Apex Developer Guide

Apex Developer Guide
Release Notes
Getting Started with Apex
Writing Apex
Data Types and Variables
Control Flow Statements
Classes, Objects, and Interfaces
Classes
Interfaces
Keywords
Annotations
AuraEnabled Annotation
BeforeClass Annotation (Developer Preview)
Deprecated Annotation
Future Annotation
IntegrationTest Annotation (Developer Preview)
InvocableMethod Annotation
InvocableVariable Annotation
IsTest Annotation
JsonAccess Annotation
NamespaceAccessible Annotation
ReadOnly Annotation
RemoteAction Annotation
SuppressWarnings Annotation
TestSetup Annotation
TearDown Annotation (Developer Preview)
TestVisible Annotation
Apex REST Annotations
Classes and Casting
Differences Between Apex Classes and Java Classes
Class Definition Creation
Namespace Prefix
Apex Code Versions
Lists of Custom Types and Sorting
Using Custom Types in Map Keys and Sets
Working with Data in Apex
Document Your Apex Code
Running Apex
Debugging, Testing, and Deploying Apex
Apex Reference
Appendices
PDF

Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

Annotations

An Apex annotation modifies the way that a method or class is used, similar to annotations in Java. Annotations are defined with an initial @ symbol, followed by the appropriate keyword.

To add an annotation to a method, specify it immediately before the method or class definition. For example:

1global class MyClass {
2     @Future
3     Public static void myMethod(String a)
4     {
5          //long-running Apex code
6     }
7}

Apex supports these annotations.

You can use multiple annotations for the same class or method. Specify each annotation on a separate line immediately before the class or method definition. Some annotations can’t be used together. If applicable, these limitations are documented on the page for the annotation.