Creating APEX Class in Salesforce

Syntax of class:

Private | public | global

“Virtual | abstract | with sharing | without sharing | (none)”

Class implements     | (none)” “extends   | (none)”

{

// the body of the class

}

To create an Apex class, go to the following path Your Name  ---> SetupàApp setup--->Develop  ---> click on Apex classes  ---> click on "New" button.

*In the editor pane, enter the following code Public class Helloworld

{

}

Click on Quicksave  ---> Saves the Apex Code, making it available to be executed  ---> it makes us add and modify code. Save  --> savers the Apex Code, but that classes the class editor and returns to the Apex classes list.

*Add the static method to the above class Now Apex class become. Publish class Helloworld {

public static void sayyou( ) { System.debug ( 'you' );

}

*Now add an instance method. Now the Apex class became public class Helloworld

{// class creation

Public static void sayyou () { //adding static method to the class

}

Public void sayMe ( ) { //adding instance method to system debug (‘Me '); the class

Calling a class Method:

We have created the "Helloworld" class follow these steps to call its methods.

  1. Execute the following code in the Developer console to call the Helloworld class's static method.

*** To call a static method, we don't have to create an instance of the class. Helloworld say you (); Open Raw log, then "You" appears in the USER-DEBUG log.

  1. Now execute the following code in Developer's Console to call the Helloworld classes instance method.

Note:- To call an instance method, we first have to create an instance of the Helloworld class.

Helloworld h= new Helloworld ( );

h.say Me ( );

Open Raw log, then "Me" appears in the USER-DEBUG log.

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Alternation APEX Class Creation:

We can also create new Apex classes directly in the Developer Console.

  • Open the Developer Console.

  • Click the repository tab.

  • The setup Entity type panel lists the different items. We can view and edit in the Developer Console.

  • Click on classes, and then click the "New" button.

  • Enter "Message" for the name of the
  • new class and click "ok" bottom.
  • Add the following static method to the new class

public static string hellowMessage () {

return ( 'welcome to capital info solutions '):

}

  1. Click on "Save" button.

Examples 1:

Public class AccountCreation {

Public Account createAccount(String name){

Account a= new Account();

a.Name = name; insert a;

return a;

}

}

Go to the Developer console, and execute the following code

Account Creation ac = new Account Creation();

creating an instance for the above class. ac.CreateAccount('Osmania University');

calling a method

system.debug(ac);

check the account is created or not in the USER-DEBUG Log.

2.The following program is used fetch the Account Name from the account records by passing phone number.

Public class Fetch_Account_ Name_ From_Phone{ Public set<string> Fetch_ ACC_ Name(String P) { set <string> s1= new Set<string>();

List<Account> acc= “select id, Name from Account where phone”; for (Account a:acc)

{

String s=a.name; s1.add(s); }

System.debug('xxxxxxxxx' +s1); return s1;

}

}

Go to the Developer Console, and execute the following code. FetchAccountName_ From_Phone ft= new FetchAccountName_from_Phone (); ft.FetchAccName ('9052'); In the User-Debug Log all the accounts will come that has the phone number is 9052.

 

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