## Core Java Lang OOP (Part 2) This module contains articles about Object-oriented programming (OOP) in Java ### Relevant Articles: - [Generic Constructors in Java](https://www.baeldung.com/java-generic-constructors) - [Cannot Reference “X” Before Supertype Constructor Has Been Called](https://www.baeldung.com/java-cannot-reference-x-before-supertype-constructor-error) - [Anonymous Classes in Java](https://www.baeldung.com/java-anonymous-classes) - [Raw Types in Java](https://www.baeldung.com/raw-types-java) - [Marker Interfaces in Java](https://www.baeldung.com/java-marker-interfaces) - [Java equals() and hashCode() Contracts](https://www.baeldung.com/java-equals-hashcode-contracts) - [Immutable Objects in Java](https://www.baeldung.com/java-immutable-object) - [Inheritance and Composition (Is-a vs Has-a relationship) in Java](https://www.baeldung.com/java-inheritance-composition) - [A Guide to Constructors in Java](https://www.baeldung.com/java-constructors) - [Composition, Aggregation, and Association in Java](https://www.baeldung.com/java-composition-aggregation-association) - [Static and Default Methods in Interfaces in Java](https://www.baeldung.com/java-static-default-methods) - [Java Copy Constructor](https://www.baeldung.com/java-copy-constructor) - [Abstract Classes in Java](https://www.baeldung.com/java-abstract-class) - [[<-- Prev]](/core-java-modules/core-java-lang-oop)[[More -->]](/core-java-modules/core-java-lang-oop-3)