Apex Reference Guide

Apex Reference Guide
Apex DML Operations
ApexPages Namespace
AppLauncher Namespace
Approval Namespace
Auth Namespace
Cache Namespace
Canvas Namespace
ChatterAnswers Namespace
CommercePayments Namespace
ConnectApi Namespace
Database Namespace
Datacloud Namespace
DataSource Namespace
Dom Namespace
EventBus Namespace
Flow Namespace
Functions Namespace
KbManagement Namespace
LxScheduler Namespace
Messaging Namespace
Metadata Namespace
Process Namespace
QuickAction Namespace
Reports Namespace
Schema Namespace
Search Namespace
Sfc Namespace
Sfdc_Checkout Namespace
Site Namespace
Support Namespace
System Namespace
AccessType Enum
Address Class
Answers Class
ApexPages Class
Approval Class
Blob Class
Boolean Class
BusinessHours Class
Callable Interface
Cases Class
Comparable Interface
Continuation Class
Cookie Class
Crypto Class
Custom Metadata Type Methods
Custom Settings Methods
Database Class
Date Class
Datetime Class
Decimal Class
Double Class
EncodingUtil Class
Enum Methods
EventBus Class
Exception Class and Built-In Exceptions
FlexQueue Class
FeatureManagement Class
Formula Class
FormulaRecalcFieldError Class
FormulaRecalcResult Class
Http Class
HttpCalloutMock Interface
HttpRequest Class
HttpResponse Class
Id Class
Ideas Class
InstallHandler Interface
Integer Class
Integer Methods
JSON Class
JSONGenerator Class
JSONParser Class
JSONToken Enum
Limits Class
List Class
Location Class
LoggingLevel Enum
Long Class
Map Class
Matcher Class
Math Class
Messaging Class
MultiStaticResourceCalloutMock Class
Network Class
OrgLimit Class
OrgLimits Class
PageReference Class
Packaging Class
Pattern Class
Queueable Interface
QueueableContext Interface
QuickAction Class
Quiddity Enum
RemoteObjectController
Request Class
ResetPasswordResult Class
RestContext Class
RestRequest Class
RestResponse Class
SandboxPostCopy Interface
Schedulable Interface
SchedulableContext Interface
Schema Class
Search Class
Security Class
SelectOption Class
Set Class
Site Class
SObject Class
SObjectAccessDecision Class
StaticResourceCalloutMock Class
String Class
StubProvider Interface
System Class
Test Class
Time Class
TimeZone Class
Trigger Class
TriggerOperation Enum
Type Class
UninstallHandler Interface
URL Class
UserInfo Class
UserManagement Class
Version Class
WebServiceCallout Class
WebServiceMock Interface
XmlStreamReader Class
XmlStreamWriter Class
TerritoryMgmt Namespace
TxnSecurity Namespace
UserProvisioning Namespace
VisualEditor Namespace
wave Namespace
Appendices
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Integer Class

Contains methods for the Integer primitive data type.

Namespace

System

Usage

For more information on integers, see Integer Data Type.

Integer Methods

The following are methods for Integer.

format()

Returns the integer as a string using the locale of the context user.

Signature

public String format()

Return Value

Type: String

Example

valueOf(stringToInteger)

Returns an Integer that contains the value of the specified String. As in Java, the String is interpreted as representing a signed decimal integer.

Signature

public static Integer valueOf(String stringToInteger)

Parameters

stringToInteger
Type: String

Return Value

Type: Integer

Example

valueOf(fieldValue)

Converts the specified object to an Integer. Use this method to convert a history tracking field value or an object that represents an Integer value.

Signature

public static Integer valueOf(Object fieldValue)

Parameters

fieldValue
Type: Object

Return Value

Type: Integer

Usage

Use this method with the OldValue or NewValue fields of history sObjects, such as AccountHistory, when the field type corresponds to an Integer type, like a number field.

Example:

Example