diff --git a/toolkits/codebank/src/main/java/com/ossez/toolkits/codebank/Main.java b/toolkits/codebank/src/main/java/com/ossez/toolkits/codebank/Main.java
index 58638946c4..9e82ce7662 100644
--- a/toolkits/codebank/src/main/java/com/ossez/toolkits/codebank/Main.java
+++ b/toolkits/codebank/src/main/java/com/ossez/toolkits/codebank/Main.java
@@ -12,21 +12,34 @@ import java.util.Properties;
  *
  * @author YuCheng Hu
  */
-public class Main {
+
+interface TestInterface1 {
+    // default method
+    default void show() {
+        System.out.println("Default TestInterface - 1 ");
+    }
+}
+
+interface TestInterface2 {
+    // Default method
+    default void show() {
+        System.out.println("Default TestInterface - 2");
+    }
+}
+
+
+public class Main implements TestInterface1, TestInterface2 {
     private static final Logger logger = LoggerFactory.getLogger(Main.class);
 
-    private static Options options = new Options();
-    private static Properties properties = new Properties();
-
-    private static CommandLine cl = null;
-
-    private static boolean dryRun = false;
-    private static int limit = 0;
-    private static boolean force = false;
-
 
     public static void main(String[] args) {
-
+        new Main().show();
 
     }
+
+    @Override
+    public void show() {
+        TestInterface1.super.show();
+        TestInterface2.super.show();
+    }
 }