65535 limitation for methods / functions / constructor

Elmar Grandel

Can anybody answer me the question if there is any possiblity to
increase the 65535byte limitation for Java classes / methods /
functions / constructors etc.

I am currently researching in the field of Bayesian Networks. BN is a
special Knowledge representation which uses calculation via
conditional probabilities to come to a conclusion (out of some data).
The problem is that these Networks need a huge amonge of dependet
data. One of the BN Engines i am using wants to get the data input by
a class file. Some of these datas are also stored in an array of
doubles ( please dont ask me why, but the engine wants this data like
that) . My Problem now is that this array has 1024 Elments with up to
13 digits. This means the array on itself has the size of 84KB. I
cannot put this array anywhere not in the constructor or method etc.
because i cannot compile the java file (eclipse ) or i get an runtime
error which says :

Exception in thread "main" java.lang.Class FormatError: BNP_alarm (Code
od longer than 65535 bytes)...

I thought about splitting up the array but that is such a bad solution
i dont want to think about it.

Please can anybody help me with my concern and tell me if there is any
possibility to increase the limitation. Thanks Elmar

Jul 17 '05 #1

Subscribe Reply

7070

Brian S O'Neill

Java bytecode isn't designed very well for supporting array initialization.
There's a few of workarounds, and you'll see them used in the Java library
itself. Your suggestion of splitting the arrays is probably the best
workaround. Another option is to store the doubles in a separate file,
within the same package, and then load the file as a resource. Then you have
to go through and parse it.

"Elmar Grandel" <El***********@ huskymail.uconn .edu> wrote in message
news:fc******** *************** ***@posting.goo gle.com...

Can anybody answer me the question if there is any possiblity to
increase the 65535byte limitation for Java classes / methods /
functions / constructors etc.

I am currently researching in the field of Bayesian Networks. BN is a
special Knowledge representation which uses calculation via
conditional probabilities to come to a conclusion (out of some data).
The problem is that these Networks need a huge amonge of dependet
data. One of the BN Engines i am using wants to get the data input by
a class file. Some of these datas are also stored in an array of
doubles ( please dont ask me why, but the engine wants this data like
that) . My Problem now is that this array has 1024 Elments with up to
13 digits. This means the array on itself has the size of 84KB. I
cannot put this array anywhere not in the constructor or method etc.
because i cannot compile the java file (eclipse ) or i get an runtime
error which says :

Exception in thread "main" java.lang.Class FormatError: BNP_alarm (Code
od longer than 65535 bytes)...

I thought about splitting up the array but that is such a bad solution
i dont want to think about it.

Please can anybody help me with my concern and tell me if there is any
possibility to increase the limitation. Thanks Elmar

Jul 17 '05 #2

Amey Samant

El***********@h uskymail.uconn. edu (Elmar Grandel) wrote in message news:<fc******* *************** ****@posting.go ogle.com>...

Can anybody answer me the question if there is any possiblity to
increase the 65535byte limitation for Java classes / methods /
functions / constructors etc.

hi
i guess storing data in a file & then reading it should be a good idea
in your case ....

regards
amey

Jul 17 '05 #3

Phil...

Ok, so me and my calculator can't figure out how you get 84KB.
A double can hold signed values of over 18 digits. This is ok. BUT
A double is 8 bytes, times 1024 is 8,192 or less than 1/10 your value.
"Elmar Grandel" <El***********@ huskymail.uconn .edu> wrote in message
news:fc******** *************** ***@posting.goo gle.com...

Can anybody answer me the question if there is any possiblity to
increase the 65535byte limitation for Java classes / methods /
functions / constructors etc.

I am currently researching in the field of Bayesian Networks. BN is a
special Knowledge representation which uses calculation via
conditional probabilities to come to a conclusion (out of some data).
The problem is that these Networks need a huge amonge of dependet
data. One of the BN Engines i am using wants to get the data input by
a class file. Some of these datas are also stored in an array of
doubles ( please dont ask me why, but the engine wants this data like
that) . My Problem now is that this array has 1024 Elments with up to
13 digits. This means the array on itself has the size of 84KB. I
cannot put this array anywhere not in the constructor or method etc.
because i cannot compile the java file (eclipse ) or i get an runtime
error which says :

Exception in thread "main" java.lang.Class FormatError: BNP_alarm (Code
od longer than 65535 bytes)...

I thought about splitting up the array but that is such a bad solution
i dont want to think about it.

Please can anybody help me with my concern and tell me if there is any
possibility to increase the limitation. Thanks Elmar

Jul 17 '05 #4

Elmar Grandel

"Phil..." <ry***@ieee.org > wrote in message news:<9eFeb.811 2$%h1.6389@sccr nsc02>...

Ok, so me and my calculator can't figure out how you get 84KB.
A double can hold signed values of over 18 digits. This is ok. BUT
A double is 8 bytes, times 1024 is 8,192 or less than 1/10 your value.

Thanks a lot everybody for your help. I solved the problem with
reading the data and parsing all the data ( by JavaCC) in an array in
runtime.
Phil, you calculated right but i forgot to but another digit in the
1024. Actually it is an array with 10368 doubles, so that is round
about 83kB big array.
Bye Elmar

Jul 17 '05 #5

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