Click Labs Software Engineer Interview Questions and Answers

Spring is a framework for building Java applications, while Spring Boot is a tool for quickly creating Spring-based applications.

• Spring provides a comprehensive framework for building Java applications, while Spring Boot is a tool that simplifies and accelerates the process of creating Spring-based applications.

• Spring requires more configuration and setup, while Spring Boot provides a pre-configured environment that re...read more

A program to check if two strings are anagrams of each other.

• Create two character arrays from the input strings

• Sort the arrays

• Compare the sorted arrays to check if they are equal

Using Streams API to filter and map an array of strings

• Create a stream from the array using Arrays.stream()

• Use filter() to select elements that meet a certain condition

• Use map() to transform each element into a new value

• Use toArray() to convert the stream back into an array

REST API is a web service that uses HTTP requests to access and manipulate data.

• REST stands for Representational State Transfer

• It is an architectural style for building web services

• It uses HTTP methods like GET, POST, PUT, DELETE to perform operations on resources

• It is stateless and can be cached

• It returns data in various formats like JSON, XML, etc.

API testing methods involve functional, performance, security, and exploratory testing.

• Functional testing ensures that the API meets the requirements and specifications.

• Performance testing checks the API's response time, throughput, and resource utilization.

• Security testing verifies the API's authentication, authorization, and encryption mechanisms.

• Exploratory testing involves ad-hoc testing to discover defects and usa...read more

Sanity and Smoke are types of software testing. Sanity tests a specific functionality while Smoke tests the entire system.

• Sanity testing is a narrow and deep testing approach while Smoke testing is a broad and shallow testing approach.

• Sanity testing is performed after a small change in code while Smoke testing is performed after a major change in code.

• Sanity testing is used to check if the critical functionalities are ...read more

Retesting is testing the same functionality again after fixing the defects. Regression is testing the unchanged functionality after making changes.

• Retesting is done to ensure that the defects have been fixed and the functionality is working as expected.

• Regression is done to ensure that the changes made to the software have not affected the existing functionality.

• Retesting is a subset of regression testing.

• Retesting is ...read more