Salesforce Apex Triggers & Test Classes + Interview Prep

Explore apex triggers and test classes, starting with epics fundamentals and collections (list, set, map), then dml and before/after trigger concepts for interview-ready practice.

Explore Apex, the strongly typed object-oriented language on the Force.com platform, and master core OOP concepts like encapsulation, inheritance, polymorphism, and abstraction to build secure, reusable Salesforce automation.

Explore Apex features like modularity, scalability, maintainability, and reusability within an object-oriented framework, including classes, interfaces, inheritance, security, governor limits, and database integration.

Use Apex for custom business logic and complex calculations beyond formula fields. Use Apex triggers for automation on data changes, plus web services integration and large-scale data processing.

Create your first Apex class in the developer console and perform an addition of two numbers. Explore class structure, properties, methods, constructors, and access modifiers including public, private, and protected.

Learn Apex primitive data types, including integer, decimal, double, boolean, string, date, time, and date time, with examples of storing values in variables, plus a preview of collections and SObjects.

Explore Apex collections: lists, sets, and maps, learn to declare and initialize them, and distinguish lists as ordered and duplicable from unordered, unique-valued sets.

Explore maps in Apex, learn how to declare and initialize key-value pairs, access values with get, add entries with put, and iterate by keys or values.

Master Apex DML operations such as insert, update, delete, and merge for standard and custom Salesforce objects. Learn to perform inserts using collections while honoring required fields and lookup relationships.

Master hands-on dml operations in apex, including insert, update, delete, upsert, and undelete, with bulk processing, recycle bin behavior, and cascade-delete scenarios in lookups.

Explore apex triggers and context variables, cover trigger types, and work through theoretical and scenario-based interview questions to solidify basics.

Learn how Apex triggers automate business logic in Salesforce by executing before or after insert, update, or delete events, using conditions, context variables, and comparing with flows for scalability.

Master Apex triggers by exploring types and context variables, practice scenario-based questions, and build a solid foundation in basics before tackling interview questions.

Explore context variables in Apex triggers, including trigger dot new, old, and maps, to handle before and after insert, update, delete, and undelete events.

Master Apex triggers syntax, before and after events, and bulkified handlers for account objects, including execution order, debugging, maps and lists, and when to use flows.

Implement a before update trigger on opportunities to update the description with owner's name and email when the owner changes, using maps and a SQL query to fetch user details.

Demonstrates a before insert and before update trigger on Case that links to a contact and its account by email domain, using maps to optimize domain-based lookups.

Implement a before insert account trigger to prevent duplicates by checking the entered email against existing accounts and their related contacts, using add error for validation.

Explore how to prevent undelete of account records using an after undelete trigger in Salesforce Apex, leveraging Trigger.new and avoiding SQL queries to raise errors during restore.

Learn how to use an after insert trigger to update an account's description with its record ID, handling read-only trigger records by creating a new instance and performing DML.

Learn to write robust Apex triggers by using a single trigger per object, bulkified logic, and handler frameworks, with comments, comprehensive unit tests, and governance-limit awareness.

Explore how to prevent recursive triggers in Salesforce Apex triggers by understanding recursion, governor limits, and techniques to run trigger logic only once, including before insert scenarios.

Explore techniques to avoid recursion in Salesforce apex triggers, using a static boolean flag or a static set of record IDs, plus handler-based best practices for one trigger per object.

Create and run apex test classes to validate triggers, cover positive and negative scenarios, and ensure production deployment readiness via annotations, test setup, and system assertions for 75%+ code coverage.

Learn to write trigger test classes in Salesforce, using seeAllData, test setup, test visible, and assertions. Cover bulk and single-record scenarios and understand deployment requirements and 75% test coverage.

Learn practical before trigger scenarios in Salesforce Apex, including case before insert, opportunity owner changes, account rating updates, and error handling using before hooks, context variables, and map-based logic.

Explore after trigger scenarios in Salesforce Apex, including auto-creating contacts from an account count and updating related accounts and cases.

Explore interview scenarios and questions for Salesforce apex triggers and test classes, and connect with the instructor on various platforms; consider Force Galaxy Salesforce trainings for admin or development roles.