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.

2. 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 '):
}

7. 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.

 

Salesforce Tutorials

 

For in-depth understanding on Salesforce click on

• Introduction To Apex
• Salesforce Interview Questions & Answers
• Annotations in SalesForce
• Loops in SalesForce
• Apex Data Manipulation
• Salesforce Lightning Training