public class test1234{
    public static void main1(){
       /* List<Opportunity> ol = new List<Opportunity>();
        for(Integer i=1;i<=5;i++){
            Opportunity opl = new Opportunity();
            opl.Name='test'+i;
            opl.StageName = 'Prospecting';
            opl.CloseDate=Date.today();
            ol.add(opl);
        }
        insert ol;*/
         // First, query for the opportunities you want to update
    List<Opportunity> oppsToUpdate = [SELECT Id, Name,StageName FROM Opportunity WHERE Name = 'Today1' OR Name='Today2'];
      system.debug('@@@@ reocrds'+ oppsToUpdate);
    // Then, make the changes to the records
    for(Opportunity opp : oppsToUpdate) {
        opp.StageName = 'Closed Won';
    }
    
    // Finally, update the records in the database
    update oppsToUpdate;
    }
   
    
}