EPAM Systems Junior Software Test Engineer Interview Questions and Answers

Find min and max number in an array of strings

• Convert array elements to integers for comparison

• Use built-in functions like Math.min() and Math.max()

• Handle edge cases like empty array or non-numeric elements

Exception handling in Java is a mechanism to handle runtime errors and prevent program crashes.

• Use try-catch blocks to handle exceptions

• Use finally block to execute code regardless of exception

• Use throw keyword to manually throw exceptions

• Use throws keyword in method signature to declare exceptions that can be thrown

Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.

• Regression testing is performed after code changes to verify that the existing features still work correctly.

• It helps in identifying any defects introduced by new code changes.

• Automated testing tools are often used for regression testing to save time and effort.

• Regress...read more

Sanity in software testing refers to a quick round of testing to ensure that the code changes have not adversely affected the existing functionality.

• Sanity testing is a subset of regression testing and is usually performed after a small code change or bug fix.

• It focuses on testing the most critical functionalities of the application to ensure they still work as expected.

• Sanity testing is not exhaustive and is meant to ...read more

Smoke testing is a quick test to check if the basic functionalities of the software are working, while sanity testing is a more thorough test to ensure that the software is ready for further testing.

• Smoke testing is done to check if the critical functionalities of the software are working properly.

• Sanity testing is done to ensure that the software is stable and ready for further testing.

• Smoke testing is usually done be...read more

Testing is the process of evaluating a system or its component(s) with the intent to find whether it satisfies the specified requirements or not.

• Testing is an essential part of software development.

• It helps to identify defects and errors in the software.

• Testing can be done manually or through automation.

• Types of testing include functional, performance, security, and usability testing.

• Testing should be done throughout t

There are various tools used in software testing such as Selenium, JMeter, Appium, etc.

• Selenium is used for web application testing

• JMeter is used for load testing

• Appium is used for mobile application testing

• Other tools include TestComplete, SoapUI, etc.

Java is a popular programming language for software testing due to its platform independence, object-oriented nature, and vast community support.

• Java is platform-independent, meaning that code written in Java can run on any platform that has a Java Virtual Machine (JVM) installed.

• Java is object-oriented, making it easier to write modular and reusable code.

• Java has a vast community of developers and testers, providing a...read more

To iterate a Map, use for-each loop or Iterator interface.

• Use for-each loop to iterate over the Map entries.

• Use keySet() method to get the Set of keys and then iterate over it.

• Use values() method to get the Collection of values and then iterate over it.

• Use entrySet() method to get the Set of Map.Entry objects and then iterate over it.

• Use Iterator interface to iterate over the Map entries.

Test scenarios are high-level descriptions of the functionality to be tested, while test cases are detailed steps to validate the scenarios.

• Test scenarios are broad and cover multiple test cases.

• Test cases are specific steps to validate a particular scenario.

• Test scenarios are usually created at the beginning of testing, while test cases are derived from scenarios.

• Test scenarios are used for high-level planning and est...read more

Use cases for application involve identifying different scenarios in which the application can be used to meet user needs.

• Testing different user interactions

• Validating system functionality

• Identifying edge cases

• Ensuring compatibility with different devices

• Verifying data integrity