From 8530d01e10b092d47a0b61559b2ca9eb10767011 Mon Sep 17 00:00:00 2001
From: Aleksandar Dudukovic <lesansa00@gmail.com>
Date: Sat, 29 Apr 2017 16:35:57 +0200
Subject: [PATCH] code implemented

---
 marker/src/main/java/App.java        |  7 +++++++
 marker/src/main/java/Guard.java      | 10 ++++++++++
 marker/src/main/java/Permission.java |  7 +++++++
 3 files changed, 24 insertions(+)
 create mode 100644 marker/src/main/java/Guard.java
 create mode 100644 marker/src/main/java/Permission.java

diff --git a/marker/src/main/java/App.java b/marker/src/main/java/App.java
index 233db22c9..ca8c036f7 100644
--- a/marker/src/main/java/App.java
+++ b/marker/src/main/java/App.java
@@ -2,5 +2,12 @@
  * Created by Alexis on 28-Apr-17.
  */
 public class App {
+  public static void main(String[] args) {
+    Guard guard = new Guard();
 
+    if (guard instanceof Permission) {
+      guard.enter();
+    }
+  }
 }
+
diff --git a/marker/src/main/java/Guard.java b/marker/src/main/java/Guard.java
new file mode 100644
index 000000000..93db6b4d7
--- /dev/null
+++ b/marker/src/main/java/Guard.java
@@ -0,0 +1,10 @@
+/**
+ * Created by Alexis on 29-Apr-17.
+ */
+public class Guard implements Permission {
+
+  protected static void enter() {
+    System.out.println("You can enter");
+  }
+
+}
diff --git a/marker/src/main/java/Permission.java b/marker/src/main/java/Permission.java
new file mode 100644
index 000000000..a422e955c
--- /dev/null
+++ b/marker/src/main/java/Permission.java
@@ -0,0 +1,7 @@
+/**
+ * Created by Alexis on 29-Apr-17.
+ * Interface without any methods
+ * Marker interface is based on that assumption
+ */
+public interface Permission {
+}