Wrkspot Senior Software Developer Interview Questions and Answers

Streams in software development are sequences of data that can be processed sequentially or in parallel.

• Streams are used for processing large amounts of data efficiently.

• They can be used for reading from or writing to files, network connections, or other sources.

• Streams can be processed synchronously or asynchronously.

• Examples include reading a file line by line, processing a stream of sensor data, or downloading a lar

HashMap is non-synchronized and allows null values and keys, while HashTable is synchronized and does not allow null values or keys.

• HashMap is non-synchronized, meaning it is not thread-safe, while HashTable is synchronized and thread-safe.

• HashMap allows null values and keys, while HashTable does not allow null values or keys.

• HashMap is generally preferred for non-threaded applications, while HashTable is used in multi...read more

A clonable object is an object that can create a copy of itself, allowing for duplication without affecting the original object.

• Clonable objects implement the Cloneable interface in Java.

• The clone() method is used to create a copy of the object.

• Cloning can be shallow or deep, depending on the requirements.

• Examples of clonable objects include ArrayList, HashMap, and custom classes that implement Cloneable.

Microfrontend is a software architectural style where a frontend application is decomposed into smaller, more manageable pieces.

• Microfrontend allows teams to work on different parts of the frontend independently.

• Each microfrontend can be developed, tested, and deployed separately.

• Microfrontend architecture helps in scaling large frontend applications.

• Examples of microfrontend frameworks include single-spa, Webpack Modu

Setting up environment in Angular app, understanding pipes, async, pure/impure, Subject and BehaviorSubject in theory

• Setting up environment in Angular app involves configuring environment files for different environments like development, production, etc.

• Pipes in Angular are used for transforming data in templates. Async pipes are used for handling asynchronous data streams.

• Pure pipes are stateless and only recompute w...read more

Annotation used in Spring framework to enable component scanning for Spring-managed beans.

• Used to automatically detect and register Spring-managed beans within the specified package(s)

• Can be used at class level or configuration classes to specify base package(s) to scan

• Can be customized with additional attributes like basePackageClasses, includeFilters, excludeFilters

• Example: @ComponentScan(basePackages = {"com.example

The @Controller and @RestController annotations are used in Spring MVC to define classes as controllers for handling web requests.

• The @Controller annotation is used to define a class as a controller in Spring MVC, which can handle web requests and return a view.

• The @RestController annotation is used to define a class as a RESTful controller in Spring MVC, which can handle web requests and return data in JSON or XML for...read more

Class loader is a part of Java Runtime Environment (JRE) that loads classes and interfaces at runtime.

• Class loader is responsible for locating and loading the necessary class files into memory.

• It follows a hierarchical structure and delegates the class loading to parent class loaders.

• Class loaders can be customized to load classes from different sources like file system, network, or database.

• They provide a level of sec...read more

final is a keyword in Java used to declare a constant value. finally is a block used in exception handling to ensure a piece of code is always executed.

• final is used to declare a variable whose value cannot be changed

• finally is used in a try-catch block to specify a block of code that will always be executed, regardless of whether an exception is thrown or not

ArrayList is a resizable array implementation in Java.

• ArrayList is a class in Java's Collection framework.

• It provides dynamic resizing, unlike regular arrays.

• It can store objects of any type, including strings.

• ArrayLists can grow or shrink dynamically as elements are added or removed.

• Example: ArrayList names = new ArrayList();