1 files changed, 46 insertions, 0 deletions
diff --git a/oop/09-polymorphism/CustomerApp.java b/oop/09-polymorphism/CustomerApp.java
new file mode 100644
index 0000000..79e1c31
--- /dev/null
+++ b/oop/09-polymorphism/CustomerApp.java
@@ -0,0 +1,46 @@
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+
+public class CustomerApp {
+
+	/**
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		List list = new LinkedList();
+		
+		Customer c = new Customer(1, "Kamal", "Nugegoda", "123456", "654321");
+		list.add(c);
+
+		c = new Customer(2, "Nimal", "Colombo", "2234343", "2343433");
+		list.add(c);
+
+		c = new PremiumCustomer(1, "Sunil", "Kohuwala", "23443434", "9888234",
+				"a", "Give him whatever he ask");
+		list.add(c);
+		
+		list.add(new Date());
+		
+		Iterator itr = list.iterator();
+		
+		CustomerDetailsFormatter formatter = new CustomerDetailsFormatter();
+		
+		while (itr.hasNext()) {
+			Customer customer = (Customer) itr.next(); // Convert "java.lang.Object" to "Customer"
+			String formattedString = formatter.getFormattedDescription(customer);
+			System.out.println(formattedString);
+		}
+
+		/*
+		Account a1 = new SavingsAccount(); // Coercion (implicit conversion) 
+		a1.accountClassMethod();
+		
+		Account a1 = someMethod();
+		SavingsAccount sa = (SavingsAccount) a1; // Down casting
+		sa.savingsAccountClassMethod();
+		*/
+	}
+}