package com.jun.plugin.javase.winterHomeWork.Exercise6;

public class InstrumentTest {
	public static void main(String[] args) {
		
	}
}
class Instrument{
	void play(){
		
	}
}
class Piano extends Instrument{
	void play(){
		System.out.println("���ٵ���");
	}
}
class Violin extends Instrument{
	void play(){
		System.out.println("С���ٵ���");
	}
}
