Push 23 August 1bb5b46bb326 MethodHandle equals bug

[Howard Lovatt]

Hi,

I think I might have found another bug:

    final ActionListener al4 = Main#print( ActionEvent );
    b1.addActionListener( al4 );
    b1.doClick();
    b1.removeActionListener( al4 );

Where print is:

  private static void print( final ActionEvent notUsed ) {
    out.println( "Main.print method called" );
  }

and b1 is a JButton. It gives:

Main.print method called
Exception in thread "main" java.lang.ClassCastException: required
class java.awt.event.ActionEvent but encountered class $Proxy0
	at sun.dyn.MethodHandleImpl.raiseException(MethodHandleImpl.java:1246)
	at sun.dyn.FromGeneric$A2.invoke_I2(FromGeneric.java:531)
	at java.dyn.MethodHandle.invokeVarargs(MethodHandle.java:328)
	at com.sun.runtime.ProxyHelper$1.invoke(ProxyHelper.java:57)
	at $Proxy0.equals(Unknown Source)
	at javax.swing.event.EventListenerList.remove(EventListenerList.java:224)
	at javax.swing.AbstractButton.removeActionListener(AbstractButton.java:1935)
	at lambdas.Main.lambdas(Main.java:84)
	at lambdas.Main.main(Main.java:20)

Therefore the method reference is added OK, but can't be removed.
Seems to be something to do with the equals method implemented by the
MethodHandle.

Sorry to keep finding bugs,

  -- Howard.