Tata Elxsi Automation Test Engineer Interview Questions and Answers

Q1. Basic selenium and Basic Java
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Q1. Java Program - Reverse a string Selenium - stale element
Ans. 
Reverse a string using Java program and handle stale element in Selenium
• Create a Java program to reverse a string using StringBuilder or char array

• In Selenium, handle stale element exception by refreshing the element or using WebDriverWait

• Example: Java program - input: 'hello', output: 'olleh'; Selenium - handle stale element by refreshing the element before interacting with it
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Q1. What is your expected salary
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My expected salary is based on my experience, skills, and the market rate for Automation Test Engineers.
• I have researched the average salary range for Automation Test Engineers in this location.

• I am looking for a competitive salary that reflects my expertise in automation testing.

• I am open to negotiation based on the overall compensation package offered.
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Q1. Write a program to print how many integer and character from a given string. Input:"nAJh4837sj"
Ans. 
A program to count the number of integers and characters in a given string.
• Iterate through each character in the string and check if it is an integer or a character.

• Use isdigit() function to check if a character is an integer.

• Keep separate counters for integers and characters.

• Return the counts of integers and characters at the end.
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Q2. Diff btw Final vs finally vs finalize
Ans. 
Final is a keyword in Java used to restrict inheritance, finally is a block used in exception handling, and finalize is a method used for cleanup.
• Final is a keyword in Java used to restrict inheritance or prevent method overriding.

• Finally is a block used in exception handling to ensure a piece of code is always executed, whether an exception is thrown or not.

• Finalize is a method in Java used for cleanup operations befo
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Q3. Diff btw assertion vs validation/verification
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Assertion is a statement that checks if a condition is true, while validation/verification is the process of confirming that a product meets specified requirements.
• Assertion is used to validate the expected outcome of a test case.

• Validation/verification is the process of checking if the product meets the specified requirements.

• Assertions are typically used within test scripts to verify the expected behavior of the syst...read more
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Q1. Tell me your Self introduce
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Q2. Tell me project structure
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Project structure refers to the organization of files, folders, and resources within a software project.
• Main folders like src (source code), test (test cases), lib (libraries), docs (documentation)

• Subfolders for specific modules or components

• Configuration files like pom.xml, package.json, etc.

• Build scripts like Jenkinsfile, Dockerfile

• Version control files like .gitignore, .gitattributes

• README.md file for project overvi
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Q1. Explain Framework
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A framework is a set of guidelines, tools, and libraries used to develop and maintain software applications.
• Provides structure and guidelines for development

• Promotes code reusability and maintainability

• Includes libraries and tools for common tasks

• Supports automation and scalability

• Examples: Selenium WebDriver for web automation, TestNG for test execution
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Q2. Code to find second largest number in array without sorting
Ans. 
Use two variables to keep track of the largest and second largest numbers in the array.
• Iterate through the array and compare each element with the largest and second largest variables.

• Update the variables accordingly to find the second largest number.

• Return the second largest number once the iteration is complete.
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Q3. Find xpath of product on amazon
Ans. 
The xpath of a product on Amazon can be found by inspecting the HTML code of the product page.
• Right click on the product on Amazon and select 'Inspect' to view the HTML code

• Locate the unique identifier of the product, such as class name or id

• Construct the xpath using the unique identifier and other relevant attributes
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Q4. Oops concept in java
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Object-oriented programming concept in Java
• Encapsulation: bundling data and methods that operate on the data

• Inheritance: creating new classes using existing classes

• Polymorphism: ability to present the same interface for different data types
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30 mins - interview duration
C# OOPS, Selenium and Manual testing concepts

Q1. Difference b/w Hashmap vs HashTable and which one is faster on basis of performance!
Ans. 
HashMap allows null values and keys, while HashTable does not. HashMap is not synchronized, making it faster in performance compared to HashTable.
• HashMap allows null values and keys, while HashTable does not.

• HashMap is not synchronized, making it faster in performance compared to HashTable.

• HashMap is preferred for non-thread-safe applications, while HashTable is preferred for thread-safe applications.
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Q2. Why Stale Element Reference Exception!
Ans. 
Stale Element Reference Exception occurs when an element is no longer attached to the DOM.
• Occurs when an element is located in the DOM, but later becomes detached or deleted

• Common in dynamic web applications where elements are frequently changing

• Can be resolved by re-locating the element before interacting with it
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Q3. Diff between Collection VS Collections
Ans. 
Collection is an interface in Java that represents a group of objects, while Collections is a utility class in Java that contains static methods for operating on collections.
• Collection is an interface in Java, while Collections is a utility class.

• Collection is used to represent a group of objects, while Collections is used for operations on collections like sorting, searching, etc.

• Example: List is a Collection interfac...read more
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Q4. What is POM ? Why we need !
Ans. 
POM stands for Page Object Model. It is a design pattern used in test automation to create reusable and maintainable code.
• POM helps in separating the test scripts from the web elements, making the code more organized and easier to maintain.

• It improves code reusability by creating separate classes for each web page, containing all the elements and actions related to that page.

• POM reduces code duplication and enhances te...read more
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Q1. What's Maven Life Cycle?
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Q2. How can we pass test data to the tests?
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Q1. Difference between array and arraylist?
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Q2. Difference between hashmap and hashtable?
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Q1. What is singletion design pattern
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Singleton design pattern ensures a class has only one instance and provides a global point of access to it.
• Ensures a class has only one instance

• Provides a global point of access to that instance

• Commonly used in scenarios where only one instance of a class is needed, such as database connections or logging
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