Name: dsC58869 Date: 09/14/99


JDK1.3 javadoc for java.awt.Component.getListeners(Class) states:
    /**
     * Return an array of all the listeners that were added to the Component
     * with addXXXListener(), where XXX is the name of the <code>listenerType</code>
     * argument. For example, to get all of the MouseListeners for the
     * given Component <code>c</code>, one would write:
     * <pre>
     * MouseListener[] mls = (MouseListener[])(c.getListeners(MouseListener.class))
     * </pre>
     * If no such listener list exists, then an empty array is returned.
     *
     * @param listenerType Type of listeners requested
     * @returns an array of all listeners added to this Component using addXXXListener, or an empty array if no such listeners have been added to this Component.
     * @since 1.3
     */

Javadoc says nothing about ClassCastException thrown if class is not
subclass of the java.util.EventListener.

Here is a minimized test:
--- ComponentTest.java ---
import java.awt.*;
import java.util.*;
public class ComponentTest {
    public static void main (String[] args) {
        Canvas c = new Canvas();
        EventListener[] l = c.getListeners(Object.class);
    }
}
--- Output ---
java ComponentTest
Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object;
        at java.awt.AWTEventMulticaster.getListeners(AWTEventMulticaster.java:799)
        at java.awt.Component.getListeners(Component.java:3211)
        at ComponentTest.main(ComponentTest.java:6)

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