client.java

来自「《Java与模式》一书的源代码」· Java 代码 · 共 22 行

package com.javapatterns.memento.blackbox;

public class Client
{
    private static Originator o = new Originator();
    private static Caretaker c = new Caretaker();

    public static void main(String[] args)
    {
        o.setState("On");

        // Store internal state
        c.saveMemento(o.createMemento());

        // Continue changing originator
        o.setState("Off");

        // Restore saved state
        o.restoreMemento(c.retrieveMemento());
    }
}