import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
import javax.sound.midi.*;
public class Akordion3 extends JApplet implements MouseListener{
   JButton fNupp=new YmmarguneNupp("F");
   JButton cNupp=new YmmarguneNupp("C");
   JButton gNupp=new YmmarguneNupp("G");
   Synthesizer synt;
   MidiChannel kanal;
   int valjus=100;
   public Akordion3(){
    try{
     synt=MidiSystem.getSynthesizer();
	 synt.open();
	 kanal=synt.getChannels()[0];
	 getContentPane().setLayout(null);
	 fNupp.setBounds(10, 10, 30, 30);
	 cNupp.setBounds(50, 10, 30, 30);
	 gNupp.setBounds(90, 10, 30, 30);
     getContentPane().add(fNupp);
     getContentPane().add(cNupp);
     getContentPane().add(gNupp);
	 fNupp.addMouseListener(this);
	 cNupp.addMouseListener(this);
	 gNupp.addMouseListener(this);
	} catch(Exception ex){ex.printStackTrace();}
   }
   public void mangiKolmkola(int algnoot){
     kanal.noteOn(algnoot   ,valjus);
     kanal.noteOn(algnoot+4 ,valjus);
     kanal.noteOn(algnoot+7 ,valjus);
   }
   public void mousePressed(MouseEvent e){
      if(e.getSource()==fNupp){mangiKolmkola(65); }
      if(e.getSource()==cNupp){mangiKolmkola(60); }
      if(e.getSource()==gNupp){mangiKolmkola(67); }
   }
   public void mouseReleased(MouseEvent e){
      kanal.allNotesOff();
   }
   public void mouseClicked(MouseEvent e){}
   public void mouseEntered(MouseEvent e){}
   public void mouseExited(MouseEvent e){}
   public static void main(String[] arg){
     JFrame f=new JFrame();
	 f.add(new Akordion3());
	 f.setSize(300, 300);
	 f.setVisible(true);
   }
}