Java equivalent for the C++ command..

Java doesn''t have global variables. And even if it did, since unlike C++ it doesn''t have to deal with braindead compilers and linkers, extern wouldn''t be needed.

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"Sneftel is correct, if rather vulgar." --Flarelocke

Nope. Not as I know of. And globals are a big no-no!

"Imagination is more important than knowledge..." Albert Einstein

A "global" in Java would be a static public variable:

public class Globals
{
   public static int global = 42;
}
 

This can now be accessed from anywhere as Globals.global = 84;




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Thanks that was Arild. I hope that works across files too as in values affected in one file will be represented in another. It''s complicated, but I''m trying to convert a 3000 line C++ OpenGL program to Java, and well, it''s a real learning process.

It certainly does work accross files, as long as you make the variable public static. Java compilers only compile individual classes to an intermediate format, which the virtual machine / JIT then loads, resolving references between them while doing this. I''d suggest getting a good book on Java and/or making some simple practice programs to get an idea of the things it can and can''t do.