charactereventhandler.java

java threads 3th源码,包括各个章节的源代码

package javathreads.examples.ch08.example5;

import java.util.*;

public class CharacterEventHandler {
    private Vector listeners = new Vector();

    public void addCharacterListener(CharacterListener cl) {
        listeners.add(cl);
    }

    public void removeCharacterListener(CharacterListener cl) {
        listeners.remove(cl);
    }

    public void fireNewCharacter(CharacterSource source, int c) {
        CharacterEvent ce = new CharacterEvent(source, c);
	Enumeration e;
        synchronized(listeners) {
	    e = listeners.elements();
	    while (e.hasMoreElements()) {
                ((CharacterListener) e.nextElement()).newCharacter(ce);
	    }
	}
    }
}