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cem_ |
hello |
| 01:32 |
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pdurbin |
cem_: hey |
| 01:33 |
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cem_ |
pdurbin: Is this right place to start learning java /Q&A? |
| 01:39 |
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pdurbin |
cem_: well, we try to focus on Java EE specifically, but go ahead |
| 01:51 |
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cem_ |
okay , i dont know how long it will take me to come to Java EE . I'll try to get there soon . Which database is suited for java (supported)? |
| 01:53 |
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tjsnell |
most all of them |
| 02:36 |
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pdurbin |
except sqlite |
| 02:52 |
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Quest |
pdurbin sqlite is not supported by java? |
| 04:36 |
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Quest |
strange |
| 05:43 |
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dangertools was kicked by Quest: its 24000 . not 20000 |
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sfisque |
since when? |
| 06:21 |
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Quest |
sfisque pdurbin said that. not me |
| 07:02 |
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Quest |
If I am using rest like url patterns like site.com/var1/param2/something/somethingElse . wont it create problems if the user (requester) skips 1 out of stated 4 params. e.g aparm2 ? (this wont be an issue if the traditional way is used like site.com?var1=var1¶m2=param2... so on)/ even if one param is skipped. the others are not effected. |
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| 10:01 |
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pdurbin |
Quest: have you tried http://ocpsoft.org/prettyfaces/ or http://ocpsoft.org/rewrite/ ? |
| 10:10 |
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pdurbin |
sfisque: I tried using sqlite from Java but it doesn't seem well supported: http://irclog.greptilian.com/sourcefu/2013-06-03#i_8742 |
| 10:22 |
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Quest |
pdurbin i have no problem in writing urls. iam using spring and rest like pattern |
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| 21:29 |
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phalaris |
hi |
| 21:29 |
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| 21:29 |
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phalaris |
i'm not sure if i'm right here with my question, but i'll just try it =) |
| 21:30 |
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whartung |
bring it |
| 21:30 |
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phalaris |
is there a possibility to test if an ArrayList has a defined value at the entry i? |
| 21:30 |
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Faux |
i < size() |
| 21:30 |
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phalaris |
i know that i can test whether the list is empty or not, but i couldn't find that |
| 21:30 |
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whartung |
what do you mean "defined value" |
| 21:30 |
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whartung |
but, yea, what Faux said |
| 21:30 |
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phalaris |
i just want to test, if there is a value or not |
| 21:31 |
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phalaris |
because as far as i know it's possible to add an entry without giving it a value? |
| 21:31 |
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whartung |
boolean exists = (i < list.size() && list.get(i) != null) |
| 21:31 |
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phalaris |
just with test.add(3); |
| 21:32 |
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phalaris |
what does null mean here? |
| 21:32 |
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phalaris |
no value? |
| 21:33 |
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whartung |
If you do ArrayList list = new ArrayList(5), you will end up with a list with 5 elements, all of which are null |
| 21:33 |
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phalaris |
okey, that's perfect |
| 21:34 |
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whartung |
if you want the existence of the cell at all, then compare against the size. If you want to know if there's something actually IN the cell, check against null as well |
| 21:34 |
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phalaris |
hmm, wait, could i show you the code? |
| 21:34 |
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whartung |
you can paste it somewhere |
| 21:35 |
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phalaris |
sure |
| 21:36 |
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phalaris |
http://www.pasteall.org/46323/java |
| 21:36 |
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phalaris |
so what the method will get in the constructor is an array with "ones" and "zeros" in it |
| 21:37 |
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phalaris |
the aim of the method is to print out all the lenghtes of the sequences of "ones" in the array |
| 21:37 |
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phalaris |
the solution i have right now works fine, but there's a little detail |
| 21:38 |
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whartung |
so 1 1 1 0 1 1 1 1 0 prints 3 and 4? |
| 21:38 |
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phalaris |
if the array ends with a 0, i'll get a 0 in the last element of long_sequence |
| 21:38 |
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phalaris |
exactly |
| 21:39 |
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phalaris |
this is due to the "else if (long_sequence.get(s) !=0) |
| 21:39 |
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phalaris |
so i'd like to rewrite this else if condition |
| 21:41 |
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whartung |
untested |
| 21:41 |
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whartung |
http://www.pasteall.org/46328/java |
| 21:43 |
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phalaris |
you don't change last  anywhere? |
| 21:43 |
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whartung |
I set it at the bottom of the loop |
| 21:43 |
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phalaris |
oups, sry didn't see that |
| 21:44 |
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phalaris |
hmm, but how do you get all the values? |
| 21:44 |
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whartung |
I count them |
| 21:44 |
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phalaris |
the lengthes of the sequence |
| 21:44 |
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phalaris |
sequences* |
| 21:45 |
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whartung |
run it through by hand with a test array, you'll see how it works |
| 21:45 |
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whartung |
try it with 0 1 1 0 1 |
| 21:45 |
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whartung |
see what happens |
| 21:45 |
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phalaris |
aah the problem is, that i need the values to be safed in an arraylist |
| 21:46 |
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phalaris |
i don't just want to print them out |
| 21:46 |
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whartung |
then change the prints to list.add(cut) |
| 21:48 |
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phalaris |
hmm and why do you compare last with 1? |
| 21:48 |
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phalaris |
shouldn't it be last > 1? |
| 21:49 |
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whartung |
to see if the last number we saw was a 1, and not a 0 |
| 21:49 |
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phalaris |
i mean, you're changing last upwards? |
| 21:49 |
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whartung |
run it by hand |
| 21:49 |
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phalaris |
last always hast the number of i? |
| 21:49 |
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whartung |
where is last ever assigned the value of i? |
| 21:50 |
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phalaris |
ah sry, i'm so stupid... |
| 21:50 |
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phalaris |
and if i'd like to use my method?^^ |
| 21:51 |
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phalaris |
would there be a way to check if the element s of long_sequence does not have a value? |
| 21:51 |
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whartung |
well, here's a working method - it's an exercise for the reader to convert it your method :) |
| 21:51 |
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whartung |
I don't see how that's even germane to the problem |
| 21:52 |
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| 21:52 |
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phalaris |
in the else if i could use long_sequence.add(s) |
| 21:53 |
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phalaris |
and then check in the else if, if long_sequence(s) does have a value or not |
| 21:53 |
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whartung |
why would you do that? |
| 21:54 |
|
phalaris |
ehm, because it would work^^ |
| 21:57 |
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phalaris |
whartung: i still get the 0 |
| 21:57 |
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phalaris |
that's strange.. |
| 21:59 |
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phalaris |
anyway, i have to go to bed, thx for the help |
| 21:59 |
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phalaris |
i'll look over it tomorrow |
| 21:59 |
|
phalaris |
good night |
| 23:33 |
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