Difference between C++ and Java compilation process -

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possible duplicate:
why c++ compilation take long?

hi,

i searched in google differences between c++ , java compilation process, c++ , java language features , differences returned.

i proficient in java, not in c++. fixed few bugs in c++. experience, noticed c++ took more time build compared java minor changes.

regards bala

there few high-level differences come mind. of generalizations , should prefixed "often ..." or "some compilers ...", sake of readability i'll leave out.

  • c/c++ compilation doesn't read information binary files, reads method/type definitions header files need parsed in full (exception: precompiled headers)
  • c/c++ compilation includes pre-processor step can wide array of text-replacement (which makes header pre-compilation harder do)
  • the c++ syntax lot more complex java syntax
  • the c++ type system lot more complex java type system
  • c++ compilation produces native assembler code, lot more complex produce relatively simple byte code
  • c++ compilers need optimizations because there isn't other thing them. java compiler pretty simple 1:1 translation of java source code java byte code, no optimizations done @ step (that's left jvm do).
  • c++ has template language that's turing complete! (so strictly speaking c++ code needs run produce executable code , c++ compiler need solve halting problem tell if arbitrary c++ code compilable).

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