Apex Tutorial

● Apex

✦Introduction about tutorial

✦Overview

✦features

● Apex Basics

✦Datatypes

✦Primitive datatypes

✦Primitive-Integer

✦Primitive-Double

✦Primitive-Long

✦Primitive-Date

✦Primitive-Datetime

✦Primitive-String

✦Primitive-ID

✦Primitive-Boolean

✦Collection-Lists

✦Collection-Sets

✦Collection-Maps

✦sObject

✦Enums

✦Classes

✦Objects

✦Interfaces

✦Variables and naming rules

✦scope of variables

✦comments

✦constants

● Apex Expressions and Operators

✦Overview

✦Expressions

✦Expression Operators

✦Arithmetic Operator

✦Assignment Operator

✦bitwise Operator

✦logical Operator

✦relational Operator

✦Safe Navigation Operator

✦Null Coalescing Operator

✦Assignment Statements

✦Operator Precedence

● Apex Control flow

✦if else

✦if else if

✦nested if

✦switch

✦for

✦nested for loop

✦do while

✦while

✦nested while

✦break

✦continue

● Apex String

✦Overview

✦String to array

✦escape sequence

✦String operations

✦string functions

● Apex Array

✦Overview

✦Array or List

✦Access array elements

✦loop array

✦modify array

✦array methods

● Apex Set

✦Overview

✦Access Set elements

✦loop Set

✦modify Set

✦Set methods

● Apex map

✦Overview

✦Access map elements

✦loop map

✦modify map

✦map methods

● Apex Enum

✦Overview

✦Modify Enum

✦Enum functions

● Apex Classes, Objects, and Interfaces

✦Overview

✦Classes

✦Apex Class Definition

✦Class Variables

✦Class Methods

✦Using Constructors

✦Access Modifiers

✦Static and Instance Methods

✦Apex Properties

✦Extending a Class

✦Interfaces

✦Custom Iterators

● Apex Keywords

✦final Keyword

✦instanceof Keyword

✦super Keyword

✦this Keyword

✦transient Keyword

✦with sharing Keyword

✦without sharing Keyword

✦inherited sharing Keyword

● Apex Annotations

✦Overview

✦AuraEnabled Annotation

✦Deprecated Annotation

✦Future Annotation

✦InvocableMethod Annotation

✦InvocableVariable Annotation

✦IsTest Annotation

✦JsonAccess Annotation

✦NamespaceAccessible Annotation

✦ReadOnly Annotation

✦RemoteAction Annotation

✦SuppressWarnings Annotation

✦TestSetup Annotation

✦TestVisible Annotation

✦Apex REST Annotations

● Apex Naming Conventions

✦Overview

✦Name Shadowing

✦Namespace Prefix

✦System Namespace

✦Schema Namespace

● Apex sObjects

✦Overview

✦sObject Types

✦Accessing SObject Fields

✦Validating sObjects and Fields

● Apex Data Manipulation Language

✦Overview

✦How DML Works

✦Adding and Retrieving Data With DML

✦DML Statements vs. Database Class Methods

✦DML Operations As Atomic Transactions

✦DML Operations

✦Inserting Records

✦Updating Records

✦Upserting Records

✦Merging Records

✦Deleting Records

✦Restoring Deleted Records

✦Converting Leads

✦Exception Handling

✦Database Class Method Result Objects

✦Returned Database Errors

● Apex SOQL and SOSL

✦overview

✦SOQL and SOSL Queries

✦SOQL and SOSL Query examples

✦SOQL Aggregate Functions

✦Polymorphic Relationships in SOQL Queries

✦Using Apex Variables in SOQL and SOSL Queries

✦Querying All Records with a SOQL Statement

✦SOQL For Loops

● Apex methods Database

✦convertLead(leadToConvert, allOrNone)

✦convertLead(leadsToConvert, allOrNone)

✦convertLead(leadToConvert, dmlOptions)

✦convertLead(leadsToConvert, dmlOptions)

✦convertLead(leadToConvert, allOrNone, accessLevel)

✦convertLead(leadsToConvert, allOrNone, accessLevel)

✦convertLead(leadToConvert, dmlOptions, accessLevel)

✦convertLead(leadsToConvert, dmlOptions, accessLevel)

✦countQuery(query)

✦countQuery(query, accessLevel)

✦countQueryWithBinds(query, bindMap, accessLevel)

