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Practice 669 real-world technical interview questions across Selenium, Playwright, Spring Boot, React, and System Design with detailed code solutions.

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What is an API?

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What are main differences between API and Web Service?

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What are the Limits of API Usage?

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What are some architectural styles for creating a Web API?

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Who can use a Web API?

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What is API Testing?

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What are the advantages of API Testing?

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Some common protocols used in API testing?

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What is the test environment of API?

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What are principles of an API test design?

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What are the common API testing types?

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What is the procedure to perform API testing?

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What must be checked when performing API testing?

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What is the best approach method to perform API testing?

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What are tools could be used for API testing?

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What are differences between API Testing and UI Testing?

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What are major challenges faced in API testing?

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What are the testing methods that come under API testing?

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Why is API testing considered as the most suitable form for Automation testing?

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What are common API errors that often founded?

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What kinds of bugs that API testing would often find?

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What is API documentation?

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What are API documentation templates that are commonly used?

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When writing API document, what must be considered?

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How often are the APIs changed and, more importantly, deprecated?

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What is REST?

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What is a RESTFul Web Services?

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What is a "Resource" in REST?

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What is the most popular way to represent a resource in REST?

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Which protocol is used by RESTful Web services?

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What are some key characteristics of REST?

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What is messaging in RESTful Web services?

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What are the core components of an HTTP request?

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What are the most commonly used HTTP methods supported by REST?

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Can GET request to be used instead of PUT to create a resource?

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Is there any difference between PUT and POST operations?

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Which purpose does the OPTIONS method serve for the RESTful Web services?

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What is URI? What is the main purpose of REST-based web services and what is its format?

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What is payload in RESTFul Web services?

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What is the upper limit for a payload to pass in the POST method?

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What is the caching mechanism?

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What are SOAP Web services?

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How does SOAP work?

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When to use SOAP API?

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How users utilize the facilities provided by SOAP?

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What is the major obstacle users faced when using SOAP?

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What are the various approaches available for developing SOAP based web services?

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What are the elements of a SOAP message structure?

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What are the syntax rules for a SOAP message?

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What is the transport method in SOAP?

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What are some important characteristics of a SOAP envelope element?

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What are the major functionalities provided by the SOAP protocol class?

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What are the web relation functionalities provided by SOAP protocol?

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How does the message security model allow the creation of SOAP more secure to use?

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What is the difference between top down & bottom up approach in SOAP Web services?

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What are advantages of SOAP?

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What are disadvantages of SOAP?

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SOAP or Rest APIs, which method to use?

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What are the factors that help to decide which style of Web services - SOAP or REST - to use?

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Full form of BDD

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What is Cucumber?

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What are the advantages of Cucumber?

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What are the two files required to run a cucumber test?

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What is a feature file?

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What is the file extension of feature file?

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What is the language used to write a scenario in feature file?

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What is the two main purpose of using Gherkin?

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What are the keywords used in Feature file?

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Is it mandatory to use Given, When, Then keywords while writing scenario?

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What is the difference between Given, When, Then steps in feature file?

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Explain Scenario Outline in feature file

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Explain background in feature file

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How to comment a line in Feature file?

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What is a Step definition file?

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Write an example BDD test scenario

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Explain Cucumber Tags

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Cucumber Tags are case sensitive. True or False?

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Name any two testing framework that can be integrated with Cucumber?

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Name any two build management tools that can be integrated with Cucumber?

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What software do you need to run cucumber in JAVA?

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How does a JUnit Test Runner class look like?

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What is @CucumberOptions in test runner? List the properties of @CucumberOptions

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Name any advanced framework design that can be used with Cucumber?

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Selenium can be integrated with Cucumber. True or False?

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Explain Cucumber Hooks

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What do you mean by cucumber dry run?

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What Is a Gradle Framework?

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Advantages Of Using Gradle?

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What Is Gradle Wrapper?

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Why Gradle Is Preferred Over Other Build Tools?

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What Is The Gradle Build Script File Name?

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What Is The Latest Version Of Gradle Available In The Market?

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How Do You Run Gradle Build?

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What Are The Core Components Of Gradle Build Script?

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How Do You Find Gradle Project Dependencies?

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The Main Difference Between Maven Build.xml And Build.gradle Script?

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How Do I Check Out And Build The Framework?

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How Long Should A Build Take?

