Learn the fundamentals of the Apex programming language.
Learn Apex Programming with Swapnil:
📌 Day 1: Introduction to Apex
- What is Apex? Apex is Salesforce’s object-oriented programming language.
It is strongly typed (you must define variable types).
It runs on Salesforce servers, inside the Lightning Platform.
Apex is used to:
Automate business logic (Triggers, Classes).
Integrate with external systems (via API callouts).
Create complex customizations not possible with just point-and-click tools (Flows, Process Builder).
Think of it like Java for Salesforce.
- Where is Apex used? Triggers → Automate logic when records are inserted/updated/deleted.
Classes → Write reusable code and business logic.
Batch Apex → Process large amounts of data asynchronously.
Schedulable Apex → Run jobs at specific times.
Web Services / API → Expose or consume APIs.
- Your First Apex Code Let’s write a very basic example:
public class HelloWorld { public static void sayHello() { System.debug('Hello, Salesforce Developer!'); } }
public class HelloWorld → Defines a class.
public static void sayHello() → Method inside the class.
System.debug() → Prints output to debug logs (like console.log in JavaScript or print in Python).
👉 Run this in Developer Console → Execute Anonymous:
HelloWorld.sayHello(); You’ll see "Hello, Salesforce Developer!" in the logs.
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