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Precompiling the jar files?

 
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could anybody can explain what is the process of precompiling ? what's the usage?
 
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What is the context in which you heard that term? I've heard of "precompiling" before, but it's not a common concept in Java.

I remember this from Microsoft Visual C++. Compiling C++ code can take a long time. To make the compilation process quicker, Visual C++ would precompile C++ header files for you - so it would compile parts of the program in advance, so that everytime you change something, it would not have to compile everything from scratch.

Maybe some IDEs for Java do a similar kind of thing, and that's where you heard of it?
 
rosan samuel
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Thank you Friend..
I agree ,Because i didn't mean the Which aspect of my question?
But explained the thing is very nice..
 
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I remembered doing pre compiling of jsp pages in one of my projects long back. I had done it using ant tasks. After that our GUI used to load faster.
 
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