// Bat.java [static]
import java.util.*;
public class Bat 
 extends Mammal 
 implements Flier
{
  // di implementation for Flier ------------------------
  public void Takeoff() { trace("Bat.Takeoff():"); }
  public void Ascend() { trace("Bat.Ascend()");  }
  public boolean ThereYet(int x, int y) {
    trace( "Bat.ThereYet()" );
    return true;
  }
  public void FlapTowards(int x, int y) { trace( "Bat.FlapTowards()" ); }
  public void Descend() { trace( "Bat.Descend():" ); }
  public void Land() { trace( "Bat.Land()" ); }
  // ============== for Flier
  Flier$Ego $flier = new Flier$Ego();
  public void Fly(int x, int y, int altitude) {
    $flier.Fly(this, x, y, altitude);
  }
}