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How Do I Configure The Gradle Daemon To Speed Up Builds?

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Why Are Compile-time Warnings Suppressed?

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What About Publishing Artifacts To Maven Central?

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When Will I Be Able To Play With This?

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What's The Overall Roadmap?

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Is Using Groovy For My Build Scripts Deprecated?

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Will Existing Plugins Still Work When I Write My Build Logic In Kotlin?

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Do I Have To Use Intellij Idea When Using Kotlin For Gradle?

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In What Language Should I Develop My Plugins?

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How do I force Gradle to download dependencies always?

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What are a Gradle project and task?

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What is Gradle Daemon?

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How Gradle achieves faster performance?

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Difference between settings.Gradle & Gradle .properties?

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What is Gradle Dependency Management?

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What is Gradle Multi-Project Build?

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What is Gradle Motto?

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What is Gradle Build Environment?

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Give a brief history of Java.

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How is java platform independent?

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What is JVM?

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What is JDK?

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What is JRE?

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List any five features of Java?

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Who calls the main method in java?

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Explain the working of JVM.

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Can we put more than one main class in a single java file?

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Can we put more than one public class in single java file?

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Can we put more than one main method in single class?

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Is Java purely Object Oriented? Explain.

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Is Java Compiled or an Interpreted language?

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How Java enabled High Performance?

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Why Java is considered dynamic?

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Difference between C++ and Java?

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What is Java Byte Code?

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What is the relation between class file and byte code?

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Is JVM, a compiler or interpretor?

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Why Java don't use pointers?

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Different types of memory used by JVM?

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What is JAR file?

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What is a WAR file?

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Define JIT compiler?

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How many bits are used to represent Unicode, ASCII, UTF-16, and UTF-8 characters?

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What environment variables do I need to set on my machine in order to be able to run Java programs?

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What is difference between Path and Classpath?

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List two Java IDE's?

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What are the principle concepts of OOPS?

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What is Abstraction?

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What is Encapsulation?

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What is Inheritance?

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What is Polymorphism?

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What is the difference between object oriented programming language and object based programming language?

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What is the difference between abstraction and encapsulation?

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Explain the different forms of Polymorphism.

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What is runtime polymorphism or dynamic method dispatch?

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How does Java implement polymorphism?

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Which object oriented Concept is achieved by using overloading and overriding?

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Can we achieve runtime polymorphism by data members?

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What is the primary benefit of Encapsulation?

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Is there any limitation of using Inheritance?

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Does Java support multiple inheritence?

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Define composition?

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What is method overloading?

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What is method overriding?

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Difference between Overloading and Overriding?

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Can overloaded methods be override too?

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How to invoke a superclass version of an Overridden method?

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How do you prevent a method from being overridden?

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Can we reduce the visibility of the "overridden" method?

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What restrictions are placed on method overriding?

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Can we overload main method?

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Can we override static methods?

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Can we override main method?

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What is Constructor?

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When super keyword is used?

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Explain the usage of this() with constructors?

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How are this() and super() used with constructors?

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What is "super" used for?

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What is "this" keyword used for?

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How does the Java default constructor be provided?

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What is the purpose of default constructor?

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Can constructor be inherited?

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What is static block?

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Can a constructor be made final?

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What's the difference between constructors and other methods?

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Can you call one constructor from another if a class has multiple constructors?

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What is constructor chaining and how is it achieved in Java?

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Does constructor returns any value?

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Can we make constructor final?

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Can we overload constructors?

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What will happen if we make the constructor private?

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Where and how can you use a private constructor?

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Is constructor inherited?

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Can we use both "this" and "super" in a constructor?

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Can we instantiate the object of derived class if parent constructor is protected?

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What kind of variables a class can consist of?

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What is a Local Variable

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What is a Instance Variable

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What is a Class Variable

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What is a Final variable?

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List the three steps for creating an Object for a class?

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List primitive Java types?

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When parseInt() method can be used?

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What is the default value of byte datatype in Java?

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What is the default value of float and double datatype in Java?

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What is the range of the short type?

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Variable of the boolean type is automatically initialized as?

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What is the default value of local variable?

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Can a double value be cast to a byte?

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Why is char 2 bytes?

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What is type casting?

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What is Downcasting?

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Difference between implicit and explicit type casting?

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What is the difference between static and instance methods?

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Why static methods cannot access non static variables or methods?

