Friday, December 1, 2023

Java Coding Interview Questions For Automation Tester

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What Are The Testing Types That Are Supported By Selenium

#1 : Java Programming Interview Questions For Automation Testers With Answers

Regression Testing and Functional Testing are majorly supported by Selenium.

  • Regression Testing:
  • All the Test cases are executed repeatedly either partially or as a full to ensure that the existing functionalities are working as designed. It includes the following steps,

    • Re-testing: All the test cases in the Test Suite are executed which proves to be time-consuming and expensive.
    • Regression Test case Selection: The test cases are classified or categorized as features tests, integration tests etc., and some test cases are selected.
    • Prioritization of Test cases: The test cases that are selected are prioritized based on the critical functionalities and business impact.
  • Functional Testing:
  • In this, all the functions in the application are verified with a specific requirement. This is primarily the black-box testing as it is not concerned about the source code of the application. It includes the following steps,

    • Test Input is identified.
    • The test case is executed
    • The actual outcome and the test outcome are compared accordingly.

    Summary Java Coding Questions For Test Automation Developers

    Java programming language is one of the pre-requisites for Selenium Webdriver automation. It supports many languages like Python, C#, Ruby, and Perl. Though, our principal goal is to make you self-sufficient in Java and Python programming. So that, you can use these skills in different conditions be it for automation testing or software development. Because of these obvious reasons, we delivered this set of top 10 Java coding questions for the job seekers.

    Message: We believe that this blog post Top 10 Java Coding Questions for Test Automation Developers would surely help to improve your test automation skills. If you have liked this post, then please share it further to extend the benefit to a larger audience.

    All the Best,

    How Many Parameters Do Selenium Commands Have At A Minimum

    There are four parameters that you must pass in Selenium. They are as follows,

    We can bind the Selenium to a specific IP address instead of a Local host in our local machine.

    • Port Number

    We can specify the port number too i.e., TCP/IP port to connect the Selenium tests to the Grid hub. We need to make sure that there is no other application with the same port number up in any other location within the same machine.

    The browser in which the selenium scripts have to be executed.

    The application URL triggers the test cases within that.

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    How To Login To Any Site If It Is Showing An Authentication Pop

    To handle authentication pop-ups, verify its appearance and then handle them using an explicit wait command.

    Use the explicit wait command

    WebDriverWait wait = new WebDriverWait

    Alert class is used to verify the alert

    Alert alert = wait.until)

    Once verified, provide the credentials


    Mention The Types Of Navigation Commands

    Java Coding Questions for Test Automation Developers – Navigates to the provided URL

    driver.navigate.refresh – This method refreshes the current page

    driver.navigate.forward – This method does the same operation as clicking on the Forward Button of any browser. It neither accepts nor returns anything.

    driver.navigate.back – This method does the same operation as clicking on the Back Button of any browser. It neither accepts nor returns anything.

    Free Course: Introduction to Selenium

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    What Is Test Automation Or Automation Testing

    Test automation or automation testing is the process of using specialized software to control the execution of tests and compare the results with expected outcomes. Automation testing can help reduce the time, cost, and effort required to test software applications by automating repetitive tasks and allowing testers to focus on more critical test cases.

    How To Use Foreach Method

    The forEach method provides a shortcut to perform an action on all the elements of an iterable. Letâs say we have to iterate over the list elements and print it.

    List< String>  list = new ArrayList< > Iterator< String>  it = list.iterator while ) 

    We can use forEach method with lambda expression to reduce the code size.

    List< String>  list = new ArrayList< > list.forEach 

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    Basic Automation Testing Interview Questions

    Since software testing covers a broad range of career paths, the automation testing and quality assurance interview questions below are likewise broad in scope. You can find in-depth QA interview questions and functional testing interview questions in separate articles if you want more detail.

    To make sure that you are fully prepared, we will start with the basics and work up to more advanced automation tester interview questions.

