eClinicalWorks Softwaretest Engineer Interview Questions and Answers

Q1. Write a program to reverse the string
Ans. 
Program to reverse a string using array of characters
• Create an array of characters from the input string

• Iterate through the array in reverse order and append each character to a new string

• Return the reversed string
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Q1. How you have extracted data from excel sheet?
Ans. 
To extract data from an Excel sheet, you can use libraries like Apache POI or Openpyxl in Java or Python respectively.
• Use a library like Apache POI or Openpyxl to read Excel files

• Identify the sheet and cell range from which you want to extract data

• Iterate through the rows and columns to extract the desired data

• Store the extracted data in variables or data structures for further processing
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Q1. What are different Oops concept that you have used in your framework?
Ans. 
Encapsulation, Inheritance, Polymorphism, and Abstraction are the OOP concepts used in my framework.
• Encapsulation: Used to hide the internal details of an object and provide a public interface.

• Inheritance: Used to create a new class from an existing class, inheriting its properties and methods.

• Polymorphism: Used to perform a single action in different ways based on the object's type.

• Abstraction: Used to provide a simpl...read more
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Q1. What is Regression Testing?
Ans. 
Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.
• Performed after code changes to ensure that existing features still work correctly

• Helps in identifying and fixing any defects introduced by new code changes

• Automated tools like Selenium can be used for regression testing

• Examples: Testing a login feature after adding a ...read more
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Q1. Sql. Questions group by having and joins
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Q2. Datawarehousing and etl concepts
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Q1. Asked few Python and AWS related questions.
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They have asked bunch of question from java, which i have told o am not aware about

Q1. What is Binary trees,
Ans. 
Binary trees are hierarchical data structures composed of nodes, where each node has at most two children.
• Consists of nodes with at most two children - left and right

• Each node can have zero, one, or two children

• Used in data structures like binary search trees and binary heaps
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Q2. What are expection handling in pyhton
Ans. 
Exception handling in Python is a way to handle errors that occur during the execution of a program.
• Use try-except blocks to catch and handle exceptions

• Different types of exceptions can be handled separately

• Use finally block to execute code regardless of whether an exception occurred or not
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Q3. Write a SQL quesries
Ans. 
SQL query to retrieve employee names and their salaries from a table
• Use SELECT statement to retrieve data

• Specify the columns you want to retrieve (employee names and salaries)

• Specify the table name from which you want to retrieve data
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Q1. About oops, constructor,
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Q2. Spring boot, hibernate questions
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