composite.java

来自「《Java与模式》一书的源代码」· Java 代码 · 共 30 行

package com.javapatterns.visitor.parts;

import java.util.Vector;

abstract class Composite extends Equipment
{
    private Vector parts = new Vector(10);

    public Composite()
    {
    }

    public double price()
    {
        double total = 0;

        for (int i = 0; i < parts.size(); i++)
        {
            total += ((Equipment)parts.get(i)).price();
        }

        return total;
    }

    public void add(Equipment equip)
    {
        parts.add(equip);
    }
}