1700470884
1700470885
private String state=””；
1700470886
1700470887
public String getState（）{
1700470888
1700470889
return state；
1700470890
1700470891
}
1700470892
1700470893
public void setState（String state）{
1700470894
1700470895
this.state=state；
1700470896
1700470897
}
1700470898
1700470899
//创建一个备忘录
1700470900
1700470901
public Originator createMemento（）{
1700470902
1700470903
return this.clone（）；
1700470904
1700470905
}
1700470906
1700470907
//恢复一个备忘录
1700470908
1700470909
public void restoreMemento（Originator_originator）{
1700470910
1700470911
this.setState（_originator.getState（））；
1700470912
1700470913
}
1700470914
1700470915
//克隆当前对象
1700470916
1700470917
@Override
1700470918
1700470919
protected Originator clone（）{
1700470920
1700470921
try{
1700470922
1700470923
return（Originator）super.clone（）；
1700470924
1700470925
}catch（CloneNotSupportedException e）{
1700470926
1700470927
e.printStackTrace（）；
1700470928
1700470929
}
1700470930
1700470931
return null；
1700470932
1700470933
}
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