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Message:

Overloading with Inheritance

Posted by Anish on November 28, 2001 at 1:34 PM

Is it not possible to combine overloading with inheritance?
Take the following code from BruceEckel's Thinking in Java Edition 1, p263. He seems to suggest that overloading with inheritance is possible. I ran the following program and it seemed to work fine and called up the play() method in InstrumentX. Now I wanted to see if I could call up the play method in WindX instead. So I changed line 20 to "i.play(new NoteX());" thus passing play() a NoteX instead of an int. But I keep getting an error. Whats wrong?

//WindError.java
class NoteX {
public static final int
MIDDLE_C = 0, C_SHARP = 1, C_FLAT = 2;
}

class InstrumentX {
public void play(int noteX) {
System.out.println("InstrumentX.play()");
}
}

class WindX extends InstrumentX {
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);
}
}

• Name that tune Jody Brown November 28, 2001 at 2:45 PM (2)
  • Thanks but... Anish November 28, 2001 at 3:14 PM (1)
    • Overloaded Matt Gerrans November 28, 2001 at 4:09 PM (0)