Interview Questions and Answers

Sorting an array of strings based on a specific criteria.

• Use a sorting algorithm like quicksort or mergesort to sort the array of strings.

• Define a custom comparator function to specify the sorting criteria, such as length or alphabetical order.

• Example: Sorting an array of strings based on length - ['apple', 'banana', 'pear'] becomes ['pear', 'apple', 'banana'].

OOP concepts include encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability for objects to be treated as instances of their parent class or their own class.

• Abstraction: Hiding the implementation details and showing only the necessary features of an object.

The @LoadBalanced annotation is used in Spring Cloud to indicate that a RestTemplate should be load balanced.

• Used to automatically distribute client requests across multiple instances of a service

• Helps in achieving high availability and scalability

• Works in conjunction with Ribbon load balancer in Spring Cloud

Multithreading in Java allows multiple threads to execute concurrently. Spring framework provides support for multithreading through features like TaskExecutor.

• Multithreading in Java allows multiple threads to run concurrently, improving performance and responsiveness.

• Spring framework provides support for multithreading through features like TaskExecutor, which allows for asynchronous execution of tasks.

• Care must be taken to handle synchronization and thread safety issues whe...read more

Scrum master is responsible for facilitating the Scrum process and ensuring the team adheres to Scrum values, practices, and rules.

• Facilitates Scrum events such as daily stand-ups, sprint planning, sprint review, and sprint retrospective

• Removes impediments that hinder the team's progress

• Coaches the team on Agile and Scrum principles

• Ensures the team follows Scrum practices and rules

• Acts as a servant leader to the team

• Helps the team to continuously improve

• Example: A Scrum maste...read more

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

• Agile teams work in short iterations, delivering working software frequently

• Customer collaboration is prioritized over contract negotiation

• Adaptive planning is favored over rigid planning

• Continuous feedback and improvement is encouraged through retrospectives

• Cross-functional teams work together to deliver value

• Agile frameworks include Scrum, Kanban, and XP