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Apex Classes: An apex class is a blueprint from which Objects are created Classes consist of attributes and methods Classes may contain other classes, known as inner classes (one level deep nested classes) Static attributes and methods can only be declared in a top-level class definition Exception class must be extended in case you want to create new extension classes Classes can be enabled or disabled for different profiles   Syntax: private | public | global [virtual | abstract | with sharing | without sharing | (none)] Class className [implements interfaceName | (none)] [extends classOrInterfaceName | (none)] { // Class … Read More

Apex Data Types include: Primitive Enum sObject Collection   Primitive Data Types: Include the following: Boolean Date Date/Time Time ID Integer Long Double Decimal String Blob Object   Enum Data Types Is an abstract data type that allows you to store the values of a finite set of identifiers Defined using the keyword ‘enum’ Built-in enums viz. System.StatusCode returns API error codes Some enum methods: Values() – returns a list of values for the enum Name() – returns the name of the enum   sObject Data Types Represents Objects (Standard and Custom) in Salesforce.com Can be either strongly typed or … Read More