RealPage Fullstack Java Developer Interview Questions, Process, and Tips

Use a sorting algorithm to sort an array of strings representing names.

• Use a sorting algorithm like bubble sort, selection sort, or merge sort to sort the array of strings.

• Compare each pair of strings and swap them if they are in the wrong order.

• Repeat this process until the array is sorted.

• Example: ['John', 'Alice', 'Bob'] -> ['Alice', 'Bob', 'John']

To connect to a database in Spring Boot, you need to configure the database properties in the application.properties file and use Spring Data JPA.

• Configure the database properties in the application.properties file, including the URL, username, and password.

• Add the necessary dependencies in the pom.xml file for Spring Data JPA and the database driver.

• Create a repository interface that extends JpaRepository to interact ...read more

Spring Boot annotations are used to simplify the development process by providing metadata to the Spring framework.

• 1. @RestController - Used to define RESTful web services.

• 2. @RequestMapping - Maps HTTP requests to handler methods of MVC and REST controllers.

• 3. @Autowired - Used for automatic dependency injection.

• 4. @Component - Indicates that a class is a Spring component.

• 5. @Service - Indicates that a class is a serv...read more

Two components can communicate using a shared service or event bus.

• Use a shared service to store and retrieve data that both components need.

• Implement an event bus to allow components to subscribe and publish events.

• Utilize a state management library like Redux to manage shared state between components.

Two microservices can interact through synchronous communication, asynchronous communication, event-driven architecture, and shared database.

• Synchronous communication using REST APIs or gRPC

• Asynchronous communication using message queues like RabbitMQ or Kafka

• Event-driven architecture using publish-subscribe pattern with message brokers

• Shared database for direct data exchange between microservices