| Pillar | Meaning | In Java |
|---|
| Encapsulation | Hide data, give controlled access | private fields with getters and setters |
| Inheritance | A class gets the features of another | extends |
| Polymorphism | One call, many behaviors | Overriding and overloading |
| Abstraction | Show only what is needed, hide the details | Abstract classes and interfaces |
Read the chapters: Encapsulation, Inheritance, Polymorphism and Abstract Classes.
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