changed the file structure

Code/Steiner/Boolean/src/App.java

@@ -0,0 +1,15 @@
+public class App {
+    public static void main(String[] args) throws Exception {
+
+        boolean a = 1 == 1;
+        boolean b = 1 != 2;
+        boolean c = a == b;
+        boolean d = c != b;
+
+        if (d) {
+            System.out.println("d  is true see: " + d);
+        } else {
+            System.out.println("d is false see: " + d);
+        }
+    }
+}