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When a byte datatype is used?

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If a variable is declared as private, where may the variable be accessed?

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What is the default value of an object reference declared as an instance variable?

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What are wrapper classes?

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Name Wrapper classes available for primitive types?

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What do you mean by return type Void?

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Difference between boolean and Boolean?

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Explain Autoboxing?

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What Design pattern Wrapper Classes implement?

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Why do member variables have default values whereas local variables don't have any default value?

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What is a transient variable?

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What is immutable object? Can you write immutable object?

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Define class?

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What are the different types of inner classes?

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What is static class?

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What is an inner class?

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What is final class?

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What is an Object class?

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What do you mean by object?

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Difference between class and objects?

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Which is the super class of all classes in java?

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Can a static nested class have access to the enclosing class non-static methods or instance variables?

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What are the advantages of Inner classes?

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What are disadvantages of using inner classes?

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If you compile a file containing inner class how many .class files are created and what are all of them accessible in usual way?

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Can the method local inner class object access method's local variables?

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Can a method local inner class access the local final variables?Why?

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Which modifiers can be applied to the method local inner class?

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Can a local class declared inside a static method have access to the instance members of the outer class?

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Can an anonymous class define method of its own?

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Can an anonymous class implement an interface and also extend a class at the same time?

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Can a top level class be private or protected?

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What is the Locale class?

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Can we declare a class static?

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Why inner class can access only final variable?

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What is a class file?

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What is the GregorianCalendar class?

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What is the SimpleTimeZone class?

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What is Locale?

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Property Class?

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What is the purpose of System Class?

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What is a Class Loader?

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What are the different class loaders used by JVM?

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What is reflection?

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What is an Immutable object?

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Give an example of immutable class?

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Difference between loadClass and Class.forName?

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What is the default value for Object Reference in Java?

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Is that the only way to initialize the object in that case?

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Can an unreferenced object be referenced again?

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What is final keyword?

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Does all property of immutable object needs to be final?

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Can we make an object final i.e immutable using final keyword?

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How can we make the object immutable?

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What is the purpose of making an object immutable?

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Can we declare main method as final?

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Explain the use of "Native" keyword?

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What is the use of Volatile Keyword?

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What is a strictfp modifier?

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What is volatile keyword?

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Can this keyword be assigned null value?

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Is main a keyword in Java?

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What is difference between instanceof and isInstance(Object obj)?

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What is assert keyword used for?

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What is keyword instanceOf used for?

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What is the difference between a break statement and a continue statement?

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What is dot operator?

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Break statement can be used as labels in Java?

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What is an abstract class?

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Can we instantiate an abstract class?

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Can an abstract class have a static method?

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Can an abstract class have a constructor?

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When you declare a method as abstract, can other nonabstract methods access it?

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Can there be an abstract class with no abstract methods in it?

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Difference between Abstract and Concrete Class?

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What will happen if we declare a class abstract as well as final?

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Can a class extend an interface?

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Can we have an abstract class without abstract methods?

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Can we have abstract methods in a class which is not Abstract?

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Can we declare an abstract method private?

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Can Abstract methods in parent class have a body?

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When Abstract methods are used?

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What is an Interface?

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Can we instantiate an interface?

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Can we create an object for an interface?

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Do interfaces have member variables?

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What modifiers are allowed for methods in an Interface?

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Can an Interface extend another Interface?

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Can we declare interface method's private?

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Can we declare an interface method static?

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Can an interface be final?

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Can we declare interface methods as private?

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What is a nested interface?

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What is difference between abstract class and interface?

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When should I use abstract classes and when should I use interfaces?

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What are the design considerations while making a choice between using interface and abstract class?

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What is the use of Marker interface if they don't hold anything?

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What is a marker interface?

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Name few Java marker interfaces?

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runnable a Marker interface?

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What is an Externalizable interface?

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Difference between serializable and externalizable interface?

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What is Externalizable interface?

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What is an exception?

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What is error?

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Which is superclass of Exception?

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What are the types of Exceptions in Java

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Why Errors are Not Checked?

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Why Runtime Exceptions are Not Checked?

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What are the advantages of using exception handling?

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What is the difference throw and throws?

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What is the use of finally block?

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What if there is a break or return statement in try block followed by finally block?

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Can we have the try block without catch block?

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How to create custom exceptions?

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What are the different ways to handle exceptions?

