// polymorphism/music/Wind.java // (c)2021 MindView LLC: see Copyright.txt // We make no guarantees that this code is fit for any purpose. // Visit http://OnJava8.com for more book information. package polymorphism.music; // Wind objects are instruments // because they have the same interface: public class Wind extends Instrument { // Redefine interface method: @Override public void play(Note n) { System.out.println("Wind.play() " + n); } }