
+import java.util.Scanner;
+
+public class App {
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+
+        System.out.println("Give me a number please:");
+        int number = scan.nextInt();
+        int math = 0;
+        int numberOfDigits = 0;
+        int sum = 0;
+
+        // Number of digits
+        for (int tempNumber = number; tempNumber > 0; tempNumber = tempNumber / 10) {
+            numberOfDigits++;
+        }
+
+        // math the digits-diffrence
+        for (int tempNumber = number; tempNumber > 0; tempNumber = tempNumber / 10) {
+            math = tempNumber % 10;
+            sum += math;
+        }
+
+        System.out.println("Anzahl der Ziffern: " + numberOfDigits);
+        System.out.println("Ziffernsumme: " + sum);
+
+        scan.close();
+    }
+}