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How can we make sure that a code segment gets executed even in case of uncatched exceptions?

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Which are the two subclasses under Exception class?

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What is NullPointerException?

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When is the ArrayStoreException thrown?

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When ArithmeticException is thrown?

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Can try statements be nested?

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What is the difference between error and an exception?

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Is it necessary that each try block must be followed by a catch block?

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Does it matter in what order catch statements for FileNotFoundException and IOException are written?

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What class of exceptions are generated by the Java run-time system?

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Which arithmetic operations can result in the throwing of an ArithmeticException?

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Base class for Error and Exceptions?

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Explain java.lang.OutOfMemoryError?

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Can finally block be used without catch?

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Can an exception be rethrown?

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What will happen if static modifier is removed from the signature of the main method?

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Can static block throw exception?

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What is exception propogation?

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If System.exit (0); is written at the end of the try block, will the finally block still execute?

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What are packages?

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Define Packages in Java?

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Why Packages are used?

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Explain the import keyword.

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What is "Import" used for?

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What is a Static import?

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Is there any need to import java.lang package?

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Can i import same package/class twice?

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What do you mean by Access Modifier?

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What is protected access modifier?

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If a method is declared as protected, where may the method be accessed?

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Can a class declared as private be accessed outside it's package?

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Difference between Private , Public and Protected?

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What is Default Access?

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Difference between protected and default Modifier?

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What is Maven?

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What aspects are managed by Maven?

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Mention the three build lifecycle of Maven?

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What is the command to check the maven version?

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What does the build tool do?

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What is POM?

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What information does POM.xml file contain?

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What is Maven artifact?

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What is Maven Repository? What are their types?

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What is local repository?

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What is central repository?

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What is remote repository?

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What are the phases of a Maven Build Lifecycle?

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What is a goal in Maven terminology?

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What phases does a Clean Lifecycle consist?

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What phases does a Site Lifecycle consist?

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What is Build Profile?

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What are different types of Build Profiles?

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What is Maven Archetypes? And what are the Project Types?

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How to install Maven?

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What is Protractor?

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What are the prerequisites required to run Protractor?

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How Protractor, Selenium Server, and Selenium WebDriver work together?

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Why you choose Protractor when testing an application built on Angular or Angular JS and not Selenium?

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Can Protractor be used for testing Non-Angular JS Applications?

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What are the test frameworks supported by Protractor?

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What is Jasmine?

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What is Mocha?

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What is Typescript?

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What is a conf file in Protractor?

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What is a spec file in Protractor?

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How to exclude a spec file in Protractor

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What is the use of directConnect in Protractor?

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What are the locators in Protractor?

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How to add custom locator for Protractor?

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How do you check the status of a webdriver manager and how do you update webdriver manager?

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What is ElementFinder?

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What is an ElementArrayFinder?

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What is browser.refresh in Protractor?

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What is the difference between "GET" and "NAVIGATE in Protractor?

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How to find all the links on a webpage using Protractor?

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How do you verify tooltip text using Protractor?

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What are the mouse actions that can be performed using Protractor?

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Why getText() method returns Object instead of String in Protractor?

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How to get text from a textbox in Protractor?

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How do you verify whether an element exists on a webpage using Protractor?

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What are the methods present in Alerts Class?

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How to set value to prompt Alert in Protractor

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How to accept Alert in Protractor

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How to cancel Alert in Protractor?

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How do you stop Page Loading in Protractor when an element is loaded?

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How to verify whether an element is displayed on a webpage or not?

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How to verify whether an element is enabled or not?

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How to verify whether a dropdown is selected or not in angular applications?

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How do you find Angular on your page?

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What are the browsers supported by Protractor?

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What is Python? What are the benefits of using Python?

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What is PEP 8?

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What is pickling and unpickling?

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How Python is interpreted?

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How memory is managed in Python?

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What are the tools that help to find bugs or perform static analysis?

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What are Python decorators?

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What is the difference between list and tuple?

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How are arguments passed by value or by reference?

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What is Dict and List comprehensions are?

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What are the built-in type does python provides?

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What is namespace in Python?

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What is lambda in Python?

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Why lambda forms in python does not have statements?

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What is pass in Python?

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In Python what are iterators?

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What is unittest in Python?

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In Python what is slicing?

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What are generators in Python?

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What is docstring in Python?

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How can you copy an object in Python?

