import javax.sound.midi.*;
import javax.swing.*;
import java.awt.event.*;
public class Noodirakend extends JApplet implements ActionListener{
  public void init(){
    JButton b=new JButton("Mängi");
    getContentPane().add(b);
    b.addActionListener(this);
  }

  public void actionPerformed(ActionEvent e){
   try{
    Synthesizer synthesizer=MidiSystem.getSynthesizer();
    synthesizer.open();
    MidiChannel kanal=synthesizer.getChannels()[0]; //kanal 0;
    int korgus=69; //A
    int valjus=65; //keskmine
    kanal.noteOn(korgus, valjus);
    Thread.sleep(1000);
    kanal.noteOff(korgus);
    synthesizer.close();
   }catch(Exception ex){
     ex.printStackTrace();
   }
  }
}