import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.applet.Applet;
import javax.sound.midi.*;

public class exam extends Applet{
  MidiChannel kanal;
  int valjus=65;
  int korgus=60;
  
public exam(){
   try{
    addMouseListener(new HiireKuular());  
    Synthesizer synthesizer=MidiSystem.getSynthesizer();
    synthesizer.open();
    kanal=synthesizer.getChannels()[0];   
   }catch(Exception viga){
      System.out.println(viga);
   }
  }

	public void paint (Graphics a){
	a.setColor(Color.red);
	a.drawRect(50,50,50,50);	
	a.setColor(Color.green);
	a.drawRect(50,125,50,50);
	a.setColor(Color.blue);
	a.drawRect(50,200,50,50);
	}

class HiireKuular extends MouseAdapter{
    public void mousePressed(MouseEvent e){
     if(e.getX()>50 && e.getX()<100 && e.getY()>50 && e.getY()<100){     
      Graphics g=exam.this.getGraphics();	
      g.setColor(Color.white);
      g.fillRect(0,0,300,300);
	   g.setColor(Color.green);
	   g.drawRect(50,125,50,50);
	   g.setColor(Color.blue);
	   g.drawRect(50,200,50,50);
      g.setColor(Color.red);
      g.fillRect(50,50,50,50);
      g.drawRect(50, e.getY(), 0, 0);
      }
      
     if(e.getX()>50 && e.getX()<100 && e.getY()>125 && e.getY()<175){
      Graphics g=exam.this.getGraphics();
      g.setColor(Color.white);
      g.fillRect(0,0,300,300);
      g.setColor(Color.red);
	   g.drawRect(50,50,50,50);	
	   g.setColor(Color.blue);
	   g.drawRect(50,200,50,50);
      g.setColor(Color.green);
      g.fillRect(50,125,50,50);
      g.drawRect(50, e.getY(), 0, 0);
      }

    if(e.getX()>50 && e.getX()<100 && e.getY()>200 && e.getY()<250){
      Graphics g=exam.this.getGraphics();
      g.setColor(Color.white);
      g.fillRect(0,0,300,300);
      g.setColor(Color.red);
	   g.drawRect(50,50,50,50);	
	   g.setColor(Color.green);
	   g.drawRect(50,125,50,50);
      g.setColor(Color.blue);
      g.fillRect(50,200,50,50);
      g.drawRect(50, e.getY(), 0, 0);
      }     
      
    korgus=127-e.getY()/5;  
    kanal.noteOn(korgus, valjus);
  
      
    }
    public void mouseReleased(MouseEvent e){
      kanal.noteOff(korgus);
    }
  }

public static void main(String argumendid[]){
	     Frame f=new Frame("Exam");
	     f.setSize(500, 500);
	     f.setLocation(300,300);
	     f.add(new exam());
	     f.setVisible(true);
}}