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What is negative index in Python?

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How you can convert a number to a string?

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What is the difference between Xrange and range?

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What is module and package in Python?

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Mention what are the rules for local and global variables in Python?

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How can you share global variables across modules?

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Explain how can you make a Python Script executable on Unix?

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Explain how to delete a file in Python?

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Explain how can you generate random numbers in Python?

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Explain how can you access a module written in Python from C?

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Mention the use of // operator in Python?

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Mention five benefits of using Python?

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Mention the use of the split function in Python?

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Explain what is Flask & its benefits?

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Mention what is the difference between Django, Pyramid, and Flask?

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Mention what is Flask-WTF and what are their features?

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Explain what is the common way for the Flask script to work?

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Explain how you can access sessions in Flask?

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Is Flask an MVC model and if yes give an example showing MVC pattern for your application?

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Explain database connection in Python Flask?

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You are having multiple Memcache servers running Python, in which one of the memcacher server fails, and it has your data, will it ever try to get key data from that one failed server?

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Explain how you can minimize the Memcached server outages in your Python Development?

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Explain what is Dogpile effect? How can you prevent this effect?

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Explain how Memcached should not be used in your Python project?

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What is Automation Testing

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What is Selenium? What are the different Selenium components?

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What Testing types are supported by selenium

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What are the limitations of Selenium?

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What are the different types of locators in Selenium?

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What is the difference between assert and verify commands?

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What is an XPath?

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Relative and absolute xpath?

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How to launch the browser in selenium WebDriver?

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What are the different types of Drivers available in WebDriver?

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What are the different types of waits available in WebDriver?

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Difference between quit and close?

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How to type in a textbox using Selenium?

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How to ensure if element is present on screen?

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How to get Text of particular webelement?

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How to select value in a dropdown?

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What are the different types of navigation commands?

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How to click on a hyper link using linkText?

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How to locate a frame in webdriver? OR How to switch from one Frame to another?

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How to jump back to parent window from any inner frame?

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What is the difference between findElement() and findElements()

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Can Selenium handle windows based pop up?

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How can we handle web-based pop-up?

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How to retrieve CSS properties of an element?

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How to handle multiple windows in selenium webdriver?

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Is Alert a interface?

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Explain Assertion in selenium

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What are diff exceptions in selenium�

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What is Framework

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Have you created any Framework?

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What are the types of WebDriver APIs available in Selenium?

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What are the Programming Languages supported by Selenium WebDiver?

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What is the difference between setSpeed () and sleep () methods?

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What is System.setProperty() in selenium?

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Is the ChromeDriver a Class or an Interface?

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What is the super interface of WebDriver?

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What is Stale Element Reference Exception?

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What happen if you mix both implicit wait and explicit wait in a Selenium Script?

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Can we pass a text to textbox without using sendKeys()? If Yes, Explain how it can be done?

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How do we clear the Textbox value in Selenium?

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How do we get Text of any WebElement?

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How do we get an attribute value in selenium?

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How do we click to hyperlink in selenium?

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How do we submit a form using selenium WebDriver?

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How can we press ENTER key on Textbox in selenium?

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What is difference between get() and navigate()

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How do we fetch current URL of browser?

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How can we maximise browser window in selenium?

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How to delete cookies in Selenium?

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Explain different ways of refreshing current browser in selenium

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What is the difference between driver.getWindowHandle() and driver.getWindowHandles() in Selenium WebDriver?

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How to find whether an element is displayed on the web page?

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How to capture screenshot in selenium webdriver?

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How to mouse hover on a web element using WebDriver?

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How to handle hidden elements in Selenium WebDriver?

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What is JavaScriptExecutor and its use in selenium WebDriver?

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What is Page Object Model in Selenium?

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What is Page Factory?

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What is the difference between Page Object Model (POM) and Page Factory?

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What are the advantages of Page Object Model Framework?

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How To Scroll Web Page Down Or UP Using Selenium WebDriver?

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How to perform right click in selenium?

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How to perform double click in selenium?

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How To Perform Drag And Drop Action in Selenium WebDriver?

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What Is Python? What Are The Benefits Of Using Python?

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How Python Can Be Used In Software Testing?

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What Python Frameworks Do You Know?

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What Tools That Helps Python Development Do You Know?

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What Is A "unittest" In Python?

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How Python Is Interpreted?

