Update README.md

johnA1331 · web-flow · commit 0dfe5d1412ea · 2020-10-21T11:41:32.000+08:00
diff --git a/core-java-modules/core-java-lang-3/README.md b/core-java-modules/core-java-lang-3/README.md
@@ -7,4 +7,5 @@ This module contains articles about core features in the Java language
 - [When are Static Variables Initialized in Java?](https://www.baeldung.com/java-static-variables-initialization)
 - [Checking if a Class Exists in Java](https://www.baeldung.com/java-check-class-exists)
 - [The Difference Between a.getClass() and A.class in Java](https://www.baeldung.com/java-getclass-vs-class)
+- [Constants in Java: Patterns and Anti-Patterns](https://www.baeldung.com/java-constants-good-practices)
 - [[<-- Prev]](/core-java-modules/core-java-lang-2)
