<ul><li>Abstraction in Java is a fundamental concept in object-oriented programming (OOP) that hides implementation details and only shows essential features.</li><li>Abstract classes may have methods without implementation and must be implemented by subclasses. By abstracting functionality, changes in the implementation do not affect the code that depends on the abstraction.</li><li>Java provides two ways to implement abstraction: Abstract Classes (Partial Abstraction) and Interface (100% Abstraction).</li><li>Interfaces fulfill two goals: They allow the programmer to be more abstract when referencing objects and enable multiple inheritance in Java.</li></ul>

DAY : 27 Abstract and Interface in Java – Simplified

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