Abstract classes and interfaces are plentiful in Java code, and even in the Java Development Kit (JDK) itself. Each code element serves a fundamental purpose: Many developers believe that ...

Sealed classes work together with records and pattern matching to support a more data-centric form of programming ... (See Effective Java, "Prefer interfaces to abstract classes".) ...

Imagine you are an expert object-oriented Java developer who meticulously crafts code the way an artist cares for their masterpiece. You believe clean code is an absolute necessity. Classes with clear ...