?? music5.java.bak
字號(hào):
//c08 : Music5.java
import java.util.*;
interface Instrument
{
int i=5;
void play();
String what();
void adjust();
}
class Wind implements Instrument
{
public void play()
{
System.out.println("Wind.play()");
}
public String what()
{
return "Wind";
}
public void adjust(){}
}
class Percussion implements Instrument
{
public void play()
{
System.out.println("Percussion.play()");
}
public String what()
{
return "Percussion";
}
public void adjust(){}
}
class Stringed implements Instrument
{
public void play()
{
System.out.println("Stringed.play()");
}
public String what()
{
return "Stringed";
}
public void adjust(){}
}
class Brass extends Wind
{
public void play()
{
System.out.println("Brass.play()");
}
public void adjust()
{
System.out.println("Brass.adjust()");
}
}
class Woodwind extends Wind
{
public void play()
{
System.out.println("Woodwind.play");
}
public String what()
{
return "Woodwind";
}
}
public class Music5
{
static void tune(Instrument i)
{
i.play();
}
static void tuneAll(Instrument[] e)
{
for(int i=0;i<e.length;i++)
{
tune(e[i]);
}
}
public static void main(String [] args)
{
Instrument [] orchestra =new Instrument[5];
int i=0;
orchestra[i++]=new Wind();
orchestra[i++]=new Percussion();
orchestra[i++]=new Stringed();
orchestra[i++]=new Brass();
orchestra[i++]=new Woodwind();
tuneAll(oechestra);
}
}
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