    Java Interview Questions For Selenium Automation Testing

    Automation Testing Mock Interview For 1-3 YOE (Java + Selenium +TestNG + Frameworks)

    Java Interview Questions for Selenium Automation Testing | This tutorial has listed 100++ frequently asked interview questions based on important topics during Java technical interview round for Selenium automation testing.

    During an interview, the same question can be asked in many different ways. So, be confident in an interview. Interviewers are interested in listening not just the correct answer, but also your knowledge about the topic.

    Here, listed Java interview questions for Selenium automation testing with the best possible answers will be helpful to get complete knowledge and tackle the interview.

    Your approach towards understanding the questions and sharing your answers plays an extremely important role in an interview success.

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    Popular Java Programming Interview Questions

    Prog_1. Write a program to checkwhether a number is prime or not?Prog_2. Write a program to findFibonacci series for a given range.Prog_3. Write a program to checkwhether a given string is palindrome or not?Prog_4. Write a program to checkwhether a number is Armstrong number?Prog_5. Write a program to findduplicates in an array.Prog_6. Write a program to findduplicate character in a string.Prog_7. Write a program to check the number of times substring appeared in a string.Prog_8.Write a program to print the below pattern:Prog_9.Write a program to print the below pattern:Prog_10. Write a program to print Floyds triangle.

    Author: Ankur Jain

    My Name is Ankur Jain and I am currently working as Automation Test Architect.I am ISTQB Certified Test Manager,Certified UI Path RPA Developer as well as Certified Scrum Master with total 12 years of working experience with lot of big banking clients around the globe.I love to Design Automation Testing Frameworks with Selenium,Appium,Protractor,Cucumber,Rest-Assured, Katalon Studio and currently exploring lot in Dev-OPS as well.I am currently staying in Mumbai, Maharashtra. Please Connect with me through Contact Us page of this website.

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    How Do You Find Broken Links In Selenium Webdriver

    When we use driver.get method to navigate to a URL, it will respond with a status of 200-OK

    200 OK denotes that the link is working and it has been obtained. If any other status is obtained, then it is an indication that the link is broken.

    Some of the HTTP status codes are :

    • 200 valid Link

    Use getResponseCode to get response code

    if!== 200)

    Through exception, if any error occurred


    With that we have come to the end of the article Seleinium interview questions.

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    Which Xpath Axes Do You Know

    XPath is a syntax used to manipulate Extensible Markup Language data. XPath Axes are used to locate nodes related to those on the tree. There are 13 Axes in total. Naming at least a few of them, such as ancestor, child, namespace, or parent, and mentioning the results they produce, will help you score extra points at the interview.

    What Are The Various Types Of Test Automation Frameworks

    Java Interview Questions for Selenium Automation Testing
    • Behavior-Driven Development Framework: Allows automating functional validations in an easy-to-read and understandable format for different professionals, including analysts, developers, and testers.
    • Data-Driven Testing Framework: Helps in segregating the test script logic and the test data. Allows storing test data in some external database in the form of key-value pairs. These keys are used for accessing as well as populating the data within the test scripts.
    • Keyword-Driven Testing Framework: It is an extension to the data-driven testing framework in a way that in addition to separating test data from the test scripts, a keyword-driven testing framework stores a part of the test script code in an external data file.
    • Library Architecture Testing Framework: Works on the principle of determining the right steps and then grouping them together into functions under a library. These functions are called in the test scripts whenever required.
    • Module-Based Testing Framework: Divides each application under testing into a number of logical and isolated modules. A distinct test script is created for each module.
    • Hybrid Testing Framework: Offers features belonging to different types of testing frameworks. The idea is to reap in all the benefits of various approaches with a single testing tool.

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    Start Preparing With These Selenium Interview Questions

    That sums up the list of the top Selenium interview questions and answers. This should help you prepare for that upcoming Selenium interview.

    If youre looking for more Selenium learning material, the QA preparation for Selenium Automation and Agile Interview is a helpful course. You can also check some of the best Selenium tutorials we have to further help you ace those Selenium interview questions.

