Apex Annotations

Apex annotations in Salesforce are special declarations that provide additional functionality and information about classes, methods, or variables. They help the Apex compiler enforce specific behaviors and enable additional capabilities.

Here are some commonly used Apex annotations in Salesforce:

@AuraEnabled: Makes Apex methods available for client-side access in Lightning components.

@TestSetup: Creates test records used across all test methods within a test class.

@TestVisible: Makes private class methods and variables available to test methods in the same or different class.

@InvocableMethod: Exposes Apex methods to the process builder, flow builder, and API for custom automation.

@Deprecated: Marks Apex methods, variables, or classes as old and no longer used, but kept for backward compatibility.

@RemoteAction: Exposes Apex methods to be called from JavaScript on Visualforce pages.

@SuppressWarnings: Disables warnings for a specific class, method, or variable.

@ReadOnly: Marks fields as read-only, indicating they cannot be updated.

@Future: Indicates that an Apex method runs asynchronously in a separate thread after the current transaction is completed.

@IsTest: Marks Apex methods as test methods.

@HttpPut: Marks Apex REST methods that accept HTTP PUT requests.

@HttpDelete: Marks Apex REST methods that accept HTTP DELETE requests.

@HttpPost: Marks Apex REST methods that accept HTTP POST requests.

@HttpGet: Identifies methods that accept HTTP GET requests.

@HttpPatch: Identifies methods that accept HTTP PATCH requests.

@RestResource: Enables the exposure of an Apex class as a REST resource.

These annotations provide additional control and functionality to Apex code in Salesforce, allowing developers to customize and enhance their applications.