PTC QA Engineer Interview Questions and Answers

To select a dropdown in Selenium, use the Select class and its methods like selectByVisibleText, selectByValue, or selectByIndex.

• Use the Select class from org.openqa.selenium.support.ui package

• Identify the dropdown element using findElement method

• Create a new Select object by passing the dropdown element as a parameter

• Use selectByVisibleText, selectByValue, or selectByIndex methods to choose an option

The main method in Java can be overloaded but not overridden.

• Main method can be overloaded by defining multiple main methods with different parameters.

• Overloading allows multiple methods with the same name but different parameters.

• Main method cannot be overridden because it is a static method and static methods cannot be overridden.

I worked on a project to develop a mobile application for tracking fitness goals and workouts.

• Tested user authentication and registration processes

• Performed functional testing on workout tracking features

• Conducted regression testing after each new feature implementation

Regression testing is retesting of software to ensure that recent changes have not adversely affected existing features. Regression defects are bugs that reappear after changes.

• Regression testing is performed to make sure that new code changes have not introduced any new bugs or caused existing functionalities to break.

• It involves re-executing test cases that cover the impacted areas of the software.

• Regression defects ...read more

Regression defects occur when previously working features fail after changes in the codebase.

• Regression defects can arise after new features are added, e.g., a new payment method breaks existing checkout functionality.

• They can also occur due to code refactoring, such as changing a function's implementation that inadvertently affects other parts.

• Automated regression tests help catch these defects early, e.g., running a ...read more

Regression tests are run after every significant code change or new feature implementation.

• Regression tests are typically run after every significant code change or new feature implementation to ensure that existing functionalities are not affected.

• The frequency of running regression tests may vary depending on the project timeline and release cycle.

• In Agile development, regression tests are often run as part of the co...read more

To select the 5th dropdown option, locate the dropdown element and choose the 5th option.

• Locate the dropdown element using its unique identifier or class name

• Use a method like 'selectByIndex' or 'selectByVisibleText' to choose the 5th option

• Verify that the correct option has been selected

Use xpath to locate Google Search tab and Voice search button on the webpage.

• For Google Search tab: //input[@name='btnK']

• For Voice search button: //div[@aria-label='Search by voice']

Java program to reverse a string without using predefined methods.

• Create a char array from the input string.

• Use two pointers, one at the start and one at the end, to swap characters.

• Continue swapping characters until the pointers meet in the middle.