List<double[]> x = new ArrayList<double[]>();
x.add(new double[]={1,2,3,4,54,6});  

elementy 1,2,3,4,54,6 są dodawane do x

x.get(0) ---> returns 1

Ale robiąc to, dodaje się adres tablicy? czemu

     List<double[]> x = new ArrayList<double[]>();
    double[] name=new double[5];
    name[0]=1
    name[1]=3;
    name[2]=3;
        .
        . 
        . 
        .
    x.add(name);
    getting x.get(0) ---> returns @as12cd2 (address of the array)