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<TITLE>Firing Item Events (Java Developers Almanac Example)
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    <B><A HREF="../java.awt.event/pkg.html">java.awt.event</A></B><font color="#666666" class="xsmall-font">
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  <h3>e650. Firing Item Events</h3>

An object wishing to fire item events must implement <code>ItemSelectable</code>.
This example shows typical code that an object must implement to
fire item events. When an item event is to be fired, <code>fireItemEvent()</code>
should be called.


<pre>    public class <font color="#0066ff"><i>MyComponent</i></font> implements ItemSelectable {
        protected EventListenerList listenerList = new EventListenerList();
    
        public Object[] getSelectedObjects() {
            return <font color="#0066ff"><i>selectedObjects</i></font>;
        }
    
        public void addItemListener(ItemListener l) {
            listenerList.add(ItemListener.class, l);
        }
    
        public void removeItemListener(ItemListener l) {
            listenerList.remove(ItemListener.class, l);
        }
    
        // If the item is selected, sel should be true.
        void fireItemEvent(Object item, boolean sel) {
            ItemEvent evt = new ItemEvent(this, ItemEvent.ITEM_STATE_CHANGED,
                item, sel ? ItemEvent.SELECTED : ItemEvent.DESELECTED);
    
            // Get list of listeners
            Object[] listeners = listenerList.getListenerList();
    
            // Send event to all listeners
            for (int i=0; i&lt;listeners.length-2; i+=2) {
                if (listeners[i] == ItemListener.class) {
                    ((ItemListener)listeners[i+1]).itemStateChanged(evt);
                }
            }
        }
    }
</pre>
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            &nbsp;<b>Related Examples</b></font></td>
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e643. <a class="eglink" href="InnerHandler.html?l=rel">
    Handling Events with an Anonymous Class
</a>
<br>

e644. <a class="eglink" href="ActionEvents.html?l=rel">
    Handling Action Events
</a>
<br>

e645. <a class="eglink" href="KeyEvents.html?l=rel">
    Handling Key Presses
</a>
<br>

e646. <a class="eglink" href="MouseEvents.html?l=rel">
    Handling Mouse Clicks
</a>
<br>

e647. <a class="eglink" href="MouseMotion.html?l=rel">
    Handling Mouse Motion
</a>
<br>

e648. <a class="eglink" href="MultiClicks.html?l=rel">
    Detecting Double and Triple Clicks
</a>
<br>

e649. <a class="eglink" href="FocusEvents.html?l=rel">
    Handling Focus Changes
</a>
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