✦delete(recordToDelete, allOrNone)

✦delete(recordsToDelete, allOrNone)

✦delete(recordID, allOrNone)

✦delete(recordIDs, allOrNone)

✦delete(recordToDelete, allOrNone, accessLevel)

✦delete(recordsToDelete, allOrNone, accessLevel)

✦delete(recordID, allOrNone, accessLevel)

✦delete(recordIDs, allOrNone, accessLevel)

✦deleteAsync(sobjects, callback)

✦deleteAsync(sobject, callback)

✦deleteAsync(sobjects)

✦deleteAsync(sobject)

✦deleteAsync(sobjects, callback, accessLevel)

✦deleteAsync(sobject, callback, accessLevel)

✦deleteAsync(sobjects, accessLevel)

✦deleteAsync(sobject, accessLevel)

✦deleteImmediate(sobjects)

✦deleteImmediate(sobject)

✦deleteImmediate(sobjects, accessLevel)

✦deleteImmediate(sobject, accessLevel)

✦emptyRecycleBin(recordIds)

✦emptyRecycleBin(obj)

✦emptyRecycleBin(listOfSObjects)

✦executeBatch(batchClassObject)

✦executeBatch(batchClassObject, scope)

✦getAsyncDeleteResult(deleteResult)

✦getAsyncDeleteResult(asyncLocator)

✦getAsyncLocator(result)

✦getAsyncSaveResult(saveResult)

✦getAsyncSaveResult(asyncLocator)

✦getCursor(query)

✦getCursor(query, accessLevel)

✦getCursorWithBinds(query, bindMap, accessLevel)

✦getDeleted(sObjectType, startDate, endDate)

✦getQueryLocator(staticSoqlQueryResult)

✦getQueryLocator(query)

✦getQueryLocator(staticSoqlQueryResult, accessLevel)

✦getQueryLocator(query, accessLevel)

✦getQueryLocatorWithBinds(query, bindMap, accessLevel)

✦getUpdated(sobjectType, startDate, endDate)

✦insert(recordToInsert, allOrNone)

✦insert(recordsToInsert, allOrNone)

✦insert(recordToInsert, dmlOptions)

✦insert(recordsToInsert, dmlOptions)

✦insert(recordToInsert, allOrNone, accessLevel)

✦insert(recordsToInsert, allOrNone, accessLevel)

✦insert(recordToInsert, dmlOptions, accessLevel)

✦insert(recordsToInsert, dmlOptions, accessLevel)

✦insertAsync(sobjects, callback)

✦insertAsync(sobject, callback)

✦insertAsync(sobjects)

✦insertAsync(sobject)

✦insertAsync(sobjects, callback, accessLevel)

✦insertAsync(sobject, callback, accessLevel)

✦insertAsync(sobjects, accessLevel)

✦insertAsync(sobject, accessLevel)

✦insertImmediate(sobjects)

✦insertImmediate(sobject)

✦insertImmediate(sobjects, accessLevel)

✦insertImmediate(sobject, accessLevel)

✦merge(mergeToRecord, duplicateId)

✦merge(mergeToRecord, duplicateRecord)

✦merge(mergeToRecord, duplicateIds)

✦merge(mergeToRecord, duplicateRecords)

✦merge(mergeToRecord, duplicateId, allOrNone)

✦merge(mergeToRecord, duplicateRecord, allOrNone)

✦merge(mergeToRecord, duplicateIds, allOrNone)

✦merge(mergeToRecord, duplicateRecords, allOrNone)

✦merge(mergeToRecord, duplicateId, accessLevel)

✦merge(mergeToRecord, duplicateRecord, accessLevel)

✦merge(mergeToRecord, duplicateIds, accessLevel)

✦merge(mergeToRecord, duplicateRecords, accessLevel)

✦merge(mergeToRecord, duplicateId, allOrNone, accessLevel)

✦merge(mergeToRecord, duplicateRecord, allOrNone, accessLevel)

✦merge(mergeToRecord, duplicateIds, allOrNone, accessLevel)

✦merge(mergeToRecord, duplicateRecords, allOrNone, accessLevel)

✦query(queryString)

✦query(queryString, accessLevel)

✦queryWithBinds(queryString, bindMap, accessLevel)

✦releaseSavepoint(databaseSavepoint)

✦rollback(databaseSavepoint)

✦setSavepoint()

