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Understanding the Differences Between Abstract Classes and Interfaces in Java

In Java programming, it is essential to distinguish between abstract classes and interfaces, as they serve different purposes in designing and implementing classes. The focus keyword for this topic is "abstract classes vs interfaces in Java."

Abstract Classes

Abstract classes in Java are designed to be extended by subclasses. They can contain both abstract and concrete methods. A class can only extend one abstract class due to Java's single inheritance nature.

Interfaces

Interfaces, on the other hand, specify a set of methods that a class must implement. In Java, a class can implement multiple interfaces, allowing for flexibility in designing classes that need to adhere to various contracts.

Differences Summary

• Abstract classes can have a mix of abstract and concrete methods, while interfaces only contain method signatures.
• Java supports single inheritance for abstract classes, but a class can implement multiple interfaces.
• Abstract classes are used to define common behavior for subclasses, while interfaces define a contract that classes must follow.

Understanding these distinctions between abstract classes and interfaces in Java is crucial for designing efficient and maintainable class hierarchies.

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