An exception is an unexpected event that occurs during the execution of a program, disrupting its normal flow.Example: Dividing by zero, accessing an invalid array index, or opening a missing file.

Loops allow a set of instructions to be executed repeatedly based on a condition.

Java provides control flow statements that allow your program to make decisions and execute different **blocks of code** based on conditions.

In Java, **operators** are special symbols used to perform operations on variables and values. An **expression** is a combination of variables, operators, and values that produces a result.

In Java, a variable is a container that holds data during the execution of a program. A data type specifies the type of value a variable can hold.

- Implement an Admin-only dashboard for managing products, users, and orders </br> - Create a role field in the User model (admin, user) </br> - Add middleware to restrict access based on roles </b...

Allow cross-origin requests from frontend apps. Explore how Backend-as-a-Service (BaaS) platforms can complement your custom Express backend

Enable users to log in using Google and GitHub accounts via OAuth 2.0, using Passport.js and passport-google-oauth20 / passport-github2.

Allow Handlebars views to all pages