Visitor Pattern Usage

Main.java

    public static void main(String[] args) {
        var ensemble = new Container(
                new Item[]{
                        new Box(2),
                        new Container(new Item[]{
                                new Box(3),
                                new Box(4)}
                        )});

        ensemble.visit(new PrinterVisitor());
        System.out.println();
        System.out.println("Total weight is: " + ensemble.visit(new WeightVisitor()));
    }