?? originator.java
字號:
package com.javapatterns.memento.historyonself;
public class Originator
{
public String state;
public Originator()
{
}
public void changeState(String state)
{
this.state = state;
System.out.println("State has been changed to: " + state);
}
public Memento createMemento()
{
return new Memento(this);
}
public void restoreMemento(MementoIF memento)
{
Memento m = (Memento) memento;
;
}
class Memento implements MementoIF
{
private String state;
private String getState()
{
return state;
}
private Memento(Originator o)
{
this.state = o.state;
}
}
}
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