TopHire Interview Questions and Answers

An interface is a contract that defines a set of methods that a class must implement, while an abstract class is a class that cannot be instantiated and can contain both abstract and non-abstract methods.

• An interface can only have abstract methods, while an abstract class can have both abstract and non-abstract methods.

• A class can implement multiple interfaces, but can only inherit from a single abstract class.

• Interfaces are used to achieve multiple inheritance in Java.

• Abstra...read more

Using jQuery, add a class to the last li element in a list.

• Use the :last selector to target the last li element.

• Use the addClass() method to add a class to the selected element.

Types of joins in MySQL include inner join, left join, right join, and full outer join.

• Inner join returns only the matching rows from both tables

• Left join returns all rows from the left table and the matching rows from the right table

• Right join returns all rows from the right table and the matching rows from the left table

• Full outer join returns all rows from both tables, including unmatched rows

Routing in CodeIgniter is the process of mapping URLs to specific controllers and methods.

• Routing allows for clean and user-friendly URLs.

• Routes can be defined in the routes.php file in the application/config directory.

• Routes can be configured to include parameters and specify default controllers and methods.

• CodeIgniter supports both simple and complex routing patterns.

• Routes can be used to handle URL redirection and create custom URL structures.

States of HTML DOM refer to the different states in which an HTML element can exist.

• The default state is 'unstyled' or 'initial state'

• The 'hover' state is when a user hovers over an element

• The 'active' state is when an element is being clicked on

• The 'focus' state is when an element is selected by keyboard navigation

CodeIgniter is a PHP web application framework that helps in developing dynamic websites quickly and easily.

• CodeIgniter is an open-source framework that follows the Model-View-Controller (MVC) architectural pattern.

• It has a small footprint and is easy to install and configure.

• CodeIgniter provides a rich set of libraries and helpers that simplify common tasks like database operations, form validation, and file uploading.

• It also has excellent documentation and an active communi...read more