RE: Thanks for the example, here is another question.

["Danilo Tuler" <tuler@...>]

> What I can't figure out is how to call a Lua function and get 
> a return value from it?

In a way (very) similar you would do with the C API.
All the C API should be methods of the LuaState class.

Example:

////////////////////////////////////////////////
// LuaJavaTest.java
public class LuaJavaTest {
	public static void main(String[] args) throws
ClassNotFoundException, LuaException {	
		LuaState l = LuaStateFactory.newLuaState();
		
		// execute lua script
		l.doFile("main.lua");
		
		// put global lua function in the stack
		l.getGlobal("test");

		// pass parameters
		l.pushString("foo");

		// call the function
		l.call(1, 1);

		// print the result
		System.out.println(l.toString(-1));
		l.pop(1);
	}
}

-------------------------------------------------
-- main.lua
function test (str)
	return str .. str
end


-- Danilo