// Pelican.java [static]
import java.util.*;
public class Pelican 
 extends Oviparous
 implements Flier, Walker
{
  // for Flier
  public void Takeoff() { trace("Pelican.Takeoff():"); }
  public void Ascend() { trace("Pelican.Ascend()");  }
  public boolean ThereYet(int x, int y) {
    trace( "Pelican.ThereYet()" );
    return false;
  }
  public void FlapTowards(int x, int y) { trace( "Pelican.FlapTowards()" ); }
  public void Descend() { trace( "Pelican.Descend():" ); }
  public void Land() { trace( "Pelican.Land()" ); }

  // for Walker
  public void Prepare() { trace( "Pelican.Prepare()" ); }
  public int  NumberOfFeet() { trace( "Pelican.NumberOfFeet()" ); return 2; }
  public void MoveFoot(int feetno) { trace( "Pelican.MoveFoot()" ); }
  public void Stabilize() { trace( "Pelican.Stabilize()" ); }
  public void AtEase() { trace( "Pelican.AtEase()" ); }
  // ============== for Flier
  Flier$Ego $flier = new Flier$Ego( );
  public void Fly(int x, int y, int altitude) {
    $flier.Fly(this, x, y, altitude);
  }
  // ============== For Walker
  Walker$Ego $walker = new Walker$Ego( );
  public void Walk(int distance) {
    $walker.Walk(this, distance);
  }
}