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What Is The Difference Between "xrange" And "range"?

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Define "module" And "package"?

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Selenium (Python)

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Why my pip is not working when my python is not installed properly?

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What is the commands for downloading selenium?

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How can we know that our python is properly installed or not?

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How can we implement unittest framework in our scripts?

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What are the different locators used?

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Which is the slowest locator?

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Which is the best locator?

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What is the library to be imported to add keyboard actions to our scripts?

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What is the library to be imported to add mouse actions to our scripts?

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What is Selenium?

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What is python?

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What is a locator?

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What is a Webdriver?

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Whats XPATH?

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Whats the difference between / and // in xpath?

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Whats explicit and implicit wait?

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What are window handles?

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What are alerts and how do you handle?

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How to find element by hyperlink?

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Selenium (Python)

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How do you write the text in the login form?

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Selenium (Python)

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What is the difference between close() and quit() func of the browser?

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When webpage is dynamic which element locater do we use to locate an element?

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How do we define a function in Python ?

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What is an indentation in python?

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What is the syntax for "for" loop if we have to run for loop for 3 times?

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What is WebDriver in selenium?

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What is the WebDriver used to run selenium script on chrome browser?

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What type of languages can we use to write selenium scripts?

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Can I use selenium for automation scripting without selenium IDE?

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What is the use of automation testing?

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Selenium (Python)

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Can we do data-driven testing using selenium?

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Selenium (Python)

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Is selenium helpful for standalone application testing?

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Why you prefer to use Python for Selenium?

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What versions are there of Selenium?

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What programming languages does Selenium Webdriver support?

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What kind of tests can we perform with Selenium Webdriver?

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What are the limitations of Selenium?

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What are the different types of locators that we can use to search for an element with Selenium?

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Selenium (Python)

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What is an XPath?

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What is the difference between / and // in an XPath expression?

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What are the different types of drivers currently supported by Selenium Webdriver?

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How can we select an option of a dropdown using Selenium Webdriver?

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What is Selenium WebDriver

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Is Selenium Web Driver Automation Tool?

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What kind of application best suited for Selenium and why it should be selected.

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Can Selenium Web Services tested using Selenium?

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How Can we launch Different browser using python.

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How Synchronization works in Selenium.

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What is Implicit Wait.

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What is explicity Wait.

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How can enter the values in text box using python.

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How can we check if control enabled or not?

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Selenium (Python)

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How can we get text of a web element.

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Is there any other way of reteriving text of web element.

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What are the different ways of selecting the values in dropdown.

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what are the different Navigation command in selenium?

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What is the difference b/w findelement and findelements

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what is the difference b/w Driver.Close and Diver.quit?

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Can selenium handle the windows pop up?

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Selenium (Python)

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Can selenium handle WebBased Pop Up.

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Selenium (Python)

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How can capture screenshot in selenium.

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Selenium (Python)

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What are switch Class in selenium.

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What Action class in selenium?

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Selenium (Python)

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How can we perform drag drop in selenium?

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How can mouse hover on a control in selenium?

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Selenium (Python)

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Can we move the mouse control to specific cooridinate in selenium

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Selenium (Python)

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Write a method to read data from webtable for specific row and column index using selenium.

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Selenium (Python)

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What are Python unitTest default methods

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How will install selenium in python?

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Selenium (Python)

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What is pass in python?

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Selenium (Python)

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How can we convert string to int in python?

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How will you handle exception in python?

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What are the different data types supported in python

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What is MRO in python

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How will identify when web element doesn't have any of the unique locater.

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Selenium (Python)

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How to execute java script in selnium with python?

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Selenium (Python)

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What are the differnt way entering value TextBox?

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Selenium (Python)

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What is the use of Xpath?

Topic: General Read Answer →

Selenium (Python)

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What are the different exception in selenium

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Selenium (Python)

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How will perform double click on web element

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How will you handle multiple windows in selenium

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Selenium (Python)

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What is framework?

Topic: General Read Answer →

Selenium (Python)

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What are the different automation Frameworks

Topic: General Read Answer →

Selenium (Python)

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write a program for the below pattern with only one while loop * * ** * * ** *

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Selenium (Python)

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What is the difference between Assert and Verify?

Topic: General Read Answer →

Selenium (Python)

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Why should Selenium be selected as a test tool?

Topic: General Read Answer →

Selenium (Python)

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What are the testing types that can be supported by Selenium?

