Maini Precision Products Interview Questions and Answers

OOP is a programming paradigm based on the concept of objects, which can contain data and code to manipulate that data.

• Key principles include encapsulation, inheritance, and polymorphism

• Encapsulation allows data to be hidden and only accessed through methods

• Inheritance allows classes to inherit attributes and methods from other classes

• Polymorphism allows objects to be treated as instances of their parent class

React Hooks are functions that let you use state and other React features without writing a class.

• React Hooks were introduced in React 16.8 to allow functional components to have state and lifecycle methods.

• useState() is a Hook that lets you add state to functional components.

• useEffect() is a Hook that lets you perform side effects in functional components.

• useContext() is a Hook that lets you subscribe to React context without introducing nesting.

• Examples: useState() - const ...read more

SQL query for retrieving records from multiple tables

• Use JOIN clause to combine data from multiple tables

• Specify the columns you want to retrieve in the SELECT statement

• Use WHERE clause to add conditions for filtering data

• Example: SELECT column1, column2 FROM table1 JOIN table2 ON table1.id = table2.id WHERE condition

Coding principles are guidelines that help developers write clean, efficient, and maintainable code. Ensuring code quality involves following these principles and using tools for code reviews and testing.

• Coding principles include DRY (Don't Repeat Yourself), KISS (Keep It Simple, Stupid), SOLID (Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion), and YAGNI (You Aren't Gonna Need It).

• To ensure code quality, developers can use ...read more

Polymorphism is the ability of a function or method to behave differently based on the object it is called with.

• Polymorphism can be achieved in object-oriented programming through method overriding and method overloading.

• Method overriding allows a subclass to provide a specific implementation of a method that is already provided by its superclass.

• Method overloading allows multiple methods in the same class to have the same name but different parameters.

• Example: Inheritance in...read more

Data structures are ways to organize and store data in a computer so that it can be accessed and used efficiently.

• Types: arrays, linked lists, stacks, queues, trees, graphs, hash tables, etc.

• Differences: based on how data is stored, accessed, and manipulated

• Examples: Array - stores elements in contiguous memory locations; Linked List - elements are linked using pointers

JavaScript is a scripting language primarily used for web development, while Java is a general-purpose programming language often used for building applications.

• JavaScript is a scripting language, while Java is a general-purpose programming language.

• JavaScript is primarily used for front-end web development, while Java is used for building applications on servers and desktops.

• JavaScript code is executed on the client-side, while Java code is typically run on the server-side.

• J...read more

Content writing is the process of creating written material for websites, blogs, social media, and other digital platforms.

• Content writing involves researching and understanding the target audience

• It requires the ability to write in a clear and concise manner

• SEO knowledge is important for optimizing content for search engines

• Content should be engaging and informative to keep readers interested

• Examples of content writing include blog posts, product descriptions, and social med...read more