// the code didn't attach:
package com.beats.tools;
import java.awt.*;
import javax.swing.*;
import javax.sound.midi.*;
import java.util.*;
import java.awt.event.*;
import java.io.*;
public class Beatbox {
JPanel mainpanel;
ArrayList<JCheckBox> checkboxList;
Sequencer sequencer;
Sequence sequence;
Track track;
JFrame theFrame;
private JFileChooser chooser;
String[] instrumentNames = { "Bass Drum", "Closed Hi-Hat", "Open Hi-Hat",
"Acoustic Snare", "Crash Cymbal", "Hand Clap", "High Tom",
"Hi Bongo", "Maracas", "Whistle", "Low Conga", "Cowbell",
"Vibraslap", "Low-mid Tom", "High Agogo", "Open Hi Conga" };
int[] instruments = { 35, 42, 46, 38, 49, 39, 50, 60, 70, 72, 64, 56, 58,
47, 67, 63 };
public static void main(String[] args) {
new Beatbox().buildGUI();
}// end main
public void buildGUI() {
chooser = new JFileChooser( new File( System.getProperty("user.home") ));
theFrame = new JFrame("Cyber BeatBox");
theFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
BorderLayout layout = new BorderLayout();
JPanel background = new JPanel(layout);
background.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
checkboxList = new ArrayList<JCheckBox>();
Box buttonBox = new Box(BoxLayout.Y_AXIS);
JButton start = new JButton("Start");
start.addActionListener(new Mystartlistener());
buttonBox.add(start);
JButton stop = new JButton("Stop");
stop.addActionListener(new Mystoplistener());
buttonBox.add(stop);
JButton uptempo = new JButton("Tempo up");
uptempo.addActionListener(new Myuptempolistener());
buttonBox.add(uptempo);
JButton downtempo = new JButton("Tempo down");
downtempo.addActionListener(new Mydowntempolistener());
buttonBox.add(downtempo);
JButton serialize = new JButton("Serialize");
serialize.addActionListener(new MySendListener());
buttonBox.add(serialize);
JButton restore = new JButton("Restore");
restore.addActionListener(new MyReadInListener());
buttonBox.add(restore);
Box nameBox = new Box(BoxLayout.Y_AXIS);
for (int i = 0; i < 16; i++) {
nameBox.add(new Label(instrumentNames[i]));
}// end for loop
background.add(BorderLayout.EAST, buttonBox);
background.add(BorderLayout.WEST, nameBox);
theFrame.getContentPane().add(background);
GridLayout grid = new GridLayout(16, 16);
grid.setVgap(1);
grid.setHgap(2);
mainpanel = new JPanel(grid);
background.add(BorderLayout.CENTER, mainpanel);
for (int i = 0; i < 256; i++) {
JCheckBox c = new JCheckBox();
c.setSelected(false);
checkboxList.add(c);
mainpanel.add(c);
}// end for loop
setUpMidi();
theFrame.setBounds(50, 50, 300, 300);
theFrame.pack();
theFrame.setVisible(true);
}// end buildgui
public void setUpMidi() {
try {
sequencer = MidiSystem.getSequencer();
sequencer.open();
sequence = new Sequence(Sequence.PPQ, 4);
track = sequence.createTrack();
sequencer.setTempoInBPM(120);
}// end try
catch (Exception e) {
e.printStackTrace();
}// end catch
}// end setupmidi
public void buildTrackandStart() {
int[] trackList = null;
sequence.deleteTrack(track);
track = sequence.createTrack();
for (int i = 0; i < 16; i++) {
trackList = new int[16];
int key = instruments[i];
for (int j = 0; j < 16; j++) {
JCheckBox jc = (JCheckBox) checkboxList.get(j + (16 * i));
if (jc.isSelected()) {
trackList[j] = key;
}// end if
else {
trackList[j] = 0;
}// end else
}// end inner for loop
makeTracks(trackList);
track.add(makeEvent(176, 1, 127, 0, 16));
}// end outer for loop
track.add(makeEvent(192, 9, 1, 0, 15));
try {
