10+ ETF Interview Questions and Answers

I will report the defect to the project manager and the development team.

• Report the defect immediately

• Provide detailed information about the defect

• Collaborate with the development team to resolve the issue

Static variables and methods belong to the class rather than the instance of the class.

• Static variables are declared with the 'static' keyword and are shared among all instances of the class.

• Static methods are also declared with the 'static' keyword and can be called without creating an instance of the class.

• Static methods cannot access non-static variables or methods of the class.

• Example: 'public static int count;' declares a static variable 'count' that can be accessed by a...read more

Java Package is a way to organize related classes and interfaces. It helps in encapsulation, reusability, and modularity.

• Packages help in avoiding naming conflicts between classes and interfaces.

• Packages provide access control by using access modifiers like public, private, and protected.

• Packages help in creating a modular and scalable application.

• Packages can be imported to use the classes and interfaces defined in them.

• Examples of Java packages are java.lang, java.util, and...read more

To report a bug in Jira, follow these steps:

• Click on the 'Create' button in the top navigation bar

• Select 'Bug' as the issue type

• Fill in the required fields such as summary, description, and priority

• Attach any relevant files or screenshots

• Click 'Create' to submit the bug report

Static variables are shared across all instances of a class while non-static variables are unique to each instance.

• Static variables are declared with the 'static' keyword while non-static variables are not.

• Static variables are initialized only once, at the start of the program, while non-static variables are initialized each time an instance of the class is created.

• Static variables can be accessed using the class name while non-static variables can only be accessed using an i...read more

Java class loader is a part of Java Runtime Environment (JRE) that loads classes dynamically at runtime.

• Java class loader is responsible for loading Java classes into the JVM.

• It searches for the class file in the classpath and loads it into memory.

• There are three types of class loaders in Java: Bootstrap, Extension, and System class loader.

• Custom class loaders can also be created to load classes from non-standard sources.

• Class loaders follow a delegation model to load classes...read more

Constructor is used to initialize an object while method is used to perform a specific task.

• Constructor has the same name as the class while method has a unique name.

• Constructor is called automatically when an object is created while method is called explicitly.

• Constructor does not have a return type while method has a return type.

• Example of constructor: public MyClass() { // initialization code }

• Example of method: public int calculateSum(int a, int b) { return a + b; }

Scenario is a test case that describes a specific situation. Scenario Outline is a template for creating multiple scenarios.

• Scenario is a detailed description of a specific test case

• Scenario Outline is a template that can be used to create multiple scenarios with different inputs

• Scenario Outline uses placeholders for input values that are replaced with actual values during execution

• Both are used in Behavior Driven Development (BDD) to describe the behavior of the system

Functional testing checks if the software meets the requirements while non-functional testing checks how well it performs.

• Functional testing ensures that the software meets the functional requirements specified in the design document.

• Non-functional testing checks the performance, usability, reliability, and other non-functional aspects of the software.

• Functional testing is black-box testing while non-functional testing is white-box testing.

• Examples of functional testing inclu...read more

Constructors are special methods used to initialize objects. There are two types of constructors in Java: default and parameterized.

• Default constructors are those that do not take any arguments and are automatically created by Java if no constructor is defined.

• Parameterized constructors are those that take one or more arguments and are used to initialize the object with specific values.

• Constructors have the same name as the class and do not have a return type.

• Constructors can...read more

Implicit and explicit waits are used in Selenium to handle synchronization issues during test execution.

• Implicit wait is a global wait applied to all elements in the script, whereas explicit wait is applied to specific elements.

• Implicit wait is set using the 'driver.manage().timeouts().implicitlyWait()' method, whereas explicit wait is set using the 'WebDriverWait' class.

• Explicit wait can be customized with conditions like 'elementToBeClickable', 'visibilityOfElementLocated',...read more

Test cases ensure software meets requirements & functions correctly.

• Test cases help identify defects early in the development cycle

• Test cases ensure software meets customer requirements

• Test cases help ensure software functions correctly

• Test cases provide documentation for future testing and maintenance

• Test cases help improve overall software quality

Test cases are documentation of test scenarios while test scripts are automated instructions to execute those scenarios.

• Test cases are written in natural language and are used to document the steps to be taken to test a particular feature or functionality.

• Test scripts are automated instructions that are written in a programming language to execute the test cases.

• Test cases are used for manual testing while test scripts are used for automated testing.

• Test cases are usually cre...read more

OOPS concepts in Java are the fundamental principles of object-oriented programming.

• Encapsulation: Hiding the implementation details of a class from other classes.

• Inheritance: A mechanism where one class acquires the properties and behaviors of another class.

• Polymorphism: The ability of an object to take on many forms.

• Abstraction: The process of hiding complex implementation details and showing only the necessary information.

• Example: A class 'Car' can inherit properties from ...read more

Test planning is the process of defining the scope, objectives, and approach for testing a software application.

• Identifying the testing objectives and goals

• Defining the scope of testing

• Determining the testing approach and techniques

• Creating a test plan document

• Estimating the testing effort and resources required

• Identifying the test environment and test data requirements