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µ±Ç°Î»Öà > ÍøÕ¾½¨ÉèѧԺ > ÍøÂç±à³Ì > Java½Ì³Ì
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public interface State {
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}

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public class NormalState implements State {
    public void fire() {
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}
public class ExcitedState implements State {
    public void fire() {
       System.out.println("ÐË·Ü״̬ÿÃ뿪ǹ2´Î¡£");
    }
}
 
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