# Generate Java main that call Sys.main
	fun compile_main_function do
		var v = new_visitor("{mainmodule.jname}_Main.java")
		v.add("public class {mainmodule.jname}_Main \{")
		v.add("  public static void main(String[] args) \{")

		var main_type = mainmodule.sys_type
		if main_type != null then
			var mainmodule = v.compiler.mainmodule
			var glob_sys = v.init_instance(main_type)
			var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
			if main_init != null then
				v.send(main_init, [glob_sys])
			end
			var main_method = mainmodule.try_get_primitive_method("run", main_type.mclass) or else
				mainmodule.try_get_primitive_method("main", main_type.mclass)
			if main_method != null then
				v.send(main_method, [glob_sys])
			end
		end
		v.add("  \}")
		v.add("\}")
	end