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    What Is The Difference Between Type And Typeandwait Command

    The “type” command is used to enter text into a field on a web page. The “typeAndWait” command also enters text into a field, but it waits for the page to load before proceeding to the next command. This can be useful if you are unsure whether or not the text you entered will cause the page to refresh.

    The main difference between the “type” and “typeAndWait” command is that the “type” command does not wait for the page to reload, while the “typeAndWait” command does. If you are unsure whether or not the text you are entering will cause the page to refresh, it is best to use the “typeAndWait” command. This way, you can be sure that the next command will not be executed until the page has finished loading.

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    Explain The Difference Between Driverclose And Driverquit Commands In Selenium

    The following is the major difference between both commands:

    • close command closes the currently active browser window, which is being used by the user or which is currently accessed by the web driver.
    • quit command closes all the windows opened by the program, unlike the driver.close command.

    Both the commands do not take any value and also do not accept any parameter.

    List Out The Names Of Programming Languages Browsers And Operating Systems That Are Supported By Selenium

    How much Java/Programming knowledge required for Test Automation Interviews?

    Selenium supports various operating systems, browsers and programming languages. Following is the list:

    • Programming Languages: C#, Java, Python, PHP, Ruby, Perl, JavaScript.
    • Operating Systems: Android, iOS, Windows, Linux, Mac, Solaris.
    • Browsers: Google Chrome, Mozilla Firefox, Internet Explorer, Edge, Opera, Safari, etc.

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    What Is The Difference Between Object

    There is a difference between Object Oriented Languages and Object Based languages.

    Object Oriented Languages:

    • Some of the Object Oriented Languages are Java, C#, VB. Net, Smalltalk etc.,
    • These languages support all the concepts of OOPs.
    • These languages dont have the inbuilt objects.

    Object Based Languages:

    • Some of the Object Based Languages are JavaScript, VBScript etc.,
    • These languages support all the concepts of OOPs like inheritance and polymorphism.
    • These languages have the inbuilt objects, say JavaScript has window object.

    What Are The Different Types Of Waits Available In Webdriver

    There are two types of waits available in WebDriver:

    • Implicit wait: These waits are used to provide a default waiting time between the consecutive test steps across the entire test script. Hence, the subsequent test step would only be executed when the 30 seconds are over after executing the previous test step.
    • Explicit wait: These waits are used to halt the execution until a particular condition is met or the maximum time has elapsed.

    Explicit waits are instantiated for a particular instance only, whereas implicit waits are not.

    Want to learn about Selenium with Python! Check out our blog on Selenium Python Tutorial for beginners.

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    How To Mouse Hover Over A Web Element

    Actions class utility is used to hover over a web element in Selenium WebDriver

    Instantiate Actions class.

    In this scenario, we hover over search box of a website


    Master important testing concepts such as TestNG, Selenium IDE, Selenium Grid, Selenium WebDriver. Check out Selenium Certification Training. Enroll now!

    How Do We Create A Functional Interface

    Java Programming Interview Questions

    An interface with exactly one abstract method is called Functional Interface. @FunctionalInterface annotation is added so that we can mark an interface as functional interface. The major benefit of Java 8 functional interfaces is that we can use lambda expressions to instantiate them and avoid using bulky anonymous class implementation.

    @FunctionalInterfaceinterface Foo 

    Further Reading: Java 8 Functional Interfaces.

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    Differentiate Between Findelement And Findelements In The Context Of Selenium With Proper Examples

    Following table lists the differences between findElement and findElements in Selenium :

    The first web element that matches the locator is returned. It gives you a list of all the web items that match the locator.
    If there are no matching web elements, a NoSuchElementException is produced. If there are no matching elements, an empty list is returned.
    Syntax WebElement button = webdriver.findElement) Syntax List< WebElement> buttons = webdriver.findElements)
    • Using findElements:-
    // JAVAimport org.openqa.selenium.By import org.openqa.selenium.Keys import org.openqa.selenium.WebDriver import org.openqa.selenium.WebElement import import java.util.concurrent.TimeUnit public class findElements }

    Explanation – In the above code, first of all, we import all the necessary headers and then set up the driver for the chrome browser. We use the findElements method to find all the values present in the 2nd row of a table in the given URL web page using the XPath of the element.