✦undelete(recordToUndelete, allOrNone)

✦undelete(recordsToUndelete, allOrNone)

✦undelete(recordID, allOrNone)

✦undelete(recordIDs, allOrNone)

✦undelete(recordToUndelete, allOrNone, accessLevel)

✦undelete(recordsToUndelete, allOrNone, accessLevel)

✦undelete(recordID, allOrNone, accessLevel)

✦undelete(recordIDs, allOrNone, accessLevel)

✦update(recordToUpdate, allOrNone)

✦update(recordsToUpdate, allOrNone)

✦update(recordToUpdate, dmlOptions)

✦update(recordsToUpdate, dmlOptions)

✦update(recordToUpdate, allOrNone, accessLevel)

✦update(recordsToUpdate, allOrNone, accessLevel)

✦update(recordToUpdate, dmlOptions, accessLevel)

✦update(recordsToUpdate, dmlOptions, accessLevel)

✦upsert(recordToUpsert, externalIdField, allOrNone)

✦upsert(recordsToUpsert, externalIdField, allOrNone)

✦upsert(recordToUpsert, externalIdField, allOrNone, accessLevel)

✦upsert(recordsToUpsert, externalIdField, allOrNone, accessLevel)

✦updateAsync(sobjects, callback)

✦updateAsync(sobject, callback)

✦updateAsync(sobjects)

✦updateAsync(sobject)

✦updateAsync(sobjects, callback, accessLevel)

✦updateAsync(sobject, callback, accessLevel)

✦updateAsync(sobjects, accessLevel)

✦updateAsync(sobject, accessLevel)

✦updateImmediate(sobjects)

✦updateImmediate(sobject)

✦updateImmediate(sobjects, accessLevel)

✦updateImmediate(sobject, accessLevel)

● Apex methods date

✦addDays(additionalDays)

✦addMonths(additionalMonths)

✦addYears(additionalYears)

✦day()

✦dayOfYear()

✦daysBetween(secondDate)

✦daysInMonth(year, month)

✦format()

✦isLeapYear(year)

✦isSameDay(dateToCompare)

✦month()

✦monthsBetween(secondDate)

✦newInstance(year, month, day)

✦parse(stringDate)

✦today()

✦toStartOfMonth()

✦toStartOfWeek()

✦valueOf(stringDate)

✦valueOf(fieldValue)

✦year()

● Apex methods datetime

✦addDays(additionalDays)

✦addHours(additionalHours)

✦addMinutes(additionalMinutes)

✦addMonths(additionalMonths)

✦addSeconds(additionalSeconds)

✦addYears(additionalYears)

✦date()

✦dateGMT()

✦day()

✦dayGmt()

✦dayOfYear()

✦dayOfYearGmt()

✦format()

✦format(dateFormatString)

✦format(dateFormatString, timezone)

✦formatGmt(dateFormatString)

✦formatLong()

✦getTime()

✦hour()

✦hourGmt()

✦isSameDay(dateToCompare)

✦millisecond()

✦millisecondGmt()

✦minute()

✦minuteGmt()

✦month()

✦monthGmt()

✦newInstance(milliseconds)

✦newInstance(date, time)

✦newInstance(year, month, day)

✦newInstance(year, month, day, hour, minute, second)

✦newInstanceGmt(date, time)

✦newInstanceGmt(year, month, date)

✦newInstanceGmt(year, month, date, hour, minute, second)

✦now()

✦parse(datetimeString)

✦second()

✦secondGmt()

✦time()

✦timeGmt()

✦valueOf(dateTimeString)

✦valueOf(fieldValue)

✦valueOfGmt(dateTimeString)

✦year()

✦yearGmt()

● Apex methods list

✦add(listElement)

✦add(index, listElement)

✦addAll(fromList)

✦addAll(fromSet)

✦clear()

✦clone()

✦contains(listElement)

✦deepClone(preserveId, preserveReadonlyTimestamps, preserveAutonumber)

✦equals(list2)

✦get(index)

✦getSObjectType()

✦hashCode()

✦indexOf(listElement)

✦isEmpty()

✦iterator()

✦remove(index)

✦set(index, listElement)

✦size()

✦sort()

✦toString()

● Apex methods Map

✦clear()

✦clone()

✦containsKey(key)

✦deepClone()

✦equals(map2)

✦get(key)

✦getSObjectType()

✦hashCode()

