Top "Oop" questions

What is the difference between dynamic and static polymorphism in Java?

Can anyone provide a simple example that explains the difference between Dynamic and Static polymorphism in Java?

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Difference between Inheritance and Composition

Are Composition and Inheritance the same? If I want to implement the composition pattern, how can I do that in …

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Usage of __slots__?

What is the purpose of __slots__ in Python — especially with respect to when I would want to use it, and …

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What are public, private and protected in object oriented programming?

What are public, private and protected in object oriented programming?

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Class vs. static method in JavaScript

I know this will work: function Foo() {}; Foo.prototype.talk = function () { alert('hello~\n'); }; var a = new Foo; a.talk(); // …

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When should I use "this" in a class?

I know that this refers to a current object. But I do not know when I really need to use …

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Clone Object without reference javascript

I have a big object with much data. And i want to clone this in other variable. When i set …

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What does the variable $this mean in PHP?

I see the variable $this in PHP all the time and I have no idea what it's used for. I've …

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Abstract class in Java

What is an "abstract class" in Java?

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Simple way to understand Encapsulation and Abstraction

Learning OOP concepts especially interested to understand Abstraction and Encapsulation in depth. Checked out the below already Abstraction VS Information …

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