    • Using findElement :-
    import org.openqa.selenium.By import org.openqa.selenium.Keys import org.openqa.selenium.WebDriver import org.openqa.selenium.WebElement import import java.util.concurrent.TimeUnit public class findTagname }

    What Is Selenium In Java

    In the context of Java, Selenium is a test automation framework as well as a tool for Web applications. It is used for implementing test cases, running them and reporting the results. Selenium is also a set of different programs for different platforms to be used with Java for testing. Selenium-RC is used for controlling Internet browsers, Selenium-IDE is used for recording and playing back Selenium scripts, etc. The usual practice is to use Selenium-RC for Web testing, and then use Selenium-IDE to turn the recorded scripts into Java classes and then run them using the Selenium-RC framework.

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    What Is Jre And Why Is It Required

    JRE stands for Java Runtime Environment. It comprises of the JVM , Java platform classes, and supporting libraries.Using JRE, we can only execute already developed applications. We cannot develop new applications or modify existing applications.As the name suggests, JRE only provides Runtime Environment.

    Qa Automation Engineer Interview Questions

    Automation Testing Mock Interview For 1-3 YOE (Java + Selenium +TestNG + Frameworks)
  • Name and describe the different components of Selenium.
  • What are some challenges associated with Selenium automation?
  • How would you manage GIT versions between two teams?
  • Name some alternatives to Selenium.
  • Name the test library APIs in the Robot Framework.
  • What are the developmental best practices in test automation?
  • Describe the steps involved in the Automation Process.
  • Can App Testing be done exclusively at the UI levels?
  • Who should be responsible for test automation?
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    What Are The Webdriver Supported Mobile Testing Drivers

    There are four main WebDriver-supported mobile testing drivers: AndroidDriver, IPhoneDriver, RemoteWebDriver, and Selendroid.

  • AndroidDriver is used to test Android applications. It can be used on real devices or emulators.
  • IPhoneDriver is used to test iOS applications. It can only be used on real devices.
  • RemoteWebDriver is used to test web applications on mobile devices. It can be used with a variety of browsers, including Safari, Chrome, and Firefox.
  • Selendroid is used to test Android applications. It can be used on real devices or emulators.
  • How To Reverse A String In Java

    It might be surprising, but there is no reverse utility method in the String class. But, itâs a very simple task. We can create a character array from the string and then iterate it from the end to start. We can append the characters to a string builder and finally return the reversed string.

    public class StringPrograms public static String reverse }

    Bonus Points: Adding null check in the method and using StringBuilder for appending the characters. Easy to Miss: The indexing in Java starts from 0. So, we have to start at âchars.length – 1â in the for loop.

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    How To Implement Binary Search

    The array elements must be sorted for implementing binary search. The binary search algorithm is based on the following conditions. If the key is less than the middle element, then we now need to search only in the first half of the array. If the key is greater than the middle element, then we need to only search in the second half of the array. And if the key is equal to the middle element in the array, then the search ends. Finally, if the key is not found in the whole array, then it should return -1. This indicates that the element is not present.

    public static int binarySearch  else if   else mid =  / 2 }if  return -1 }

    Top 50 Java Programming Interview Questions

    Automaters: Full Stack QA_SDET: Java Coding Interview Question for ...

    While we believe that this content benefits our community, we have not yet thoroughly reviewed it.If you have any suggestions for improvements, please let us know by clicking theâreport an issueâ button at the bottom of the tutorial.

    Java Programming Interview Questions are always the deciding factor in any Java interview. Whether you are a beginner in Java or an expert programmer, you will be tested for your coding skills in the interview. So, itâs a good idea to brush up your coding skills before you face the interview.

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