Learn APEX with Real Code Examples

Create Salesforce Developer Org

Install VS Code with Salesforce Extensions

Authorize org using Salesforce CLI

Set up SFDX project directory

Deploy sample Apex classes to org

Install SFDX CLI

Set up VS Code Salesforce extensions

Connect to dev org

Create scratch org (optional)

Deploy and test sample classes

sfdx-project.json

Apex class metadata files

Permission sets

Named credentials

Object metadata XML

sfdx force:auth:web:login

sfdx force:source:push

sfdx force:apex:test:run

sfdx force:data:soql:query

sfdx force:source:deploy

Apex supports multi-language Salesforce orgs

Labels stored in Custom Labels

Supports UTF-8 strings

Locale-driven formats

Translatable UI via metadata

Developer Console & logs

Step-by-step debug logs

Trailhead courses

Unit testing framework

Salesforce documentation

Apex does not handle UI directly

Used to supply data to LWC/Aura

Can generate responses for Visualforce

Handles backend logic

UI styling done via LWC/HTML/CSS

Records stored as SObjects

Static variables for cross-transaction state

Trigger context provides transaction metadata

Platform events store async state

Lists and maps store runtime collections

Query via SOQL

Search via SOSL

CRUD via DML

Serialization/deserialization

Integration payload handling