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

13 votes1462 runs0 comment

Eric Hostaleryat Dec 3, 2021

6 votes1340 runs0 comment

Eric Hostaleryat Dec 3, 2021

6 votes477 runs0 comment

design pattern

Elieat Mar 28, 2023

4 votes1379 runs0 comment

Eric Hostaleryat Dec 3, 2021

3 votes1331 runs0 comment

Eric Hostaleryat Dec 3, 2021

3 votes1329 runs0 comment

Eric Hostaleryat Dec 3, 2021

3 votes1325 runs1 comment

Eric Hostaleryat Dec 3, 2021

2 votes1411 runs0 comment

design pattern

Eric Hostaleryat Sep 19, 2022

2 votes1359 runs0 comment

Eric Hostaleryat Dec 3, 2021

2 votes1352 runs0 comment

Eric Hostaleryat Mar 13, 2023

2 votes1290 runs1 comment

2 votes176 runs0 comment

polymorphism

encapsulation

Monemat Nov 3, 2023

1 vote1360 runs1 comment

Eric Hostaleryat Dec 3, 2021

1 vote1335 runs0 comment

Eric Hostaleryat Dec 3, 2021

0 vote1336 runs1 comment

Eric Hostaleryat Dec 3, 2021

0 vote1320 runs2 comments

Eric Hostaleryat Mar 20, 2023

0 vote1216 runs0 comment

0 vote359 runs0 comment

encapsulation

-1 vote1339 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);