Update README.md

johnA1331 · web-flow · commit 54d21459f409 · 2021-09-22T22:46:39.000+08:00
diff --git a/core-java-modules/core-java-lang-4/README.md b/core-java-modules/core-java-lang-4/README.md
@@ -8,3 +8,4 @@ This module contains articles about core features in the Java language
 - [Java Objects.hash() vs Objects.hashCode()](https://www.baeldung.com/java-objects-hash-vs-objects-hashcode)
 - [Referencing a Method in Javadoc Comments](https://www.baeldung.com/java-method-in-javadoc)
 - [Tiered Compilation in JVM](https://www.baeldung.com/jvm-tiered-compilation)
+- [Fixing the “Declared package does not match the expected package” Error](https://www.baeldung.com/java-declared-expected-package-error)
