Salesforce Apex: The Complete Introduction for Beginners

Explore operators and expressions in Apex, covering arithmetic operators such as plus, minus, multiply, and divide, as well as assignment, equality, and logical operators, and learn operator precedence.

Master Apex operators and expressions, learning how expressions evaluate to a single value. Explore mathematical, assignment, equality, and logical operators, and use parentheses to control evaluation order.

Explore control flow statements in Apex, using if else and switch to evaluate conditions and choose execution paths, and learn loops that repeat code until a condition is met.

Learn how classes define data and logic and how objects are instances of those blueprints. See class variables and methods for deposits and withdrawals in a bank example.

Learn how access modifiers control visibility in Apex, using public and private members, with a practical example of a private first name and a public setter that validates data.

Build a complete object-oriented Apex bank account class with a private balance and a private static combined balance, supporting deposit, withdraw, and get balance, then test via anonymous Apex.

Learn how maps store key-value pairs and use a key to retrieve its value. Use put to add or update, get to fetch values, and remove to delete pairs.

Walks through a SQL and DML assignment to create ten accounts, assign employees in increments of 100, save changes, and query the top five accounts by employees, handling nulls.

Learn how the assert class added in winter 23 release improves unit-test readability in Salesforce Apex by replacing system.assert with expressive methods like is true, are equal, and not null.