IBM Consulting Application Developer Interview Questions and Answers

During a project, I faced a significant challenge with integrating a third-party API that had inconsistent documentation and frequent changes.

• Inconsistent Documentation: The API documentation was often outdated, leading to confusion about the correct endpoints and parameters.

• Frequent Changes: The API provider made changes without notice, causing our application to break unexpectedly, which required quick fixes.

• Debuggin...read more

lateinit is a keyword in Kotlin used to declare a non-null property that is initialized later.

• lateinit is used when we want to delay the initialization of a property

• It can only be used with mutable properties of non-null types

• The property must be initialized before accessing it, otherwise it will throw an exception

To create two screens simultaneously, use a multi-threading approach.

• Use multi-threading to run two separate threads, each responsible for creating and managing a screen.

• Ensure proper synchronization between the threads to avoid conflicts and ensure smooth operation.

• Use appropriate APIs or frameworks provided by the platform or programming language to create and display the screens.

• Example: In Android, you can create t...read more

Retrofit is a modern approach to API integration, providing a more efficient and convenient way compared to traditional methods.

• Retrofit is a type-safe HTTP client for Android and Java applications.

• It simplifies the process of making network requests and handling responses.

• Retrofit uses annotations to define API endpoints and request parameters.

• It automatically converts JSON responses to Java objects using Gson or othe...read more

A PL/SQL cursor is a pointer used to fetch and manipulate data from a result set in a database.

• PL/SQL cursor is used to retrieve data row by row from a result set.

• It allows for processing individual rows returned by a query.

• Cursors are used in loops to iterate through the result set.

• Example: DECLARE cursor_name CURSOR FOR SELECT column1, column2 FROM table_name;