Re: Avoid creating a stacktrace prior to JDK 1.7

Jan Burse <>
Sat, 01 Oct 2011 13:22:46 +0200
Stanimir Stamenkov schrieb:

Fri, 30 Sep 2011 15:57:57 +0200, /Jan Burse/:

I have the following code deep down in a
recursion which eats up a lot of stack.
The recursion is not shown but only
the code:

Class<?> class;
try {
class = Class.forName(str);
} catch (ClassNotFoundException x) {
class = null;

Will it every time I call it for a
non-existing class build the whole stack
trace for the exception x and then
immediately forget about it?

I guess so.

Can I instruct an exception
to not fill the stack trace? And way

You may perform a check which avoids the exceptional situation like:

Class<?> class;
try {
class = (Class.getResource(str + ".class") != null)
? Class.forName(str)
: null;
} catch (ClassNotFoundException x) {
class = null;

The Class.forName(String) could still fail if the access to the resource
content is restricted, I imagine.

Yes, this would change the role of exceptions,
not use it for business logic, only for
exceptional flow.

gr8, thx


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