Digiaccel Interview Questions and Answers

I am comfortable with multiple programming languages including Java, Python, and JavaScript.

• Proficient in Java for backend development

• Experienced in Python for data analysis and machine learning

• Skilled in JavaScript for frontend development

• Familiar with SQL for database management

• Comfortable with C++ for competitive programming

Test cases for login

• Verify successful login with valid credentials

• Verify error message with invalid credentials

• Verify password field is masked

• Verify session timeout after inactivity

• Verify login page is accessible from any page

• Verify login page is not accessible after logout

Object-oriented programming is a programming paradigm that organizes code into objects.

• Encapsulation: bundling data and methods together in a class

• Inheritance: creating new classes from existing ones

• Polymorphism: using a single interface to represent different types

• Abstraction: hiding complex implementation details

• Example: Creating a class 'Car' with properties like 'color' and methods like 'startEngine'

Inheritance, encapsulation, and access modifiers are key concepts in object-oriented programming.

• Inheritance allows a class to inherit properties and behaviors from another class.

• Encapsulation is the concept of bundling data and methods that operate on the data within a single unit.

• Access modifiers control the visibility and accessibility of class members.

• Examples: public, private, protected

• Inheritance example: class Dog extends Animal

• Encapsulation example: private int age; p...read more

Method overloading is when multiple methods have the same name but different parameters. Method overriding is when a subclass provides a specific implementation of a method that is already provided by its superclass.

• Method overloading allows a class to have multiple methods with the same name but different parameters.

• Method overriding occurs in a subclass when a method has the same name and parameters as a method in its superclass.

• Example of method overloading: void print(int...read more

Agile is a project management methodology that emphasizes flexibility, collaboration, and continuous improvement.

• Agile involves breaking down projects into smaller tasks called sprints

• It prioritizes customer feedback and adapting to changes quickly

• Common frameworks include Scrum, Kanban, and Lean

• Daily stand-up meetings and retrospectives are common practices in Agile

Class is a blueprint for creating objects, while object is an instance of a class.

• A class defines the properties and behaviors of objects.

• An object is a specific instance of a class.

• Classes can inherit properties and behaviors from other classes.

• Objects can interact with each other by calling methods on each other.

• Example: Class 'Car' may have properties like 'color' and 'model', while an object of class 'Car' could be 'myCar' with color 'red' and model 'Toyota'.