Selenium Java Coding Interview Questions
Selenium Java Coding Interview Questions
Selenium is an open-source automation testing tool widely used to test web applications. For job interviews based on Selenium in Java, candidates can expect questions related to programming concepts and Selenium functions. These questions may cover topics such as Java basics, programming logic, object-oriented programming, data types, control structures, loops, arrays, and Selenium methods and commands. Candidates may also be asked to write code snippets to demonstrate their understanding of these concepts and how they can be applied in real-world testing scenarios. To succeed in a Selenium Java coding interview, candidates need to have a solid understanding of both Java and Selenium and be able to demonstrate their coding skills and problem-solving abilities.
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1 - What is Selenium?
Selenium is an open-source automation testing tool used for testing web-based applications. It allows testers to write automation scripts in various programming languages such as Java, Python, and C#, and supports multiple browsers like Chrome, Firefox, and Internet Explorer.
2) Explain the advantages of using Selenium.
Selenium offers several advantages such as it is open-source, cross-platform, and supports multiple browsers. It also provides flexibility to testers to choose their preferred programming language, has a large community for support, and can be easily integrated with other testing tools.
3) What are the different components of Selenium?
Selenium has four main components – Selenium IDE, Selenium WebDriver, Selenium Grid, and Selenium RC. Selenium IDE is a record and play tool, while Selenium WebDriver is used for automating web applications. Selenium Grid allows running automated tests on multiple machines, and Selenium RC is the predecessor of WebDriver.
4) How do you identify elements on a web page using Selenium?
Selenium provides different locators to identify elements on a web page such as id, name, class name, CSS selectors, and XPath. These locators are used to find elements and perform actions like click, type, select, etc.
5) What is a WebElement in Selenium?
WebElement is a class in Selenium that represents an HTML element on a web page. It provides methods to interact with elements and retrieve text, attributes, and CSS values.
6) Can you perform parallel testing using Selenium?
Yes, Selenium Grid allows running automated tests in parallel on multiple machines and browsers, reducing the overall execution time.
7) How do you handle multiple windows in Selenium?
You can use the WindowHandle API to switch between multiple windows in Selenium. It provides methods to get a handle of different windows and switch between them using their unique identifiers.
8) What is the difference between Absolute XPath and Relative XPath?
Absolute XPath specifies the full path of an element from the root node, while Relative XPath defines the path of an element relative to its parent or sibling elements. Relative XPath is more preferred as it is less likely to break if there are changes in the HTML structure of the page.
9) How do you handle pop-up windows in Selenium?
You can use the Alert interface in Selenium to handle JavaScript pop-up windows. It provides methods such as accept(), dismiss(), and getText() to interact with these pop-ups.
10) What is data-driven testing in Selenium?
Data-driven testing in Selenium is a technique where test data is stored externally in a data source like Excel or CSV files. These data are then fed to test scripts to execute different test scenarios without modifying the code.
11) What are the different types of wait used in Selenium?
There are three types of wait in Selenium – Implicit Wait, Explicit Wait, and Fluent Wait. Implicit wait sets a timeout for the web driver to wait for presence of an element. Explicit wait waits for a specific condition to be true before proceeding further. Fluent wait polls the webpage at regular intervals until the condition is met or timeout is reached.
12) How do you handle authentication pop-ups in Selenium?
You can use the AutoIT tool in Selenium to handle authentication pop-ups. It is an automation tool that can handle windows-based pop-ups and can be integrated with Selenium to handle authentication pop-ups.
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13) What is Page Object Model (POM)?
Page Object Model is a design pattern used in Selenium for better maintenance and reuse of code. It involves creating separate classes for each web page of the application, encapsulating the elements and methods related to that page.
14) How do you handle dropdowns in Selenium?
You can use the Select class in Selenium to handle dropdowns. It provides methods like selectByVisibleText(), selectByValue(), and selectByIndex() to select an option from the dropdown.
15) What is a framework in Selenium?
A framework in Selenium is a set of guidelines and best practices to organize and structure automated tests for maximum efficiency and maintainability. It includes a combination of tools, libraries, and coding techniques to build reliable and scalable test suites.
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