[Ch15] Formatting and warnings for BeatBoxFinal (83c15e80) · Commits · examples / Head First Java 3rd Edition

src/main/java/appA/BeatBoxFinal.java

+65 −81

Changes for src/main/java/appA/BeatBoxFinal.java: 65 added lines, 81 removed lines.
Original line number	Diff line number	Diff line
		@@ -16,29 +16,27 @@ import java.util.Iterator;
		import java.util.Vector;

		public class BeatBoxFinal {
		JFrame theFrame;
		JPanel mainPanel;
		JList incomingList;
		JTextField userMessage;
		ArrayList<JCheckBox> checkboxList;
		int nextNum;
		Vector<String> listVector = new Vector<String>();
		String userName;
		ObjectOutputStream out;
		ObjectInputStream in;
		HashMap<String, boolean[]> otherSeqsMap = new HashMap<String, boolean[]>();

		Sequencer sequencer;
		Sequence sequence;
		Sequence mySequence = null;
		Track track;


		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"};
		private JList<String> incomingList;
		private JTextField userMessage;
		private ArrayList<JCheckBox> checkboxList;
		private int nextNum;
		private final Vector<String> listVector = new Vector<>();
		private String userName;
		private ObjectOutputStream out;
		private ObjectInputStream in;
		private final HashMap<String, boolean[]> otherSeqsMap = new HashMap<>();

		private Sequencer sequencer;
		private Sequence sequence;
		private final Sequence mySequence = null;
		private Track track;

		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 BeatBoxFinal().startUp(args[0]); // args[0] is your user ID/screen name
		}
		@@ -53,20 +51,19 @@ public class BeatBoxFinal {
		Thread remote = new Thread(new RemoteReader());
		remote.start();
		} catch (Exception ex) {
		System.out.println("couldn’t connect-you’ll have to play alone.");
		System.out.println("Couldn't connect-you'll have to play alone.");
		}
		setUpMidi();
		buildGUI();
		} // close startUp
		}

		public void buildGUI() {

		theFrame = new JFrame("Cyber BeatBox");
		JFrame theFrame = new JFrame("Cyber BeatBox");
		BorderLayout layout = new BorderLayout();
		JPanel background = new JPanel(layout);
		background.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));

		checkboxList = new ArrayList<JCheckBox>();
		checkboxList = new ArrayList<>();

		Box buttonBox = new Box(BoxLayout.Y_AXIS);
		JButton start = new JButton("Start");
		@@ -93,7 +90,7 @@ public class BeatBoxFinal {

		buttonBox.add(userMessage);

		incomingList = new JList();
		incomingList = new JList<>();
		incomingList.addListSelectionListener(new MyListSelectionListener());
		incomingList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		JScrollPane theList = new JScrollPane(incomingList);
		@@ -112,7 +109,7 @@ public class BeatBoxFinal {
		GridLayout grid = new GridLayout(16, 16);
		grid.setVgap(1);
		grid.setHgap(2);
		mainPanel = new JPanel(grid);
		JPanel mainPanel = new JPanel(grid);
		background.add(BorderLayout.CENTER, mainPanel);

		for (int i = 0; i < 256; i++) {
		@@ -120,12 +117,12 @@ public class BeatBoxFinal {
		c.setSelected(false);
		checkboxList.add(c);
		mainPanel.add(c);
		} // end loop
		}

		theFrame.setBounds(50, 50, 300, 300);
		theFrame.pack();
		theFrame.setVisible(true);
		} // close buildGUI
		}

		public void setUpMidi() {
		try {
		@@ -137,24 +134,21 @@ public class BeatBoxFinal {
		} catch (Exception e) {
		e.printStackTrace();
		}

		} // close setUpMidi

		}

		public void buildTrackAndStart() {
		ArrayList<Integer> trackList = null; // this will hold the instruments for each
		ArrayList<Integer> trackList; // this will hold the instruments for each
		sequence.deleteTrack(track);
		track = sequence.createTrack();

		for (int i = 0; i < 16; i++) {

		trackList = new ArrayList<Integer>();
		trackList = new ArrayList<>();

		for (int j = 0; j < 16; j++) {
		JCheckBox jc = (JCheckBox) checkboxList.get(j + (16 * i));
		JCheckBox jc = checkboxList.get(j + (16 * i));
		if (jc.isSelected()) {
		int key = instruments[i];
		trackList.add(new Integer(key));
		trackList.add(key);
		} else {
		trackList.add(null); // because this slot should be empty in the track
		}
		@@ -170,27 +164,26 @@ public class BeatBoxFinal {
		} catch (Exception e) {
		e.printStackTrace();
		}
		} // close method
		}

		public class MyStartListener implements ActionListener {
		public void actionPerformed(ActionEvent a) {
		buildTrackAndStart();
		} // close actionPerformed
		} // close inner class
		}
		}

		public class MyStopListener implements ActionListener {
		public void actionPerformed(ActionEvent a) {
		sequencer.stop();
		} // close actionPerformed
		} // close inner class
		}
		}

		public class MyUpTempoListener implements ActionListener {
		public void actionPerformed(ActionEvent a) {
		float tempoFactor = sequencer.getTempoFactor();
		sequencer.setTempoFactor((float) (tempoFactor * 1.03));
		} // close actionPerformed
		} // close inner class

