## Core Java Lang OOP This module contains articles about Object-oriented programming (OOP) in Java ### Relevant Articles: - [Guide to hashCode() in Java](https://www.baeldung.com/java-hashcode) - [A Guide to the Static Keyword in Java](https://www.baeldung.com/java-static) - [Polymorphism in Java](https://www.baeldung.com/java-polymorphism) - [Method Overloading and Overriding in Java](https://www.baeldung.com/java-method-overload-override) - [How to Make a Deep Copy of an Object in Java](https://www.baeldung.com/java-deep-copy) - [Guide to Inheritance in Java](https://www.baeldung.com/java-inheritance) - [Object Type Casting in Java](https://www.baeldung.com/java-type-casting) - [The “final” Keyword in Java](https://www.baeldung.com/java-final) - [Type Erasure in Java Explained](https://www.baeldung.com/java-type-erasure) - [Variable and Method Hiding in Java](https://www.baeldung.com/java-variable-method-hiding) - [[More -->]](/core-java-modules/core-java-lang-oop-2)