Update README.md

lor6 · web-flow · commit 8bb49f78eb2b · 2019-02-24T20:03:02.000+02:00
diff --git a/patterns/design-patterns/README.md b/patterns/design-patterns/README.md
@@ -18,3 +18,4 @@
 - [Chain of Responsibility Design Pattern in Java](http://www.baeldung.com/chain-of-responsibility-pattern)
 - [The Command Pattern in Java](http://www.baeldung.com/java-command-pattern)
 - [Java Constructors vs Static Factory Methods](https://www.baeldung.com/java-constructors-vs-static-factory-methods)
+- [The Adapter Pattern in Java](https://www.baeldung.com/java-adapter-pattern)
