java 备忘录模式

package memento;/** * Client 客户端类 * @author Administrator * */public class MementoMain {public static void main(String[] args) {Originator org = new Originator();org.setState("ON");Memento m = org.createMemento();Creater c= new Creater();c.saveMemento(m);org.setState("OFF");org.restoreMemento(c.readMemento());System.out.println(org.getState());}}

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