How to use

getListeners

method

in

de.schlichtherle.truezip.swing.EnhancedPanel

/**
 * Returns an array of all the panel listeners
 * registered on this component.
 *
 * @return All of this panel's {@code PanelListener}s or an empty
 *         array if no panel listeners are currently registered.
 *
 * @see #addPanelListener
 * @see #removePanelListener
 */
public PanelListener[] getPanelListeners() {
  return getListeners(PanelListener.class);
}

EventListener[] listeners;
listeners = instance.getListeners(PanelListener.class);
assertEquals(0, listeners.length);
} catch (NullPointerException expected) {
listeners = instance.getListeners(PanelListener.class);
assertEquals(0, listeners.length);
listeners = instance.getListeners(PanelListener.class);
assertEquals(0, listeners.length);
listeners = instance.getListeners(PanelListener.class);
assertEquals(1, listeners.length);
assertSame(listener, listeners[0]);
listeners = instance.getListeners(PanelListener.class);
assertEquals(2, listeners.length);
assertSame(listener, listeners[0]);
listeners = instance.getListeners(PanelListener.class);
assertEquals(1, listeners.length);
assertSame(listener, listeners[0]);
listeners = instance.getListeners(PanelListener.class);
assertEquals(0, listeners.length);