sequencer.setSequence(sequence);
sequencer.setLoopCount(sequencer.LOOP_CONTINUOUSLY);
sequencer.start();
sequencer.setTempoInBPM(120);
}// end try
catch (Exception e) {
e.printStackTrace();
}// end catch
}// end buildtrackandstart
public class Mystartlistener implements ActionListener {
public void actionPerformed(ActionEvent a) {
buildTrackandStart();
}// end actionperformed
}// end inner class start
public class Mystoplistener implements ActionListener {
public void actionPerformed(ActionEvent a) {
sequencer.stop();
}// end actionperformed
}// end inner class stop
public class Myuptempolistener implements ActionListener {
public void actionPerformed(ActionEvent a) {
float tempoFactor = sequencer.getTempoFactor();
sequencer.setTempoFactor((float) (tempoFactor * 1.03));
}// end actionperformed
}// end inner class uptempo
public class Mydowntempolistener implements ActionListener {
public void actionPerformed(ActionEvent a) {
float tempoFactor = sequencer.getTempoFactor();
sequencer.setTempoFactor((float) (tempoFactor * .97));
}// end actionperformed
}// end innerclass downtempo
public class MySendListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
boolean[] checkboxState = new boolean[256];
for (int i = 0; i < 256; i++) {
JCheckBox check = (JCheckBox) checkboxList.get(i);
if (check.isSelected()) {
checkboxState[i] = true;
}// end if
}// end for loop
try {
int result = chooser.showSaveDialog(Beatbox.this.theFrame);
if(result == JFileChooser.APPROVE_OPTION)
{
FileOutputStream fileStream = new FileOutputStream( chooser.getSelectedFile()
// new File( "Checkbox.ser")
);
ObjectOutputStream os = new ObjectOutputStream(fileStream);
os.writeObject(checkboxState);
}
}// end try
catch (Exception ex) {
ex.printStackTrace();
}// end catch
}// end actionperformed
}// end innerclass mysendlistener
public class MyReadInListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
boolean[] checkboxState = null;
try {
int result = chooser.showOpenDialog(Beatbox.this.theFrame);
if(result == JFileChooser.APPROVE_OPTION)
{
FileInputStream filein = new FileInputStream(
chooser.getSelectedFile()
// new File( "Checkbox.ser")
);
ObjectInputStream is = new ObjectInputStream(filein);
checkboxState = (boolean[]) is.readObject();
}
}// end try
catch (Exception ex) {
ex.printStackTrace();
}// end catch
for (int i = 0; i < 256; i++) {
JCheckBox check = (JCheckBox) checkboxList.get(i);
if (checkboxState[i]) {
check.setSelected(true);
}// end if
else {
check.setSelected(false);
}// end else
}// end for loop
sequencer.stop();
}// end actionperformed
}// end innerclass
public void loadFile(File file) {
try {
BufferedReader reader = new BufferedReader(new FileReader(file));
reader.close();
}// end try
catch (IOException ex) {
System.out.println("Couldn't read the file");
ex.printStackTrace();
}// end catch
}// end loadfile
public void makeTracks(int[] list) {
for (int i = 0; i < 16; i++) {
int key = list[i];
if (key != 0) {
track.add(makeEvent(144, 9, key, 100, i));
track.add(makeEvent(128, 9, key, 100, i + 1));
}// end if
}// end for loop
}// end maketracks
public MidiEvent makeEvent(int comd, int chan, int one, int two, int tick) {
MidiEvent event = null;
try {
ShortMessage a = new ShortMessage();
a.setMessage(comd, chan, one, two);
event = new MidiEvent(a, tick);
}// end try
catch (Exception e) {
e.printStackTrace();
}// end catch
return event;
}// end makeevent
}// end class beatbox