java - Why implement the inherited abstract method? -


i have confusion in "beginning android game" book, chapter 3, pg.100-101. think i've follow book instruction, ide still give me error:

the type myawesomegame must implement inherited abstract method game.getfileio()

how can fix it, or implement don't grasp yet?

and here codes:

public class myawesomegame extends androidgame {     public screen getstartscreen(){         return new mysuperawesomestartscreen(this);     } } 


public abstract class androidgame implements game {  } 


public interface game {     public input getinput();      public fileio getfileio();      public graphics getgraphics();      public audio getaudio();      public void setscreen(screen screen);      public screen getcurrentscreen();      public screen getstartscreen(); }

a concrete class must implement abstract methods of ancestor abstract classes.

in case abstract parent class - androidgame - implements interface - game, each concrete sub-class of abstract class (such myawesomegame class) must implement methods of interface.


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