CGI Group Java Full Stack Developer Interview Questions and Answers

Creating immutable class of orders, sorting orders, finding average of lists of integers.

• Create an immutable class Orders with private final fields and no setter methods.

• Override equals() and hashCode() methods to ensure uniqueness of objects.

• Use Collections.unmodifiableSet() to create a set of orders and Collections.sort() to sort them.

• Iterate through the List of List of String of integers, convert to integers, and calculate average for each list.

Microservices are connected in REST APIs using communication protocols like HTTP, messaging queues, and service discovery.

• Microservices communicate with each other using HTTP requests and responses.

• Messaging queues like RabbitMQ or Kafka can be used for asynchronous communication between microservices.

• Service discovery tools like Eureka or Consul help in locating and connecting to different microservices.

• API Gateway can be used to aggregate multiple microservices into a singl...read more

Spring Cloud is a set of tools and frameworks for building cloud-native applications in Java.

• Spring Cloud provides tools for service discovery, load balancing, configuration management, and more in microservices architecture.

• It includes projects like Eureka for service discovery, Ribbon for client-side load balancing, and Config Server for externalized configuration.

• Spring Cloud integrates with Spring Boot to simplify the development of distributed systems.

• Using Spring Cloud,...read more

Microservices are a software development technique where an application is divided into smaller, independent services that communicate with each other through APIs.

• Microservices are small, independent services that focus on specific business functions.

• Each microservice can be developed, deployed, and scaled independently.

• Microservices communicate with each other through APIs, typically using lightweight protocols like HTTP or messaging queues.

• They promote flexibility, scalabi...read more

Microservices architecture is a design approach where a single application is composed of small, independent services that communicate with each other.

• Each microservice is responsible for a specific business function or capability

• Microservices communicate with each other through APIs

• Each microservice can be developed, deployed, and scaled independently

• Microservices architecture promotes flexibility, scalability, and resilience

• Examples: Netflix, Amazon, Uber