| Definition |
A concept that hides complex implementation details and shows only essential features. |
A contract that defines a set of methods that a class must implement. |
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| Usage |
Used to reduce code complexity and increase reusability. |
Used to define a common protocol for classes. |
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| Methods |
Can have both defined and undefined methods. |
Only contains method signatures; no implementation. |
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| Inheritance |
A class can inherit from only one abstract class. |
A class can implement multiple interfaces. |
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| Access Modifiers |
Can have access modifiers like private, protected, and public. |
Methods in an interface are implicitly public. |
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| Constructor |
Can have constructors. |
Cannot have constructors. |
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