Learn Apex - 10 Code Examples & CST Typing Practice Test
Apex is a strongly typed, object-oriented programming language developed by Salesforce for building scalable, secure, and automated applications on the Salesforce platform. It allows developers to execute business logic on the server side, integrate external systems, and customize CRM workflows using a syntax similar to Java.
Learn APEX with Real Code Examples
Updated Nov 19, 2025
Learning Path
Learn Salesforce fundamentals
Master SOQL & DML
Write triggers
Learn async Apex
Integrate external systems
Skill Improvement Plan
Week 1: Apex basics & SOQL
Week 2: Triggers & bulkification
Week 3: Async Apex (Batch/Queueable)
Week 4: Integrations & APIs
Interview Questions
Explain governor limits.
Difference between trigger.new and trigger.old?
What is bulkification?
How do you handle callouts in Apex?
What is a Queueable Apex class?
Cheat Sheet
SELECT Id, Name FROM Account;
insert new Account(Name='Test');
System.debug('Log');
Test.startTest(); ... Test.stopTest();
@future callout=true
Books
Advanced Apex Programming
Salesforce for Developers
Apex Academy Series
Tutorials
Trailhead Apex Basics
Apex Trigger Workshops
Apex Hours YouTube sessions
Official Docs
Salesforce Apex Developer Guide
SOQL & SOSL Reference
Salesforce CLI Reference
Community Links
Salesforce StackExchange
Trailblazer Community
Apex Hours
Community Support
Salesforce StackExchange
Salesforce Trailblazer Community
Apex Hours
Salesforce Discord groups
Local Developer Groups
Frequently Asked Questions about Apex
What is Apex?
Apex is a strongly typed, object-oriented programming language developed by Salesforce for building scalable, secure, and automated applications on the Salesforce platform. It allows developers to execute business logic on the server side, integrate external systems, and customize CRM workflows using a syntax similar to Java.
What are the primary use cases for Apex?
Salesforce triggers & automation. Custom REST & SOAP APIs. Batch & scheduled jobs. Complex CRM business logic. Integrations with external systems. Custom Salesforce Apps & packages
What are the strengths of Apex?
Native integration with Salesforce objects. Secure, scalable execution. Excellent tooling and test framework. Great for enterprise automation. Powerful asynchronous capabilities
What are the limitations of Apex?
Vendor lock-in to Salesforce ecosystem. Strict governor limits. Cannot interact with system file I/O. Restricted multithreading. Must follow Salesforce deployment rules
How can I practice Apex typing speed?
CodeSpeedTest offers 10+ real Apex code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.