java - 32-bit or 64-bit application on 64-bit OS? -

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we developing swing application written java requires 128mb memory, , in short future don't see require more memory 4gb. provide 3 different releases, 1 32-bit windows, 1 32-bit linux , 64-bit linux, installer has jre included. 64-bit version not used until couple of weeks ago, , outofmemoryexception reported because application consumes 40-50% more memory 32-bit version.

my question is, needed @ provide 64-bit version 64-bit linux if application never need use more 4gb memory? had quick test revealed 32-bit version works on 64-bit linux. i'm not sure cons have, e.g. performance and/or compatibility issue?

check 64 bit java


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