SDET Interview Questions Selenium [ Amazon ] 2025

What We Are Learn:

SDET Interview Questions: As software development has become more complex, the Software Development Engineer in Test (SDET) role has become an essential part of the software development process. An SDET is responsible for testing software applications, identifying and reporting bugs, and ensuring the software meets the requirements and specifications.

When interviewing for an SDET position, candidates should expect questions designed to test their technical knowledge, problem-solving skills, and understanding of testing methodologies. These questions can cover various topics, from programming languages and algorithms to testing frameworks and software design patterns. In this article, we will explore some common SDET interview questions that candidates may encounter during the hiring process.

In addition to technical knowledge and problem-solving skills, SDET interview questions may assess a candidate’s ability to collaborate with other software development team members, communicate effectively, and adapt to changing requirements and timelines. Hiring managers may also ask about candidates’ experience with agile methodologies, continuous integration and delivery, and test automation frameworks.

Some common technical topics that may be covered in SDET interview questions include data structures, algorithms, software architecture patterns, database management, and web application security. Additionally, candidates may be asked to demonstrate their proficiency with specific programming languages such as Java, Python, or C# and testing frameworks such as Selenium, Appium, or JUnit.

By preparing for these questions in advance, SDET candidates can increase their chances of impressing hiring managers and securing a position in this exciting and rewarding field.

