Object Frontier Software Interview Questions and Answers

Building blocks of AngularJS include modules, controllers, directives, filters, services, and templates.

• Modules: organize code into reusable components

• Controllers: manage the data and logic of the application

• Directives: extend HTML with custom attributes and elements

• Filters: format data for display

• Services: provide functionality across the application

• Templates: define the user interface

Concurrent hashmap allows multiple threads to access and modify the map concurrently.

• Concurrent hashmap is thread-safe and provides high concurrency.

• It allows multiple threads to read and write to the map concurrently without blocking each other.

• It is useful in scenarios where multiple threads need to access and modify the same hashmap.

• Example: Caching systems, where multiple threads need to access and update the cache...read more

An immutable class is a class whose instances cannot be modified after creation.

• Make all fields private and final

• Do not provide any setter methods

• Ensure that any mutable objects passed to the constructor are defensively copied

• Override equals() and hashCode() methods to ensure that instances with the same values are considered equal

• Consider making the class final to prevent subclassing

@SpringBootApplication is a Spring Boot annotation that enables auto-configuration and component scanning.

• Enables auto-configuration of the Spring application context

• Enables component scanning for beans

• Provides a convenient shortcut for @Configuration, @EnableAutoConfiguration, and @ComponentScan annotations

• Can be used as a single entry point for the Spring Boot application