Get a field value from a SObject List Apex

Question

I'm facing with the current problem. I have the following code which is a list of SObject and I want to get "CreatedDate" field. I really appreciate ur time and comments, thanks.

public static Object testMeth() {
    List<SObject> leadsAndOpps = new List<SObject>();
    List<Lead> lstLead = [Select Id, Name, CreatedDate FROM Lead];
    List<Opportunity> lstOpp = [Select Id, Name, CreatedDate FROM Opportunity];

    //Assign first and second List to Sobject List
    leadsAndOpps.addAll(lstLead);
    leadsAndOpps.addAll(lstOpp);

    for(SObject lstExa : leadsAndOpps) {
        String getName = (String)lstExa.get('Name'); = This example works cool
        DateTime getDateVal = (DateTime)lstExa.get(CreatedDate); = Variable doesn't exists
    }
 return leadsAndOpps;
}

Answer 1

The field API Name is represented by a string in the SObject.get() method. It should be fine if you write 'CreatedDate' in quotes. What you're now passing in is interpreted as an undefined variable named CreatedDate.