< prev index next >

src/java.base/share/classes/java/util/Observer.java

Print this page

        

*** 23,47 **** * questions. */ package java.util; /** ! * A class can implement the <code>Observer</code> interface when it * wants to be informed of changes in observable objects. * * @author Chris Warth * @see java.util.Observable * @since 1.0 */ public interface Observer { /** * This method is called whenever the observed object is changed. An ! * application calls an <tt>Observable</tt> object's ! * <code>notifyObservers</code> method to have all the object's * observers notified of the change. * * @param o the observable object. ! * @param arg an argument passed to the <code>notifyObservers</code> * method. */ void update(Observable o, Object arg); } --- 23,47 ---- * questions. */ package java.util; /** ! * A class can implement the {@code Observer} interface when it * wants to be informed of changes in observable objects. * * @author Chris Warth * @see java.util.Observable * @since 1.0 */ public interface Observer { /** * This method is called whenever the observed object is changed. An ! * application calls an {@code Observable} object's ! * {@code notifyObservers} method to have all the object's * observers notified of the change. * * @param o the observable object. ! * @param arg an argument passed to the {@code notifyObservers} * method. */ void update(Observable o, Object arg); }
< prev index next >