abstract-class Archives - Page 2 of 2

How should I have explained the difference between an Interface and an Abstract class?

In one of my interviews, I have been asked to explain the difference between an Interface and an Abstract class. Here’s my response: ...

May 2, 2022
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Difference between abstract class and interface in Python

What is the difference between abstract class and interface in Python? 8 s 8 What you’ll see sometimes is the following: class Abstract1: ...

April 30, 2022
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When to use: Java 8+ interface default method, vs. abstract method

Java 8 allows for default implementation of methods in interfaces called Default Methods. I am confused between when would I use that sort ...

April 29, 2022
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Why can’t static methods be abstract in Java?

The question is in Java why can’t I define an abstract static method? for example abstract class foo { abstract void bar( ); ...

April 29, 2022
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Can an abstract class have a constructor?

Can an abstract class have a constructor? If so, how can it be used and for what purposes? 22 s 22 Yes, an ...

April 27, 2022
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How do you declare an interface in C++?

How do I setup a class that represents an interface? Is this just an abstract base class? 17 s 17 To expand on ...

April 19, 2022
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Interface vs Abstract Class (general OO)

I have had recently two telephone interviews where I’ve been asked about the differences between an Interface and an Abstract class. I have ...

April 12, 2022
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What is the difference between an interface and abstract class?

What exactly is the difference between an interface and an abstract class? 3 38

April 10, 2022
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Can an abstract class have a constructor?

Yes, an abstract class can have a constructor. Consider this: abstract class Product { int multiplyBy; public Product( int multiplyBy ) { this.multiplyBy ...

April 7, 2022
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Class ‘Room’ is abstract; cannot be instantiated

April 5, 2022
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