Groups > comp.lang.java.programmer > #8437

Re: Avoid creating a stacktrace prior to JDK 1.7

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From	Jan Burse <janburse@fastmail.fm>
Newsgroups	comp.lang.java.programmer
Subject	Re: Avoid creating a stacktrace prior to JDK 1.7
Date	Sat, 01 Oct 2011 13:22:46 +0200
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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
>> arround?
>
> 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

Bye

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Thread

Avoid creating a stacktrace prior to JDK 1.7 Jan Burse <janburse@fastmail.fm> - 2011-09-30 15:57 +0200
  Re: Avoid creating a stacktrace prior to JDK 1.7 Stanimir Stamenkov <s7an10@netscape.net> - 2011-10-01 13:27 +0300
    Re: Avoid creating a stacktrace prior to JDK 1.7 Jan Burse <janburse@fastmail.fm> - 2011-10-01 13:22 +0200
      Re: Avoid creating a stacktrace prior to JDK 1.7 Lew <lewbloch@gmail.com> - 2011-10-01 09:10 -0700
        Re: Avoid creating a stacktrace prior to JDK 1.7 Stanimir Stamenkov <s7an10@netscape.net> - 2011-10-01 20:31 +0300
        Re: Avoid creating a stacktrace prior to JDK 1.7 Jan Burse <janburse@fastmail.fm> - 2011-10-01 20:02 +0200
          Re: Avoid creating a stacktrace prior to JDK 1.7 Lew <lewbloch@gmail.com> - 2011-10-01 12:21 -0700
            Re: Avoid creating a stacktrace prior to JDK 1.7 Jan Burse <janburse@fastmail.fm> - 2011-10-01 22:04 +0200
              Re: Avoid creating a stacktrace prior to JDK 1.7 Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-10-01 16:24 -0400
                Re: Avoid creating a stacktrace prior to JDK 1.7 Jan Burse <janburse@fastmail.fm> - 2011-10-01 23:14 +0200
                Re: Avoid creating a stacktrace prior to JDK 1.7 Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-10-01 17:28 -0400
                Re: Avoid creating a stacktrace prior to JDK 1.7 Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-10-01 23:45 +0000
                Re: Avoid creating a stacktrace prior to JDK 1.7 Stanimir Stamenkov <s7an10@netscape.net> - 2011-10-02 00:58 +0300
                Re: Avoid creating a stacktrace prior to JDK 1.7 Jan Burse <janburse@fastmail.fm> - 2011-10-02 02:04 +0200
                Re: Avoid creating a stacktrace prior to JDK 1.7 Lew <lewbloch@gmail.com> - 2011-10-01 20:06 -0700
                Re: Avoid creating a stacktrace prior to JDK 1.7 Stanimir Stamenkov <s7an10@netscape.net> - 2011-10-02 13:14 +0300
                Re: Avoid creating a stacktrace prior to JDK 1.7 Lew <lewbloch@gmail.com> - 2011-10-02 08:37 -0700
                Re: Avoid creating a stacktrace prior to JDK 1.7 Jan Burse <janburse@fastmail.fm> - 2011-10-02 20:26 +0200
                Re: Avoid creating a stacktrace prior to JDK 1.7 Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-10-02 17:51 -0400
                Re: Avoid creating a stacktrace prior to JDK 1.7 Jan Burse <janburse@fastmail.fm> - 2011-10-03 01:32 +0200
    Re: Avoid creating a stacktrace prior to JDK 1.7 Stanimir Stamenkov <s7an10@netscape.net> - 2011-10-01 20:19 +0300
      Re: Avoid creating a stacktrace prior to JDK 1.7 Jan Burse <janburse@fastmail.fm> - 2011-10-01 20:04 +0200
        Re: Avoid creating a stacktrace prior to JDK 1.7 Stanimir Stamenkov <s7an10@netscape.net> - 2011-10-01 21:15 +0300

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