How to Write Schedule Class to update custom field and Send Email to User if condition is met on custom object in Salesforce

[vijayk3327]

In this post we are going to learn about How to Write Schedule class to update custom field and Send Email if condition is met on custom object Using Apex Method in Salesforce.

Use the Apex scheduler and the Schedulable interface if you have specific Apex classes that you want to run on a regular basis, or to run a batch Apex job using the Salesforce user interface. To know more details about Apex Triggers, Click Here →

👉 To get source code live demo link, Click Here.

Create Schedule Apex Class Controller
Step 1:- Create Apex Class : Schedule_customCredential.apxc

`global class Schedule_customCredential Implements Schedulable{
public static void EXECUTE(SchedulableContext SC){
updateCustomCre();
}

Public Static List<String> emailListStr = NEW List<String>();

public static void updateCustomCre(){
    try{  
        List<Custom_Credential__c> custCrdtItem = NEW List<Custom_Credential__c>();  
        List<Custom_Credential__c> custCrdtList = NEW List<Custom_Credential__c>();
        custCrdtList = [SELECT Id, Name, Credential_Landers__c, ClientId__c, User__c, User__r.Email, User__r.Name, HDFC_Credential__c, HDFC_Credential__r.Name FROM Custom_Credential__c WHERE Credential_Landers__c =NULL];
        FOR(Custom_Credential__c crt:custCrdtList){
            Custom_Credential__c crtObj = NEW Custom_Credential__c();
            crtObj.Credential_Landers__c='Custom Credential';
            crtObj.Id=crt.Id;
            custCrdtItem.add(crtObj);
            emailListStr.add(crt.User__r.Email);            
        }
        UPDATE custCrdtItem;
        //system.debug('custCrdtItem## ' + custCrdtItem);
        //system.debug('emailListStr## ' + emailListStr);

        sendEmailtoUser(emailListStr);
    }
    catch(Exception e){
        system.debug('Exception' + e.getMessage());
    }
}


public static void sendEmailtoUser(List<String> emailStr){
    try{
        FOR(String eml:emailListStr){
            Messaging.reserveSingleEmailCapacity(2);       
            Messaging.SingleEmailMessage mail = NEW Messaging.SingleEmailMessage();
            String[] toAddresses = NEW String[] {eml};
                mail.setToAddresses(toAddresses);
            //String[] ccAddresses = NEW String[] {'test@test.com'};
            //mail.setCcAddresses(ccAddresses);
            //mail.setReplyTo('');
            //mail.setSenderDisplayName('');
            mail.setSubject('Custom Credential Update');
            mail.setBccSender(FALSE);
            mail.setPlainTextBody('Custom Credential Updated Successfully');
            //mail.setHtmlBody('Your Link <a href=https://www.salesforce.com/>click here.</a>');
            Messaging.sendEmail(NEW Messaging.SingleEmailMessage[] { mail }); 
        }

    }catch(Exception e){
        system.debug('Exception '+ e.getMessage());
    }
}

}`

👉 To get source code live demo link, Click Here.