memento.java

来自「《Java与模式》一书的源代码」· Java 代码 · 共 26 行

package com.javapatterns.memento.whiteboxcheckpoints;

import java.util.Vector;

public class Memento
{
    private Vector states;
    private int index;

    public Memento(Vector states, int index)
    {
        this.states = (Vector)states.clone();
        this.index = index;
    }

    Vector getStates()
    {
        return states;
    }

    int getIndex()
    {
        return this.index;
    }
}