Data-Oriented Programming (DOP) focuses on decreasing the complexity of the Object-Oriented Programming (OOP) application systems by rethinking data, i.e., separating data and code. DOP divides the system into two core components (Data entities and Code Module), where you can think about each separately. So in this blog, we will cover OOP and its complexity, data-oriented programming, how we can separate code from data in Java, and ways to represent immutable data in Java and data with records.