Re: Question about debugging .class file

Thanks Tom,


Thomas Hawtin wrote:
>> When debugging a C or C++ binary file, the file is different from the release
>> version of binary file (debug version binary file is larger). My question is,
>[quoted text clipped - 3 lines]
>> order to make debug version binary file be different from release version
>> binary file?
>
>http://java.sun.com/j2se/1.5.0/docs/tooldocs/solaris/javac.html#options
>
>You can strip the debug information with -g:none. -O used to do the same
>thing, but that appears to be gone.
>
>It shouldn't make much difference to the performance if you leave
>debugging information in. Line numbers in particular can be handy to
>diagnose errors on production systems.
>
>If you want to hide your code from decompilation, best use and
>obfuscator. There's lots of information left in the light compilation
>from source to byte code. Type names, field names, method names and most
>of the structure.
>
>http://mindprod.com/jgloss/obfuscator.html
>http://mindprod.com/jgloss/decompiler.html
>
>The real question: is size important to you. For both ye olde C++ on a
>floppy and Java applet I have come into a company and shrunk the binary
>considerably by switching off the default debug info. But if you're
>shipping to your own servers, on DVD or over broadband, size matters not.
>
>Tom Hawtin

Suppose we want to debug a .class file, we will compile it into debug status
(so that we can use F6, F7 and F8 in Java IDE to debug .class file). Do you
mean the .class file (which we use to debug as mentioned above) is different
from (larger than) the file which we are going to release?

What do you mean "light compilation from source to byte code"?


regards,
George


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