Dodsal Engineering & Construction Interview Questions and Answers

To read data for m excel, a program can use libraries like pandas or openpyxl.

• Use pandas library to read data from multiple excel files

• Use openpyxl library to read data from a specific excel file

• Specify the file path and sheet name to read data

• Use loops to read data from multiple sheets or files

• Handle errors and exceptions while reading data

Oops concepts are the fundamental concepts of Java programming language.

• Encapsulation - wrapping up of data and methods into a single unit

• Inheritance - acquiring properties of parent class by child class

• Polymorphism - ability of an object to take many forms

• Abstraction - hiding implementation details and showing only necessary information