Describe the difference between an abstract class and an interface.
Answer:
- Abstract Class: An abstract class is a class that cannot be instantiated directly and may contain abstract methods (methods without implementation). It serves as a blueprint for subclasses to inherit attributes and methods while providing common behavior. Subclasses must implement abstract methods to become concrete classes.
- Interface: An interface is a contract that defines a set of method signatures without specifying their implementations. It defines a protocol for communication between classes by declaring the methods they must implement. Unlike abstract classes, interfaces cannot contain concrete methods or instance variables.
Software Developer Interview Questions
Software developer interview questions can cover a wide range of topics, depending on the specific role, company, and level of experience being targeted. The software developer interview questions aim to assess a candidate’s technical skills, problem-solving abilities, communication skills, and fit for the role and the company.
Table of Content
- Interview Questions for Internship and Fresher Level
- Interview Questions for Software Development Engineer SDE 1 level
- Interview Questions for Software Development Engineer SDE 2 level
- Interview Questions for Software Development Engineer SDE 3 level