Annotations

Annotation                                         Description                                                                 Example

@isTest :

Denotes classes that only 

contain code used for 

testing your application. 

These classes don’t count 

against the total amount 

of Apex used by your 

organization. 

@isTest private class MyTest {

 // Methods for testing 

}

@isTest(

OnInstall=true):

Denotes a test class or 

test method that executes 

on package installation

@isTest(OnInstall=true)

private class TestClass {

@isTest(

SeeAllData=true):

Denotes a test class or 

test method that has access

to all data in the organization

including pre-existing data

that the test didnt create.

The default is false

@isTest(SeeAllData=true)

private class TestClass {

}

@deprecated :

Denotes methods, classes, 

exceptions, enums, 

interfaces, or variables 

that can no longer be 

referenced in subsequent 

releases of the managed 

package in which they 

reside

@deprecated

public void limitedShelfLife() {

}

@readOnly :

Denotes methods that 

can perform queries 

unrestricted by the number 

of returned rows limit for a 

request

@readOnly:

private void doQuery() {

}

@remoteAction :

Denotes Apex controller 

methods that JavaScript 

code can call from a 

Visualforce page via 

JavaScript remoting. The 

method must be static and 

either public or global.

@remoteAction:

global static String getId(

 String s) {

}

@restResource :

Denotes a class that 

is available as a REST 

resource. The class must 

be global. The urlMapping 

parameter is your 

resource's name and is 

relative to https://instance.

salesforce.com/services/

apexrest/.

@restResource(urlMapping=

'/Widget/*')

global with sharing class

 MyResource() {

}