L&T Technology Services C Developer Interview Questions, Process, and Tips for Experienced

A class for debit, credit and balance check functionalities

• Create a class with member variables for balance

• Add member functions for debit, credit and balance check

• Ensure proper validation and error handling

• Consider using exception handling for errors

Abstract design pattern is a way to define a blueprint for a group of objects with common characteristics.

• It allows creating objects without specifying their concrete classes.

• It promotes loose coupling between classes.

• It is implemented using abstract classes and interfaces.

• Example: Shape is an abstract class and Circle, Square, Triangle are its concrete subclasses.

• Example: JDBC API uses abstract classes and interfaces ...read more

To add an external API to a project, you need to first obtain the API documentation and credentials.

• Obtain API documentation and credentials

• Integrate API into project using appropriate libraries or frameworks

• Test API functionality and handle errors appropriately