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condional compilation

Posted on 1998-02-20
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Last Modified: 2010-04-16
Is there a way to do conditional compilation in Java?  Like in C I when I compile I can define something like DEBUG so that various debug statements will be executed, ie using #IFDEF and #ENDIF statements.  How do I do this in Java
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Question by:micah
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imladris earned 200 total points
ID: 1233174
There is no explicit conditional compilation included in Java. This was a feature intended to be used for platform dependencies. Java presupposes the platform to be irrelevant. (It hasn't quite succeeded yet, but that's another story).

You can achieve a similar result though, by using "constants", i.e. variables that are declared final. If you, for instance, had a variable defined:

public static final boolean debug=false;

and had code:

if(debug)
{ System.out.println("DEBUG STUFF");
}

then the debug statement will not be executed, and most Java compilers will not include the code in the class file at all.

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