Show Event Details in Lead Page.

I have Already implement this scenario please have a look.

public with sharing class Event_field_on_lead {
    public static String ldPrefix =  Lead.sObjectType.getDescribe().getKeyPrefix();
    public static void updateEvent_field_on_lead(Set<ID> leadIds){
        //Query all Leads and task-event child relationships//
        List<Lead> Leads = [SELECT Id, LastActivityDate,
                            (SELECT Id, WhoId, Meeting_Status__c, ActivityDate FROM Events )
                            FROM Lead WHERE ID IN :leadIds];
        List<Lead> updateLeads = new List<Lead>();
        for (Lead l : Leads) {
            Integer count =  l.Events.size();
            if (count != 0) {
                for (Event e : l.Events){
                    if (l.LastActivityDate <= e.ActivityDate) {
                        l.Meeting__c = e.Meeting_Status__c;
                    }
                }
            } 
            updateLeads.add(l);
        }
        if(updateLeads.size()>0) {
            try{
                update updateLeads;
            }
            catch (Exception e) {
            }
        }
    }
}