Hi Everyone,
I want to update the account name field with account name+year in created date, if the records updated with name&year these records should not updated again and again only new records should update with name&year.

Facing issues with if condition, can you please help me out this along with test class.
Here is my code : 

public class batchAccountConUpdate implements database.Batchable<Sobject>{
    public database.QueryLocator start(database.BatchableContext bc){
        //fetch the Account record and its related Contact records 
     
          return database.getQueryLocator('select id,name,createdDate,(select id,name from Contacts) from Account');
    
    }
    public void execute(database.BatchableContext bc, List<Account> scope){
        List<Account> acc=new List<Account>();
        List<Contact> con=new List<Contact>();
        for(Account a:scope){
            //Converting DateTime to Date  method
            DateTime dt = a.CreatedDate;
            Date myDate = date.newinstance(dt.year(), dt.month(), dt.day());
            System.debug('My date is-----' + myDate);
            DateTime dt1 =a.CreatedDate;
            Date myDate1= dt1.date();
            System.debug('My date is-----' + myDate1);
          //  if(a.Name != a.Name+myDate1.year() && a.Name != a.Name+a.CreatedDate){
            if(a.Name.contains( myDate1.year() )){
                a.name=a.Name+myDate1.year();
                a.Description='Account name was Updated with the year in Created Date'; 
            acc.add(a);
            for(Contact c : a.contacts){
                c.FirstName=a.Name;
                c.LastName=c.Name;
                c.Department='through batch apex';
                con.add(c);
            }
             }
        }
        
         
        update acc;
        Update con;
    }
    public void finish(database.BatchableContext bc){
        system.debug('>>>>>>Finish');
    }
}
 

Thanks in Advance.