package class1_2_ExtendingAnInterface;

import java.util.ArrayList;
import java.util.List;

public class ListExample {
    public static void main(String[] args) {
        List<Double> l = new ArrayList<Double>();

        l.add(5.0);
//        l.add(1);

        for(Object o: l) {
            if(o instanceof Double) {
                Double d = (Double)o;
                System.out.println("Our double is: "+d);
            } else {
                System.out.println("Warning! Not a double");
            }
        }
    }
}