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How class is defined in Apex?
As in Java, you can create classes in Apex. A class is a template or blueprint from which objects are created. An object is an instance of a class. For example, the PurchaseOrder class describes an entire purchase order, and everything that you can do with a purchase order.
How do you define a class in Salesforce?
Generally in salesforce to define a class you must use “class” keyword followed by access specifier. here access specifier and ‘class’ and class names are mandatory for every class in salesforce.
What is Apex trigger?
Apex triggers enable you to perform custom actions before or after events to records in Salesforce, such as insertions, updates, or deletions. Triggers can be defined for top-level standard objects, such as Account or Contact, custom objects, and some standard child objects. Triggers are active by default when created.
What does == mean in Apex?
Equality operator. Unlike Java, == in Apex compares object value equality not reference equality, except for user-defined types. Therefore: For sObjects and sObject arrays, == performs a deep check of all sObject field values before returning its result. Likewise for collections and built-in Apex objects.
What does apex predator mean?
: a predator at the top of a food chain that is not preyed upon by any other animal The archipelago also harbors some of the highest densities in the world of so-called apex predators, the sharks, groupers and jacks who have no natural predators of their own but whose numbers have been depleted elsewhere by fishermen.—
What are classes, objects, and interfaces in apex?
You’ll define, instantiate, and extend classes, and you’ll work with interfaces, Apex class versions, properties, and other related class concepts. As in Java, you can create classes in Apex. A class is a template or blueprint from which objects are created. An object is an instance of a class.
Do you have to declare classes as global in apex?
All classes that contain methods defined with the webservice keyword must be declared as global. If a method or inner class is declared as global, the outer, top-level class must also be defined as global. The with sharing and without sharing keywords specify the sharing mode for this class.
How is a variable defined in apex programming?
A variable, Method is defined with the static keyword is initialized once and associated with the class. Static variables, methods can be called by class name directly without creating the instance of a class. A constant, Method is defined with the final keyword can’t be overridden.
What does with sharing mean in apex classes?
With Sharing This is a special feature of Apex Classes in Salesforce. When a class is specified with ‘With Sharing’ keyword then it has following implications: When the class will get executed, it will respect the User’s access settings and profile permission.