/**
 * Section 4.2.2, Page 59
 *
 * One-shot’ behaviours are designed to complete in one execution phase; 
 * their action() method is thus executed only once.
**/
import jade.core.behaviours.OneShotBehaviour;
public class MyOneShotBehaviour extends OneShotBehaviour {
  public void action() {
    // perform operation X
  }
}