Backend Developer Interview Questions- The demand for backend developers is rising. According to US Bureau of Labor Statistics data, the need for backend web developers will increase by 13% by 2028. This indicates that they will have a successful future ahead of them.
Therefore, if you choose this professional route, you won’t have any trouble finding employment. However, given the volume of experts looking for backend developer positions, you must differentiate yourself from the competition during the Backend Developer Interview Questions.
We requested Digitalized Apex Technology Anywhere, to share technical Backend Developer Interview Questions with us, along with the questions he was given, to help you prepare for backend developer interview questions. Despite the fact that the following queries are particular to backend developer roles Backend developers with different backgrounds, such as those being hired for Node.js developers positions, will find it valuable because Java is the primary competence.
Also read more, Best Guide to a career in Backend Developer
A Backend Developer Interview Questions: What to expect
You should be aware that backend software engineer interview questions are frequently used in technical interviews by companies like Digitalized Apex Technology Anywhere to evaluate your technical expertise, degree of experience, and soft skills.
The interviewer will grill you on your experience and background with general and backend development-specific questions. Typically, general inquiries are made to learn more about your educational background and work experience. These introductory questions are frequently used in web development interviews and touch on topics like your coding talents and the programming language you are most familiar with.
After these inquiries, there will be a 15–20 minute practical coding task, followed by a soft skills assessment.
1. What is object-oriented programming, first of all?
In object-oriented programming (OOP), the data and the accompanying processing usually referred to as methods, are described as independent entities. These things are referred to as “objects.” OOP entails portraying a system as a group of different objects, each of which stands for a different system component.
Today’s common OOP languages give programmers a systematic set of guidelines and ideas for generating and managing objects. Inheritance, polymorphism, encapsulation, and data abstraction are the four cornerstones of OOP.
2. What is a constructor, and secondly?
An exclusive Java method used to initialize objects is called a constructor. When an object belonging to a class is formed, it is called. The class’s name is the constructor’s name. Additionally, it has a method-like syntactic structure. Constructors lack an explicit return type, though.
3. What kinds of constructors are there?
No Argument Constructors, Default Constructors, and Parameterized Constructors are the three primary categories of constructors.
4. Why is Java unable to support multiple inheritances?
Due to the ambiguity issue, multiple inheritances are not supported in Java. Java does not enable multiple inheritances either, which helps to make the language less complex and simpler. Multiple inheritances are the process by which one class, such as class B, extends more than another class, such as class A and class C. The diamond dilemma is one instance of a difficulty that arises with multiple inheritances.
5. What exactly is a thread?
a thread is a separate way for software code to be executed. Java applications can be made faster and more responsive by using threads, which can do numerous tasks at once.