Java 构造函数和字段初始化顺序

I aware that Java object constructors implicitly initialize their instance's non-static fields. However, I'm unsure of the order that this happens in a class hierarchy. For example:

abstract public class AbstractPieceSequence implements PieceSequence
{
    private Tetromino current;
    private Tetromino preview;

    public AbstractPieceSequence()
    {
        advance();
    }

    @Override
    public final void advance()
    {
        if (preview == null) {
            current = getNextPiece();
            preview = getNextPiece();
        } else {
            current = preview;
            preview = getNextPiece();
        }
    }

    abstract protected Tetromino getNextPiece();
}

<小时>

public class ShufflePieceSequence extends AbstractPieceSequence
{
    private List<Shape> bag = new LinkedList<Shape>();

    @Override
    protected Tetromino getNextPiece()
    {
        if (bag.size() == 0) {
            Collections.addAll(bag, Shape.I, Shape.J, Shape.L, Shape.O, Shape.S, Shape.T, Shape.Z);
        }

        return Tetromino.tetrominoes.get(bag.remove(0));
    }
}

父类的构造函数调用子类中的一个方法，该方法抛出一个异常作为List的值.bag 当前为空.