SDET Interview Questions Java

What is SDET?
What are the prominent roles and responsibilities of SDET?
What is the skill set required for an SDET role?
What is Adhoc Testing? How can we define ad-hoc testing in the current IT industry?
What are the key differences between a Software Development Engineer in Test (SDET) and a Manual Tester?
What is the code inspection in the context of software testing? What are the steps involved in code inspection?
What is the main difference between Severity and Priority?
What are the advantages of code inspection in software testing?
What are the critical differences between exploratory and Ad hoc testing?
What do you understand by Alpha and Beta Testing?
What is the Fuzz Testing?
What do you understand by Risk-Based Testing?
How can you decide what product is ready to ship?
What is the crucial difference between Quality Assurance and Quality Control?
What do you understand by a bug report in software testing?
What are the qualities of a good bug report?
What are the most prominent elements of a bug report in software testing?
What are some software testing tools used in the industry? Explain their key features also.
What are the main objectives of alpha testing?
What are the different types of beta testing?
What is the key difference between a Code Walkthrough and a Code Inspection?
What are the key differences between Alpha and Beta testing?
How can we test the text boxes without changing their backgrounds?
Which specific format of the bug report can a tester demand?
What would a tester do if there is no proper testing documentation available?
What is oops concept
Explain the main() method.
Explain the system.out.println();
Explain polymorphism
What is encapsulation
What is constructor
Write a program for string anagram.
Program for string reverse
Program for integer reverse
Program to find the count for the duplicate character in a string
Program for removing duplicates from a string
Program for palindrome
What is the difference between string and StringBuffer
What is the difference between immutable and mutable
Difference between ==operator and.Equals() method.
What is a static constant pool?
Difference between interface and abstract class
What is the difference between Break and Continue
Overloading and overriding
Difference between array and ArrayList
Difference between list and set
Explain the oops concepts used in the framework.
What is abstraction? How you implemented abstraction in your framework
Abstract class vs interface
What is a static method? How will you call a static method
What is a static variable? What will you call it?
What’s the use of abstract class
What’s the use of an interface
Local variable vs instance variable
How did you implement polymorphism in your framework? With an example
What is method overloading? How will you implement it? With an example
What’s the method overriding? How will you do it?
Why is the main method static?
Length vs length() difference
What are collections?
Set vs ArrayList
What’s a hashmap? Why do we use hashmap
Private vs protected difference
Program to print the number of occurrences of each character in the string “Abcdab”
Write a program for string reverse.
Write a program for Fibonacci.
Write a program to check whether a number is prime.
Does Java support multiple inheritances?
Write a code for the number of characters in a string.
How to connect Java application with Oracle database
Difference between interface and abstract class
Can we execute Java code without main()
Oops concept and difference between overloading and overriding
Find the top from the array list(10 numbers) using the Java code
Check the logic for the Fibonacci series, including the even/odd number and the top value from the 5th number.
What are the access modifiers and differences? Public, private, protected, default
What is an abstract class with an example
Polymorphism
Inheritance
Collection-set, list, map
Exception-exception, error, assertion
The oops-type casting of object
Wrapper classes
What is an Access Modifier in Java?
OOPS Concepts and its practical implementation in your framework.
What is the use of the super keyword?
What is the difference between equals and == operators?
What is the difference between final, finally, and finalize keywords?
What is the difference between an Abstract Class and an Interface?
What is the difference between throw, throws, and throwable keywords?
What are collections, and where did you use those collections in your frameworks?
What is the difference between Java 8 and Java 11 version?
Can we use try and finally block without using catch block?
What is static and dynamic binding?
Can it make the constructor private? If Yes/No, please provide an explanation.
Can it be made constructor as static? If Yes/No, please provide an explanation.
Can we achieve multiple inheritance? If Yes/No, please provide an explanation.
How does HashMap internally work?
Define Java collections.
Why Strings are Immutable?
What are method overloading and method overriding? Give some real examples. Where did you use them in your framework?
What is the base class for the Java class?
Is HashMap a thread-safe?
What is a deadlock condition?
What is the difference between a Comparable and a Comparator?
What is the use of synchronized keywords?
What is the use of static and final keywords?
Can the constructor be overloaded? If Yes/No, please provide an explanation.
What is HashSet, and how it internally works?
What is the difference between a Binary Tree and a Binary Search Tree?
What is the use of a default constructor?
What is the superclass of all classes in Java?
Can we inherit the final method/variables in the sub-class
Tell me about yourself
Rate yourself in Java
Beforemethod vs beforetest in TestNG
In a webpage, there are a few elements that execute fine a few times and fail a few times; what is the reason
w.r.t above Q. how to handle it
In a Webpage few elements are dynamic; how to handle it
How many kinds of locators are there
Why ID is most preferred
Xpath vs CSS, which is better
In a Text box, I need to pass only Upper case values, where text is extracted from an outside source(ex. Excel), and here in Excel, the values are in lowercase, now without using any Java APIs, using only Selenium, how do you pass only Upper case values
Explain the framework you designed from scratch
Have you worked in keyword driven framework
Explain the complete approach for Data-driven Testing implemented in the framework you are working on
What is ArrayList
Arrays vs ArrayList
Explain about Hashmap in detail
What does Thread safe mean?
How do you handle browser windows
Write Code from scratch for Add to cart Validations on Amazon Website
How to handle dynamic drop-downs
Throw vs throws
How to run test cases in parallel in Selenium
A complete approach to handle dynamic webtable
Why APIs?
Rest Vs Soap
Soap or Rest, which is better
What are the advantages of Rest over Soap
Why is your project, Rest API, used
Explain about Multithreading in Java
How you have handled Date and Time in your Framework
In banking applications, when money transactions are more, do you prefer Rest or Soap
Do you have any questions to ask
Get Row and Column values from an HTML WebTable
Switch to a specific window out of 100 windows and validate it
Find Broken Links in Selenium /How do you find broken links in Selenium WebDriver?
What is the same-origin policy, and how is it handled?
What is the major difference between driver.close() and driver.quit()?
How to scroll down a page using JavaScript?
How to mouse hover over a web element?
What is POM (Page Object Model)?
How does Selenium handle Windows-based pop-ups?
How to take screenshots in WebDriver?
Is there a way to type in a textbox without using sendKeys()?
How to upload a file in Selenium WebDriver?
When do we use findElement() and findElements()?
How do you perform drag-and-drop operations in WebDriver?
How do you deal with stale element exceptions in Selenium
Need to fetch Row & Column values from an HTML WebTable?
Have you ever tackled switching to a specific window out of 100? ߪߠValidate it too!
Broken Links – How do you spot them using Selenium?
Wrap your head around the same-origin policy and how it’s handled.
Quickie: What sets the driver.close() apart from driver.quit()?
Want to scroll down a page with JavaScript?
Hovering over a web element – how’s it done?
Know about the mighty POM (Page Object Model)?
Windows-based pop-ups got nothing on Selenium! How does it handle them?
Snapping screenshots with WebDriver – share the magic!
Typing in a textbox without sendKeys()? Is that even possible?
Time to learn file uploads in Selenium WebDriver!
FindElement() vs. FindElements() – when to use which?
Up your game: master drag and drop in WebDriver.
Stale element exceptions – how to deal with them in Selenium