✦isEmpty()

✦keySet()

✦put(key, value)

✦putAll(fromMap)

✦putAll(sobjectArray)

✦remove(key)

✦size()

✦toString()

✦values()

● Apex methods Math

✦abs(decimalValue)

✦abs(doubleValue)

✦abs(integerValue)

✦abs(longValue)

✦acos(decimalAngle)

✦acos(doubleAngle)

✦asin(decimalAngle)

✦asin(doubleAngle)

✦atan(decimalAngle)

✦atan(doubleAngle)

✦atan2(xCoordinate, yCoordinate)

✦cbrt(decimalValue)

✦cbrt(doubleValue)

✦ceil(decimalValue)

✦ceil(doubleValue)

✦cos(decimalAngle)

✦cos(doubleAngle)

✦cosh(decimalAngle)

✦cosh(doubleAngle)

✦exp(exponentDecimal)

✦exp(exponentDouble)

✦floor(decimalValue)

✦floor(doubleValue)

✦log(decimalValue)

✦log(doubleValue)

✦log10(decimalValue)

✦log10(doubleValue)

✦max(decimalValue1, decimalValue2)

✦max(doubleValue1, doubleValue2)

✦max(integerValue1, integerValue2)

✦max(longValue1, longValue2)

✦min(decimalValue1, decimalValue2)

✦min(doubleValue1, doubleValue2)

✦min(integerValue1, integerValue2)

✦min(longValue1, longValue2)

✦mod(integerValue1, integerValue2)

✦mod(longValue1, longValue2)

✦pow(doubleValue, exponent)

✦random()

✦rint(decimalValue)

✦rint(doubleValue)

✦round(doubleValue)

✦round(decimalValue)

✦roundToLong(decimalValue)

✦roundToLong(doubleValue)

✦signum(decimalValue)

✦signum(doubleValue)

✦sin(decimalAngle)

✦sin(doubleAngle)

✦sinh(decimalAngle)

✦sinh(doubleAngle)

✦sqrt(decimalValue)

✦sqrt(doubleValue)

✦tan(decimalAngle)

✦tan(doubleAngle)

✦tanh(decimalAngle)

✦tanh(doubleAngle)

● Apex methods object

✦equals(obj)

✦hashCode()

✦toString()

● Apex methods set

✦add(setElement)

✦addAll(fromList)

✦addAll(fromSet)

✦clear()

✦clone()

✦contains(setElement)

✦containsAll(listToCompare)

✦containsAll(setToCompare)

✦equals(set2)

✦hashCode()

✦isEmpty()

✦remove(setElement)

✦removeAll(listOfElementsToRemove)

✦removeAll(setOfElementsToRemove)

✦retainAll(listOfElementsToRetain)

✦retainAll(setOfElementsToRetain)

✦size()

✦toString()

● Apex methods sobject

✦addError(errorMsg)

✦addError(errorMsg, escape)

✦addError(exceptionError)

✦addError(exceptionError, escape)

✦addError(fieldName, errorMsg)

✦addError(fieldToken, errorMsg)

✦addError(fieldName, errorMsg, escape)

✦addError(fieldToken, errorMsg, escape)

✦clear()

✦clone(preserveId, isDeepClone, preserveReadonlyTimestamps, preserveAutonumber)

✦get(fieldName)

✦get(field)

✦getCloneSourceId()

✦getErrors()

✦getOptions()

✦getPopulatedFieldsAsMap()

✦getSObject(fieldName)

✦getSObject(field)

✦getSObjects(fieldName)

✦getSObjectType()

✦getQuickActionName()

✦hasErrors()

✦isClone()

✦isSet(fieldName)

✦isSet(field)

✦put(fieldName, value)

✦put(field, value)

✦putSObject(fieldName, value)

✦recalculateFormulas()

✦setOptions(DMLOptions)

● Apex methods String

✦abbreviate(maxWidth)

✦abbreviate(maxWidth, offset)

✦capitalize()

✦center(size)

✦center(size, paddingString)

✦charAt(index)

✦codePointAt(index)

✦codePointBefore(index)

✦codePointCount(beginIndex, endIndex)

✦compareTo(secondString)

✦contains(substring)

✦containsAny(inputString)

✦containsIgnoreCase(substring)

✦containsNone(inputString)

✦containsOnly(inputString)

✦containsWhitespace()

