The traditional method of instantiating a separate JVM for each Java application running on a user's computer is inefficient as it involves a significant extra start-up time and is wasteful of memory. Unfortunately, due to the need to segregate the effects of one application from another there hasn't been any choice. Typically porting an existing application to the Applino environment is trivial. It is simply a matter of ensuring that it is properly started when instructed and properly terminated.