19 interview questions on Object Oriented Programming for developers (2024)

13 votes1461 runs0 comment

Eric Hostaleryat Dec 3, 2021

6 votes1339 runs0 comment

Eric Hostaleryat Dec 3, 2021

6 votes476 runs0 comment

design pattern

Elieat Mar 28, 2023

4 votes1378 runs0 comment

Eric Hostaleryat Dec 3, 2021

3 votes1330 runs0 comment

Eric Hostaleryat Dec 3, 2021

3 votes1328 runs0 comment

Eric Hostaleryat Dec 3, 2021

3 votes1324 runs1 comment

Eric Hostaleryat Dec 3, 2021

2 votes1408 runs0 comment

design pattern

Eric Hostaleryat Sep 19, 2022

2 votes1358 runs0 comment

Eric Hostaleryat Dec 3, 2021

2 votes1351 runs0 comment

Eric Hostaleryat Mar 13, 2023

2 votes1289 runs1 comment

2 votes175 runs0 comment

polymorphism

encapsulation

Monemat Nov 3, 2023

1 vote1359 runs1 comment

Eric Hostaleryat Dec 3, 2021

1 vote1334 runs0 comment

Eric Hostaleryat Dec 3, 2021

0 vote1335 runs1 comment

Eric Hostaleryat Dec 3, 2021

0 vote1319 runs2 comments

Eric Hostaleryat Mar 20, 2023

0 vote1215 runs0 comment

0 vote358 runs0 comment

encapsulation

-1 vote1338 runs0 comment

Eric Hostaleryat Dec 3, 2021

19 interview questions on Object Oriented Programmingfor developers (2024)

Test your technical skills before an interview of Object Oriented Programming with 19 corrected questions. Beginner, Intermediate or Expert level.

19 interview questions on Object Oriented Programmingfor developers (2024)

Test your technical skills before an interview of Object Oriented Programming with 19 corrected questions. Beginner, Intermediate or Expert level.

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);

Can we extend an abstract class in Java?

You need to develop a class for which there should be only one instance throughout your application. Which design pattern should you use for this?

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);

Implement the registration method on class A in a virtual way,Override the registration method on classes A1 and A2 when implementing these classes

Which design pattern allows to dynamically add responsibilities to an object?

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);

Implement the interface IEmailFormatter for the classes Person, Company, and ListOfPerson, which has a method GetEmailContent()

Can an interface inherit from another interface?

Inheritance, polymorphism and encapsulation

What is the default value of a field in a class in Java?

What are the public methods of the class `Person`?

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);

How to call a method from a parent class in a child class in PHP

Is an interface abstract?

Hiding complexity can be termed as Encapsulation

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);