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public interface InterestingEvent {
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// Ëü¿ÉÒÔÓзµ»ØÖµ£¬Ò²¿É½ÓÊÕ²ÎÊý
public void interestingEvent();
}
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public class EventNotifer {
private InterestingEvent ie;
private boolean somethingHappened
public EventNotifer(InterestingEvent event) {
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