package bird;

public class Bird{
    protected name;
}

package swan;
import bird.Bird;

public class Swan{
   public void check1(){
      System.out.print(name);
   }

   public void check2(){
      Swan swan = new Swan();
      System.out.print(swan.name);
   }

   public void check3(){
      Bird bird = new Bird();
      System.out.print(name);
   }
}