It is a kind of proprietary language, which is developed by Salesforce. A strongly typed and object oriented language that allows developers to execute flow and transaction statements on the platform server which is in conjunction with calls to the salesforce. Its aim is to help the salesforce programmer beginners in learning apex, which brings you an intermediate level of expertise during the process of programming, which covers all important aspects from apex along with full hands on experience.
Class is a kind of template Which is created from apex objects that are created, they consist of other classes with the user defined methods, variables and static initialization code. After when we save successfully, variables are invoked by other apex codes helped in methods which have been designated with web services keyword. It enables us to create and manage the apex classes from setup in a quick find box, They use developer console for additional development functionality. They may write class methods according to the syntax outlined in apex code developer's guide.
By consuming a WSDL document which is stored on a local drive, they can develop automatically. Which allows the developers to make call outs for the external services in apex. In developer edition organization we can create, edit, delete or add the user interface of salesforce. By using the metadata API deployment only we can change apex, salesforce supports its users by providing its extensions for visual codes or for its migration tools, but not the part of our salesforce and also for the purposes of subscription agreements. By creating an apex class, we can perform various actions.
We create it in apex from developers console, along with salesforce eclipse IDE and from apex class details page. For creating a class, the developer needs to follow the following steps.
For creating class from salesforce IDE, we require some steps they are,
Creating the class by using apex class detail page is another way for creating class, for this we need to follow some steps they are,
The structure of the class includes syntax that contains the combination of the access modifiers, sharing modes, class name, and also class body, we may look at all the further options.
Salesforce apex classes include three kinds of access modifiers, they are private, public and global.
It allows different methods for sharing the class they are, with sharing, which give respect for the user access settings and profile permissions.
For defining methods, we need to specify the following.
We can use the following syntax for defining methods.
We need to follow to specify the following to declare the variable.
It is similar to variables. We can do additional things with code for the property value before it returned. Those properties may use to validate the date just before when the data are changed. We need to follow this syntax in the body to declare a property.
There is no need for purchasing the infrastructure. It provides security for applications with full authentication for the process to access the applications. It is easy to develop that exist on applications, which provides on demand and different tenant salesforce back end databases.
Unlike other programming languages it is not easy to create threads, not possible for temporary files in apex. Which is important to keep in mind that the application created by them must be able to handle multiple documents, and all the requests return a huge collection of records from the database, those cannot show elements on the user interface.
Class is a blueprint from where objects are created, these classes are similar to java classes. Invoice processor describes the class with all actions and methods which can be performed on the invoice, that is in context. Knowledge and development of the platform are required, apex is one of the best programming languages That has to be used with salesforce, Which assumes it like we already have set up salesforce to be used for our apex programming.