Record Type from apex in Salesforce

The usual way to get a recordTypeId in Apex is to make a query like this:

[Select id from RecordType where sObjectType = 'XXXXX' and developerName ='YYYYY' ].id

XXXXX = SobjectType (object name)

YYYYY = Record Type Name (DeveloperName)

Example :

class AccountHelper

{

 

     public static String personRecordTypeId;

     public static String getPersonRecordTypeId(){

            

     if(AccountHelper.personRecordTypeId == null) 

     {

         AccountHelper.personRecordTypeId =[Select id from RecordType where sObjectType = 'Account'    and developerName ='Person Account' ].id

      }

           

      return AccountHelper.personRecordTypeId ;

}