developer-roadmap/roadmaps/java/content/abstraction@qdA6bK9ZkP8p0_NH_wMuj.md

Abstraction

The abstract keyword in Java is used to declare a class or a method that cannot be instantiated directly or must be implemented by subclasses, respectively. It is a key part of Java's abstraction mechanism, allowing developers to define abstract classes and methods that provide a blueprint for other classes.

Visit the following resources to learn more:

• @article@Java Abstract Classes
• @article@Java Interfaces vs. Abstract Classes