SDET Interview Questions Selenium

Explain your framework
What is the sequence of TestNG annotations
Dataprovider annotations and their uses
Parallel execution in selenium
Explain selenium grid
Explain assertions, hard assertions, and soft assertions.
Explain you framework
Absolute vs relative XPath
How to get all the sibling elements
Questions on XPath techniques
How to come out of a frame?
How to handle popup
How to check whether an alert is available?
How to find hidden elements
How does the mouse hover over elements
What is a webdriver? How it works
How to implement scrolling in selenium
How to handle multiple windows
What is the return type of getwindowhandles
How to handle drop-down
How to skip specific test cases while executing using TestNG
TestNG annotations
Use of listener and reporter
Parameterization in TestNG
Describe the framework design & overall flow diagram used in your project.
How to handle Windows authentication popups with & without using third-party tools.
What are the different types of exceptions in selenium webdriver?
What are the different types of methods in selenium?
Can we enter text without using sendkeys()? If yes, how?
How do you find more than one web element on the list?
What is the difference between driver.Close() and driver.Quit command?
What is the difference between findelement/findelements?
How to count the number of links on a page?
Difference between assert and verify in selenium webdriver
How to take a screenshot using Selenium webdriver?
How will you execute your login script using the Chrome browser from your editor using Selenium?
Can we use multiple catch block inside a try block, how?
What is the difference between webdriver/firefoxdriver?
What is the difference between “get” and “navigate” when opening a web page in a Selenium web driver?
How can we use the Selenium web driver to get the font size, font color, and font type used for a particular text on a web page?
How do you manage the code versions in your project?
How do we handle dynamic elements without using XPath?
How to handle alerts and confirmation boxes.
How to handle colors in webdriver?
How does press shift +tab?
How to take a screenshot in selenium.
How does the selenium webdriver work?
How do you create an HTML test report from y our test script
How do you handle HTTPS websites in Selenium
How the TestNG interact with the selenium core
How to change the user agent in Firefox by selenium webdriver
How to check all checkboxes on a page
How to disable cookies in a browser
How to get the name of the browser using webdriver?
How to handle the Ajax popup window
How to handle the autocomplete box in webdriver
How to handle network latency using selenium
How to know all the methods supported in webdriver and its syntax
How to login into any site if it shows an authentication pop-up for user name and password during the launch of the URL
How to mouser hover on an element.
How to pass parameters from testng.Xml into test cases
How to perform double click using webdriver
How to prepare customized HTML reports using TestNG in a hybrid framework
How to put text in any search box using selenium webdriver
How to refresh a page without using a context click?
How to run tests in multiple browsers parallel (selenium grid )
How to store a value which is text boxes, using webdriver?
How to switch between the windows
How to type next in a new line inside a text area
How to work with dynamic web table
How to work with the radio button in webdriver
How can we retrieve the dynamically changing ads
If a selenium function requires a script argument, what would that argument look like in general terms?
If TestNG, I have tests test-1, test-2, test-3, test-4 and test-5. I want to run my execution order as test-5, test-4, test-3, test-2 and test-1. How do you set the execution order? Can you explain that?
The latest version of Firefox and Selenium in the market and the version on which you are testing
List the browsers, os supported by the selenium
Please tell me the difference b/w implicit wait and explicit wait
Provide details about the TestNG test output folder.
Suppose the developer changed the existing image to a new image with the same XPath. Is the test case pass or fail
There is a scenario where the “assert.Assertequals()” function fails automatically; it has to take the screenshot. How can you achieve this
Is there a way to click the hidden links in webdriver?
What are the technical challenges that you faced with selenium?
What classes extend webdriver
What is an action class in webdriver?
What is Selense?
What is the hierarchy of TestNG annotation
What is selenium? What are the different selenium components?
What is an XPath?
How to refresh a page without using a context click?
How do you handle the autocomplete box in webdriver?
What is the difference between selenium 1.0 and selenium 2.0 ??
How to switch between the windows (getwindowhandle and getwindowhandles)
How to read a particular cell from an HTML table
How to switch between frames in selenium webdriver
What are the different types of locators in selenium?
How to handle the Ajax popup window
How to connect to Excel code for Excel (poi) API to read Excel,
Retry executing only failed tests using TestNG
Relative XPath method
Parallel execution of test methods in TestNG
Parallel execution of classes in TestNG
Testing in multiple browsers using Selenium and TestNG
Find out broken links on a website using selenium webdriver and HTTP client
Find broken/invalid images on a page
How to handle internationalization through webdriver?
Page object model | pom
Taking screenshots only for failed tests
Wait commands in webdriver
What is a TestNG listener?
How to select an element from the dropdown?
What is a webdriver event listener?
What are the benefits of using TestNG
