Aggiunta prima versione di DataFormattata

NetBeans Projects/Date/src/date/ProvaData.java

@@ -0,0 +1,22 @@
+package date;
+
+import java.util.ArrayList;
+
+/**
+ *
+ * @author giacomo
+ */
+public class ProvaData {
+    public static void main(String[] args) {
+        ArrayList<DataFormattata> date = new ArrayList<>();
+        
+        date.add(new DataNumerica(5, 7, 2020));
+        date.add(new DataEstesa(5, 7, 2020));
+        date.add(new DataEstesa(10, 7, 2020));
+        
+        System.out.println(date.get(0).stringaFormattata());
+        System.out.println(date.get(1).stringaFormattata());
+        
+        System.out.println(date.get(2).compareTo(date.get(1)));
+    }
+}