BAEL-2755 - Introduction to the Null Object Pattern

patterns/design-patterns/src/main/java/com/baeldung/nullobject/NullRouter.java

@@ -0,0 +1,10 @@
+package com.baeldung.nullobject;
+
+public class NullRouter implements Router {
+
+    @Override
+    public void route(Message msg) {
+        // routing to /dev/null
+    }
+
+}