Audio

import java.awt.Dimension;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.sound.midi.MidiChannel;
import javax.sound.midi.MidiSystem;
import javax.sound.midi.Synthesizer;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.TitledBorder;

public class SoundTest extends JPanel {
	private static final long serialVersionUID = 1L;

	public SoundTest() throws Exception {
		setBorder(new TitledBorder("Click to Focus"));
		addKeyListener(new Player());
		setFocusable(true);
	}

	private class Player extends KeyAdapter {
		private MidiChannel channel;

		public Player() throws Exception {
			Synthesizer synth = MidiSystem.getSynthesizer();
			synth.open();
			channel = synth.getChannels()[0];
		}

		public void keyTyped(KeyEvent e) {
			channel.noteOn((int) e.getKeyChar(), 100);
			System.out.println((int) e.getKeyChar() + ":" + e.getKeyCode());
		}
	}

	public static void main(String[] args) throws Exception {
		JFrame frame = new JFrame("JPiano");
		frame.setMinimumSize(new Dimension(100, 100));
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setContentPane(new SoundTest());
		frame.setLocationRelativeTo(null);
		frame.setVisible(true);
	}
}