001    package aima.logic.fol.domain;
002    
003    import java.util.EventObject;
004    
005    /**
006     * @author Ciaran O'Reilly
007     * 
008     */
009    public abstract class FOLDomainEvent extends EventObject {
010    
011            private static final long serialVersionUID = 1L;
012    
013            public FOLDomainEvent(Object source) {
014                    super(source);
015            }
016            
017            public abstract void notifyListener(FOLDomainListener listener);
018    }