//: WindError.java // Accidentally changing the interface
class NoteX { public static final int MIDDLE_C = 0, C_SHARP = 1, C_FLAT = 2; }
class InstrumentX { public void play(int NoteX) { System.out. } }
class WindX extends InstrumentX { // OOPS! Changes the method interface: public void play(NoteX n) { System.out.println("WindX.play(NoteX n)"); } }
public class WindError { public static void tune(InstrumentX i) { // ... i.play(NoteX.MIDDLE_C); } public static void main(String[] args) { WindX flute = new WindX(); tune(flute); // Not the desired behavior! } } ///:~