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Selenium (Python)

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When should I use Selenium IDE?

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Selenium (Python)

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What is Java implementation of Python popularly know?

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Selenium (Python)

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What is used to create unicode strings in Python?

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Explain how python is interpreted.

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What is TestNG?

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What are the benefits of using TestNG?

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List out various ways in which TestNG can be invoked?

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List down TestNG Annotations?

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What are the different ways in which you can produce reports for TestNG results?

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What is @DataProvider annotation?

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How do you prioritize your test case in TestNG?

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What is timeout in TestNG?

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How do you skip a test in TestNG?

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What is expected annotation?

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What is syntax to set test method dependency for multiple test methods?

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How do you execute group test cases in TestNG?

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How do you preserve order in TestNG?

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How to use assertions in TestNG explain with one example?

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How do you architect Playwright tests to ensure strict isolation of user session data (cookies, local storage, session storage) across parallel test executions without incurring significant setup/teardown overhead?

Topic: General Read Answer →

easy

How would you manage and switch between multiple tabs or windows opened during a single E2E test execution in Playwright?

Topic: General Read Answer →

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How do you reliably wait for the completion of a large, asynchronous data grid load in Playwright?

Topic: General Read Answer →

easy

Describe how Playwright's auto-waiting mechanism works under the hood when interacting with elements, and when would it be appropriate to explicitly use `waitFor` methods instead of relying on the implicit waits?

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hard

Architecting E2E tests for UI resilience under simulated backend throttling and WebSocket degradation.

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Managing Browser Lifecycle and State in Playwright

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hard

Designing Playwright Tests for Distributed Microservice State Contention

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easy

What is the primary architectural difference between a Playwright `BrowserContext` and a Playwright `Page`, and when should one be preferred over the other?

Topic: General Read Answer →

hard

Managing Highly Concurrent, State-Dependent Playwright Sessions

Topic: General Read Answer →

medium

How do you simulate a sequence of complex browser events (e.g., mouse move, keydown, scroll) on a specific element while verifying a corresponding state change in a background service, ensuring reliable synchronization?

Topic: General Read Answer →

medium

How do you assert backend state when the UI lags behind?

Topic: General Read Answer →

medium

How do you reliably interact with elements that are dynamically rendered and initially invisible in Playwright?

Topic: General Read Answer →

easy

How do you reliably interact with elements inside an iframe when the iframe content is loaded asynchronously and might not be immediately visible?

Topic: General Read Answer →

medium

How do you manage complex, multi-stage asynchronous interactions in Playwright when element visibility or readiness is highly dynamic?

Topic: General Read Answer →

hard

Managing concurrent, long-running tasks without browser context leakage

Topic: General Read Answer →

medium

How do you manage shared, stateful test data efficiently when running multiple Playwright tests in parallel workers?

Topic: General Read Answer →

hard

Designing reliable uploads for large datasets using Playwright

Topic: General Read Answer →

hard

Designing a resilient test harness for concurrent, stateful E2E scenarios in Playwright

Topic: General Read Answer →

medium

How do you efficiently manage and persist complex, multi-page data structures gathered across several test steps in Playwright without relying on global state or brittle file I/O?

Topic: General Read Answer →

medium

How do you manage and assert complex page state across multiple test runs or components in Playwright without relying solely on API calls?

Topic: General Read Answer →

medium

How do you reliably wait for the completion of a large, dynamically loaded data set in Playwright without using arbitrary sleep timers?

Topic: General Read Answer →

hard

Designing Resilience for Flaky External API Dependencies in UI Tests

Topic: General Read Answer →

hard

Designing Robust Session Management in Distributed Playwright Tests

Topic: General Read Answer →

hard

Designing a resilient test suite for a high-concurrency, real-time dashboard

Topic: General Read Answer →

easy

How do you use Playwright's request interception capabilities to stub a specific API endpoint for isolated E2E testing?

Topic: General Read Answer →

medium

How should a Staff Engineer approach writing resilient and high-performance selectors for highly dynamic Single Page Applications (SPAs) in Playwright?

Topic: General Read Answer →

medium

How do you reliably interact with an element that is transiently obscured or disabled in Playwright?

Topic: General Read Answer →

hard

How do you architect a Playwright test to verify atomic transaction rollback across UI and API state?

Topic: General Read Answer →