		}
		}

		public class MyDownTempoListener implements ActionListener {
		public void actionPerformed(ActionEvent a) {
		@@ -204,12 +197,11 @@ public class BeatBoxFinal {
		// make an arraylist of just the STATE of the checkboxes
		boolean[] checkboxState = new boolean[256];
		for (int i = 0; i < 256; i++) {
		JCheckBox check = (JCheckBox) checkboxList.get(i);
		JCheckBox check = checkboxList.get(i);
		if (check.isSelected()) {
		checkboxState[i] = true;
		}
		} // close loop
		String messageToSend = null;
		}
		try {
		out.writeObject(userName + nextNum++ + ": " + userMessage.getText());
		out.writeObject(checkboxState);
		@@ -217,28 +209,26 @@ public class BeatBoxFinal {
		System.out.println("Sorry dude. Could not send it to the server.");
		}
		userMessage.setText("");
		} // close actionPerformed
		} // close inner class
		}
		}

		public class MyListSelectionListener implements ListSelectionListener {
		public void valueChanged(ListSelectionEvent le) {
		if (!le.getValueIsAdjusting()) {
		String selected = (String) incomingList.getSelectedValue();
		String selected = incomingList.getSelectedValue();
		if (selected != null) {
		// now go to the map, and change the sequence
		boolean[] selectedState = (boolean[]) otherSeqsMap.get(selected);
		boolean[] selectedState = otherSeqsMap.get(selected);
		changeSequence(selectedState);
		sequencer.stop();
		buildTrackAndStart();
		}
		}
		} // close valueChanged
		} // close inner class

		}
		}

		public class RemoteReader implements Runnable {
		boolean[] checkboxState = null;
		String nameToShow = null;
		Object obj = null;

		public void run() {
		@@ -251,44 +241,38 @@ public class BeatBoxFinal {
		otherSeqsMap.put(nameToShow, checkboxState);
		listVector.add(nameToShow);
		incomingList.setListData(listVector);
		} // close while
		}
		} catch (Exception ex) {
		ex.printStackTrace();
		}
		} // close run
		} // close inner class
		}
		}

		public class MyPlayMineListener implements ActionListener {
		public void actionPerformed(ActionEvent a) {
		if (mySequence != null) {
		sequence = mySequence; // restore to my original
		sequence = mySequence;
		}
		}
		}
		} // close actionPerformed
		} // close inner class

		public void changeSequence(boolean[] checkboxState) {
		for (int i = 0; i < 256; i++) {
		JCheckBox check = (JCheckBox) checkboxList.get(i);
		if (checkboxState[i]) {
		check.setSelected(true);
		} else {
		check.setSelected(false);
		JCheckBox check = checkboxList.get(i);
		check.setSelected(checkboxState[i]);
		}
		}
		} // close loop
		} // close changeSequence

		public void makeTracks(ArrayList list) {
		Iterator it = list.iterator();
		public void makeTracks(ArrayList<Integer> list) {
		Iterator<Integer> it = list.iterator();
		for (int i = 0; i < 16; i++) {
		Integer num = (Integer) it.next();
		Integer num = it.next();
		if (num != null) {
		int numKey = num.intValue();
		track.add(makeEvent(144, 9, numKey, 100, i));
		track.add(makeEvent(128, 9, numKey, 100, i + 1));
		track.add(makeEvent(144, 9, num, 100, i));
		track.add(makeEvent(128, 9, num, 100, i + 1));
		}
		}
		}
		} // close loop
		} // close makeTracks()


		public MidiEvent makeEvent(int comd, int chan, int one, int two, int tick) {
		MidiEvent event = null;
		@@ -296,12 +280,12 @@ public class BeatBoxFinal {
		ShortMessage a = new ShortMessage();
		a.setMessage(comd, chan, one, two);
		event = new MidiEvent(a, tick);
		} catch (Exception e) {
		} catch (Exception ignored) {
		}
		return event;
		} // close makeEvent
		}

		} // close class
		}