class is to implement the Comparable interface. The present definition of Skijumper is define s The below. public class Skilumper implements Flier, Athletel public Skumper(String firstName, String last Name) myFirstName-firstName; myLastName-lastName; myNumerOflumps-0; myHoursTraining 0 public void flyCi System.out.printin(" Using skies to take "+ myFirstName+ myLastName+ "int the air. ; myNumberOflumps++ public void train(double hours)H System.out.printin(" I am on the slopes"+ hours+ "hours today. "; myHoursTraining+hours public double getHoursTrained( return myHoursTraining public int getJumpsO return myNumberOfjumps; private String myFirstName; private String myLastName; private double myHoursTraining; private int myNumberOflumps just the class header so that the Comparable interface is implemented by Skilumper ement the necessary methods so that the Comparable interface is implemented by the Skiuumpe mper objects are compared by the number of jumps completed. class is to implement the Comparable interface. The present definition of Skijumper is define s The below. public class Skilumper implements Flier, Athletel public Skumper(String firstName, String last Name) myFirstName-firstName; myLastName-lastName; myNumerOflumps-0; myHoursTraining 0 public void flyCi System.out.printin(" Using skies to take "+ myFirstName+ myLastName+ "int the air. ; myNumberOflumps++ public void train(double hours)H System.out.printin(" I am on the slopes"+ hours+ "hours today. "; myHoursTraining+hours public double getHoursTrained( return myHoursTraining public int getJumpsO return myNumberOfjumps; private String myFirstName; private String myLastName; private double myHoursTraining; private int myNumberOflumps just the class header so that the Comparable interface is implemented by Skilumper ement the necessary methods so that the Comparable interface is implemented by the Skiuumpe mper objects are compared by the number of jumps completed