changed the file structure

Code/Steiner/arraysTest/src/App.java

@@ -0,0 +1,14 @@
+public class App {
+    public static void main(String[] args) throws Exception {
+        int[] numbersForMath = new int[3];
+        numbersForMath[0] = 24;
+        numbersForMath[1] = 56;
+        int sum = calcSum(numbersForMath[0], numbersForMath[1]);
+        System.out.println(sum);
+        System.out.println(numbersForMath[2]);
+    }
+
+    public static int calcSum(int numberOne, int numberTwo) {
+        return numberOne + numberTwo;
+    }
+}