DefaultTableColumnModel getListeners() current signature is following:
    public java.util.EventListener[] getListeners(java.lang.Class listenerType).
But actually this method is closely connected with EventListenerList.getListeners(). Up to JDK 1.4 this method had signature exactly as above. But starting from JDK 1.5 generics were added:
    public <T extends EventListener> T[] getListeners(Class<T> t).
Signature of DefaultTableColumnModel.getListeners() should be updated accordingly.

Also spec contains the following information about throwing exceptions:
"Throws:
   java.lang.ClassCastException - if listenerType doesn't specify a class or interface that implements java.util.EventListener".
Due to generics starting from JDK 1.5 it's not possible to pass such class or interface as a parameter. So this assertion should be deleted.

At the same time this method throws NullPointerException if we pass null as a parameter. This behavior should be documented in the spec.

###@###.### 2005-1-18 15:26:58 GMT

Last two concerns (about ClassCaseException and NullPointerException) are also valid for AbstractTableModel.getListeners() method.
###@###.### 2005-1-27 14:03:33 GMT