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V4hn
Joined: 27 Nov 2007
Posts: 14
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 UpCount - recursive calamity |
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Ev'ning,
no problems solving it, but since my JavaVM stopped because of a stack overflow, when I tried to run the code, I had to port it to C...
I'm wondering, whether there is any option to increase the default stack-size in java?
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| Sun Oct 05, 2008 10:16 pm |
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lechat
Joined: 27 Feb 2008
Posts: 12
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what about 'java -X'? Then you can use 'java -Xss1024M' for 1Gb stack size...
But do you really need it?
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| Mon Oct 06, 2008 6:25 pm |
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V4hn
Joined: 27 Nov 2007
Posts: 14
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what about 'java -X'? Then you can use 'java -Xss1024M' for 1Gb stack size... |
Ah, thanks!
I don't work with Java normally, since I don't like bytecode,
so I didn't know any parameters..
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But do you really need it? |
Well, not any more, since I've done that challenge,
but we're hacking to learn, aren't we?
And next time I need to run some heavy recursive java code,
I'll know how to increase the stacksize 
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| Mon Oct 06, 2008 7:07 pm |
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Donster
Joined: 28 Oct 2008
Posts: 2
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I get the same problems with the Stackoverflow.
Then I turned the recursive function into an iterative one.
It works fine. 
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| Tue Nov 04, 2008 10:25 am |
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knox
Joined: 01 Oct 2008
Posts: 8
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I think donster's post is giving to much hint on solving the challenge. Maybe the post should be censored.
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| Tue Nov 04, 2008 11:54 am |
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adum
Joined: 19 Apr 2007
Posts: 392
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this discussion is a little to give-away, but since the problem is really quite simple i'm not going to worry about it.
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| Tue Nov 04, 2008 6:58 pm |
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superhacker
Joined: 06 Mar 2009
Posts: 7
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I changed the code to vb and used another method to count up
However the result i get seems to be wrong...
My result is a 5 digit number, does that sound alright?
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| Fri Apr 03, 2009 11:46 am |
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psycore
Joined: 18 Feb 2009
Posts: 8
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But do you really need it? |
Uhm, since I don't even know the words recursive or iterative (should I? I'm 16), yes.
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| Wed Jul 01, 2009 6:01 pm |
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SandyThiemer
Joined: 06 Mar 2009
Posts: 5
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Hello,
i have a problem with the upcount challenge. I installed jdk 1.6.0_17 and compiled the class file without any problems but when i run the classfile i got an exception:
Exception in thread "main" java.lang.NoClassDefFoundError: upcount/class
Could not find the main class: upcount.class. Program will exit.
I really dont understand that because i changed nothing in the upcount.java file.
I hope the text above is not a spoiler...
thx in advance(?)
Sandy
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| Wed Dec 23, 2009 9:42 pm |
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DaymItzJack
Joined: 29 Oct 2009
Posts: 106
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What are you using to run it?
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| Wed Dec 23, 2009 10:19 pm |
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SandyThiemer
Joined: 06 Mar 2009
Posts: 5
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the simple commandline tool in the jdk named java
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| Wed Dec 23, 2009 11:52 pm |
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DaymItzJack
Joined: 29 Oct 2009
Posts: 106
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the simple commandline tool in the jdk named java |
How so? You might be doing something wrong.
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| Thu Dec 24, 2009 3:54 am |
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SandyThiemer
Joined: 06 Mar 2009
Posts: 5
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the classfile from the upcount.jave is in the same directory like java and so i just type in
java upcount.class
then the error appears
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| Thu Dec 24, 2009 10:50 am |
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megatron40
Joined: 10 Aug 2009
Posts: 36
Location: Texas |
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When running a Java application from the command line you don't want to append the .class extension. Just the class name. So in your case it would be something like
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java upcount
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"The man who doesn't read... has no advantage over the man who can't read..." - Mark Twain
Last edited by megatron40 on Thu Dec 24, 2009 7:18 pm; edited 1 time in total |
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| Thu Dec 24, 2009 2:04 pm |
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SandyThiemer
Joined: 06 Mar 2009
Posts: 5
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oh youre right! Thx! What a dumb failure
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| Thu Dec 24, 2009 6:43 pm |
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