Comments on: GWT Dynamic Exception Handling

By: atanas

atanas — Wed, 10 Feb 2010 16:12:47 +0000

Good catch. Thanks.

By: Martin De Wulf

Martin De Wulf — Wed, 10 Feb 2010 09:26:20 +0000

Oops, the right code is :
if (cause.getClass().equals(MyException.class)) {
MyException myException = (MyException) cause;
writeError(myException);
return;

By: Martin De Wulf

Martin De Wulf — Wed, 10 Feb 2010 09:25:22 +0000

I did not see this post at first, only the previous one.

Your solution is nice, even if I do not mind having my exception declared in my servlet. That said, I would suggest to replace :

if (cause.getClass().equals(MyException.class)) {
writeError(new MyException());
return;

by :

if (cause.getClass().equals(MyException.class)) {
MyException myException = (MyException) cause;
writeError(cause);
return;

That way, you will not loose the message or custom fields of your MyException.