✦countMatches(substring)

✦deleteWhitespace()

✦difference(secondString)

✦endsWith(suffix)

✦endsWithIgnoreCase(suffix)

✦equals(secondString)

✦equals(stringOrId)

✦equalsIgnoreCase(secondString)

✦escapeCsv()

✦escapeEcmaScript()

✦escapeHtml3()

✦escapeHtml4()

✦escapeJava()

✦escapeSingleQuotes(stringToEscape)

✦escapeUnicode()

✦escapeXml()

✦format(stringToFormat, formattingArguments)

✦fromCharArray(charArray)

✦getChars()

✦getCommonPrefix(strings)

✦getLevenshteinDistance(stringToCompare)

✦getLevenshteinDistance(stringToCompare, threshold)

✦hashCode()

✦indexOf(substring)

✦indexOf(substring, index)

✦indexOfAny(substring)

✦indexOfAnyBut(substring)

✦indexOfChar(character)

✦indexOfChar(character, startIndex)

✦indexOfDifference(stringToCompare)

✦indexOfIgnoreCase(substring)

✦indexOfIgnoreCase(substring, startPosition)

✦isAllLowerCase()

✦isAllUpperCase()

✦isAlpha()

✦isAlphaSpace()

✦isAlphanumeric()

✦isAlphanumericSpace()

✦isAsciiPrintable()

✦isBlank(inputString)

✦isEmpty(inputString)

✦isNotBlank(inputString)

✦isNotEmpty(inputString)

✦isNumeric()

✦isNumericSpace()

✦isWhitespace()

✦join(iterableObj, separator)

✦lastIndexOf(substring)

✦lastIndexOf(substring, endPosition)

✦lastIndexOfChar(character)

✦lastIndexOfChar(character, endIndex)

✦lastIndexOfIgnoreCase(substring)

✦lastIndexOfIgnoreCase(substring, endPosition)

✦left(length)

✦leftPad(length)

✦leftPad(length, padStr)

✦length()

✦mid(startIndex, length)

✦normalizeSpace()

✦offsetByCodePoints(index, codePointOffset)

✦remove(substring)

✦removeEnd(substring)

✦removeEndIgnoreCase(substring)

✦removeStart(substring)

✦removeStartIgnoreCase(substring)

✦repeat(numberOfTimes)

✦repeat(separator, numberOfTimes)

✦replace(target, replacement)

✦replaceAll(regExp, replacement)

✦replaceFirst(regExp, replacement)

✦reverse()

✦right(length)

✦rightPad(length)

✦rightPad(length, padStr)

✦split(regExp)

✦split(regExp, limit)

✦splitByCharacterType()

✦splitByCharacterTypeCamelCase()

✦startsWith(prefix)

✦startsWithIgnoreCase(prefix)

✦stripHtmlTags()

✦substring(startIndex)

✦substring(startIndex, endIndex)

✦substringAfter(separator)

✦substringAfterLast(separator)

✦substringBefore(separator)

✦substringBeforeLast(separator)

✦substringBetween(tag)

✦substringBetween(open, close)

✦swapCase()

✦toLowerCase()

✦toLowerCase(locale)

✦toUpperCase()

✦toUpperCase(locale)

✦trim()

✦uncapitalize()

✦unescapeCsv()

✦unescapeEcmaScript()

✦unescapeHtml3()

✦unescapeHtml4()

✦unescapeJava()

✦unescapeUnicode()

✦unescapeXml()

✦valueOf(dateToConvert)

✦valueOf(datetimeToConvert)

✦valueOf(decimalToConvert)

✦valueOf(doubleToConvert)

✦valueOf(integerToConvert)

✦valueOf(longToConvert)

✦valueOf(toConvert)

✦valueOfGmt(datetimeToConvert)

● Apex methods Time

✦addHours(additionalHours)

✦addMilliseconds(additionalMilliseconds)

✦addMinutes(additionalMinutes)

✦addSeconds(additionalSeconds)

✦hour()

✦millisecond()

✦minute()

✦newInstance(hour, minutes, seconds, milliseconds)

✦second()

Apex methods Math → atan(decimalAngle)

Tutorials

Popular Languages

All Interpreters/IDE

vb.net(visualbasic)

Quick Links

Advertise with us About us Contact us Disclaimer Privacy Policy Terms & Conditions

© 2025 Tutorialix.com. All rights reserved.