import mypackage.Appliance;
import mypackage.VolumeControl;
import mypackage.ToneControl;

//import mypackage.*;
class MultimediaPC extends Appliance implements VolumeControl,ToneControl
{
	private int price;

	//實現父類方法
	public int getPrice(){ return price;}
	public void setPrice(int p){ price=p;}
	
	//實現接口
	public String volume()
	{
		return "音量控制";
	}
	public String tone()
	{
		return "音質控制";
	}
}
	
public class Demo 
{
	public static String priceStr(Appliance a)//形參為抽象類
	{
		Integer i=new Integer(a.getPrice());
		return i.toString();
	}
	
	public static String vc(VolumeControl v)//形參為接口
	{
		return v.volume();
	}
	
	public static String tc(ToneControl t)//形參為接口
	{
		return t.tone();
	}
	
	public static void main(String args[])
	{
		MultimediaPC pc=new MultimediaPC();
		pc.setPrice(8888);
		System.out.println(Appliance.MAKER+"的PC機有");
		System.out.print(vc(pc)+"和");
		System.out.println(tc(pc)+"功能");
		System.out.println("價格為："+priceStr(pc));
	}
}