/** Simulate the system. */
public void simulate() {
logHeader();
dataLog("Starting Simulation...");
system.simulate();
logFooter();
writer.close(system);
}
/**
* Records the system created by the setup frame.
*
* @param sys
*/
public void setSystem(ParticleSystem sys) {
system = sys;
writer = new DataWriter(sys);
system.addListener(writer);
}