trigger Handler basic for salesforce

simple_Trigger_Handler.cls

public class SObject {
        public static void run(){
            switch on Trigger.operationType {
                when BEFORE_INSERT {
                    //Perform Before Insert logic'
                    System.debug('BEFORE INSERT FIRED');' 
                } when BEFORE_UPDATE {
                    //perform Before Update logic
                } when BEFORE_DELETE {
                    //perform Before Delete logic
                } when AFTER_INSERT {
                    //perform After Insert logic
                } when AFTER_UPDATE {
                    //Perform After Update logic
                } when AFTER_DELETE {
                    //Perform After Delete logic
                } when AFTER_UNDELETE {
                    //Perform After UnDelete logic
                }
            }
        }
    };