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Java Forum / General / October 2006I want to know Size of operator in java like cpp
how do we know how much mewmory allocated to class http://martin.nobilitas.com/java/sizeof.html http://www.glenmccl.com/tip_038.htm Hope this helps. -cheers, Manish Srinu schreef: > how do we know how much mewmory allocated to class Google is you friend. H. - -- Hendrik Maryns http://tcl.sfs.uni-tuebingen.de/~hendrik/ ================== http://aouw.org Ask smart questions, get good answers: http://www.catb.org/~esr/faqs/smart-questions.html > how do we know how much mewmory allocated to class Java doesn't need a sizeof operator, because it doesn't have C's platform-dependence in the size of various types. Don't try to roll your own profiler. There are plenty of good ones available, even for free; I'm using JRat (jrat.sourceforge.net) myself.  SignatureMark Jeffcoat Austin, TX and you just can't rely on the results you get using any 'indirect approach' (as the freeMemory one, posted above)... the underlying implementation can change even among different JRE/SDK versions... but there are some 'rules of the thumb' for using memory wisely: . byte, short and int are at most as big as an 'int', and a int occupies at least 4 bytes . a char occupies at least two bytes . an object is as big as the sum of its componets . an array is an object too and etc. but there's no way to precisely define the space used by your data structures, you can not get to know the size of the data structures maintained by the garbage collector and by the virtual machine... maas - http://www.marcosaurelio.com > > how do we know how much mewmory allocated to class > [quoted text clipped - 5 lines] > of good ones available, even for free; I'm using JRat > (jrat.sourceforge.net) myself. Srinu ha scritto: > how do we know how much mewmory allocated to class try this: http://sourceforge.net/projects/sizeof/ it's based on the "new" java.lang.Instrumentation package bye Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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