What are browsers supported by Selenium ide
What are different access specifiers in Java
What are the different assertions or checkpoints used in your script?
What are the different parameters for @test annotation
What are the different types of driver implementation
What are the features of TestNG?
What is the operating system supported by selenium
What are the possible scenarios where selenium findelement get fails
What is the basic use of Firefox profiles, and how can we use them using Selenium
What is the default time for Selenium ide and webdriver
What is the difference b/w getwindowhandle and getwindowhandles
What is the difference between get and navigate to open a web page in selenium webdriver
What is the difference between the @before method and @ before class?
What is the difference between absolute path and relative path
What is the difference between driver.Close() and driver.Quit()
What is the difference between selenium RC and webdriver
What is the difference between single and double-slash
What is the difference between thread.Sleep() and seleniumsetspeed(“2000”)
What is the difference between thread.Sleep() and selenium.Setspeed()
What is the most challenging test problem in my career automation
What mobile devices does it support
What are the different methods to locate an element?
Which one is better, one XPath or CSS
Which repository have you used to store the test scripts?
Why do we refer Firefox driver to the webdriver inheritance
Write a code to assert if my username is incorrect.
Write a Java program to swap two numbers.
Write down scenarios that we can’t automate.
What are the differences between selenium webdriver, ide, and RC?
What do desired capabilities do?
What is the actions class in webdriver
What is the difference between overload and override
What is the difference between webdriver and listener and TestNG listener
Read particular cells from the HTML table
The logic for looping the table, XPath, to iterate rows & columns
Can we run a group of test cases using TestNG
Code for opening the Firefox browser
Does Selenium support HTTPS protocols?
Downloading a file and save it?
Explain any 3 TestNG annotations.
TestNG- write sample code to select a browser depending on the parameter given in testing.Xml
Parameter annotation, how to add system property for chrome/iedriver.Exe for chrome & ie
How to check results with expected assert.Assertequals().
Implicit wait and explicit wait- webdriverwait or thread.Sleep()
What is rest API
Explain rest request methods (get, post, put)
Explain status codes like 200, 400, 404, 500, etc.
What is POJO class, and how to use it to rest assured?
How will you handle responses if they are nested JSON?
How to do setup for appium
Explain maven and pom.Xml
Explain log4j and how to customize it
Primary key vs foreign key
What is join
Drop vs truncate
Can we retrieve the data after a drop or truncate
How will provide story points for testing
How will you estimate automation efforts
How will you decide whether to automate or not
Defect cycle in Jira
What is a deferred bug
Bug leakage vs bug release
Given an array, find the kth largest element from an array optimized solutions
Given a string, find which bank has the fourth-largest deposits. [BankA$151.54B, BankB$81.4B, BankC$1$524.2B, BankD$2.54B, BankE$44.23B, BankF$124.54B, BankG$12.21B ] If two banks have the same number of deposits, consider only one value.
Given an array, find the maximum possible combinations of triangles.
Given a string, remove any character that appears more than once in the string.
Given a string, reverse the string, keeping the space position intact.
Count the prime numbers from 1 to N using the most optimized way.
Given a string, find the longest palindrome substring.
How can you print Pascal’s triangle?
Given an array of integers, validate if that array is a valid mountain array.
If the above array is a valid mountain array, then find the peak index.
Given a string (e.g. ” This is the first sentence. This is the second. And this is the third”), write a method that will return an array of hashmaps such that each hashmap in the array is one sentence and contains the (word number, word) of that sentence.
How can you implement mergesort using recursion?
Given a string “Hello! How are you 🙂 I am great :D” considering 🙂 and 😀 as smileys, print the count of smileys as 2
Find the depth of a binary tree without using recursion

Conclusion:

SDET interview questions related to Selenium are designed to assess the technical expertise of candidates applying for software development and testing roles. These questions cover various topics, from basic programming concepts to advanced test automation techniques, and require candidates to demonstrate their knowledge and problem-solving skills.

By preparing thoroughly for these types of interviews, candidates can increase their chances of success and impress potential employers with their technical abilities. Ultimately, using Selenium effectively is a valuable skill in the software development and testing industry, and SDET interview questions related to Selenium play an important role in identifying top talent.

If you have gone through an SDET interview, please feel free to share your insights on the types of questions asked, your preparation strategy, and any tips you may have for other candidates. Similarly, if you have any suggestions for improving the interview process or the types of questions asked, we would love to hear them. If you have any questions about SDET interviews or Selenium, please don’t hesitate to ask them in the comments section. We are here to support and assist you in any way we can.

SDET Interview Questions Selenium

SDET Interview Questions Java

SDET Interview Questions Selenium

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