## Core Java Lang (Part 4)

This module contains articles about core features in the Java language

- [The Java final Keyword – Impact on Performance](https://www.baeldung.com/java-final-performance)
- [The package-info.java File](https://www.baeldung.com/java-package-info)
- [What are Compile-time Constants in Java?](https://www.baeldung.com/java-compile-time-constants)
- [Java Objects.hash() vs Objects.hashCode()](https://www.baeldung.com/java-objects-hash-vs-objects-hashcode)
