import java.util.ArrayList;

public class DoubleWrapper
{
    public static void main(String[] args)
    {
        ArrayList<Double> myList = new ArrayList<>();
        
        myList.add( new Double(7.0) ); 
        myList.add( new Double(4.0) );
        myList.add( new Double(9.0) );

        System.out.println( myList ); 
    }
 }