[Ch14] Updating MiniMusicPlayer2 with updated makeEvent method, and to use lambdas (2ac7bb21) · Commits · examples / Head First Java 3rd Edition

src/main/java/ch14/MiniMusicPlayer2.java

+5 −8

Changes for src/main/java/ch14/MiniMusicPlayer2.java: 5 added lines, 8 removed lines.
Original line number	Diff line number	Diff line
		@@ -4,7 +4,7 @@ import javax.sound.midi.*;

		import static javax.sound.midi.ShortMessage.*;

		public class MiniMusicPlayer2 implements ControllerEventListener {
		public class MiniMusicPlayer2 {
		public static void main(String[] args) {
		MiniMusicPlayer2 mini = new MiniMusicPlayer2();
		mini.go();
		@@ -16,7 +16,7 @@ public class MiniMusicPlayer2 implements ControllerEventListener {
		sequencer.open();

		int[] eventsIWant = {127};
		sequencer.addControllerEventListener(this, eventsIWant);
		sequencer.addControllerEventListener(event -> System.out.println("la"), eventsIWant);

		Sequence seq = new Sequence(Sequence.PPQ, 4);
		Track track = seq.createTrack();
		@@ -35,15 +35,12 @@ public class MiniMusicPlayer2 implements ControllerEventListener {
		}
		}

		public void controlChange(ShortMessage event) {
		System.out.println("la");
		}

		public MidiEvent makeEvent(int comd, int chan, int one, int two, int tick) {
		// for some commands one = note, and for others one = instrument
		public static MidiEvent makeEvent(int cmd, int chnl, int one, int two, int tick) {
		MidiEvent event = null;
		try {
		ShortMessage msg = new ShortMessage();
		msg.setMessage(comd, chan, one, two);
		msg.setMessage(cmd, chnl, one, two);
		event = new MidiEvent(msg, tick);
		} catch (Exception e) {
		e.printStackTrace();

+3 −5

Changes for src/main/java/ch14/MiniMusicPlayer3.java: 3 added lines, 5 removed lines.
Original line number	Diff line number	Diff line
		@@ -50,21 +50,19 @@ public class MiniMusicPlayer3 {
		}
		}


		public MidiEvent makeEvent(int comd, int chan, int one, int two, int tick) {
		// for some commands one = note, and for others one = instrument
		public static MidiEvent makeEvent(int cmd, int chnl, int one, int two, int tick) {
		MidiEvent event = null;
		try {
		ShortMessage msg = new ShortMessage();
		msg.setMessage(comd, chan, one, two);
		msg.setMessage(cmd, chnl, one, two);
		event = new MidiEvent(msg, tick);

		} catch (Exception e) {
		e.printStackTrace();
		}
		return event;
		}


		class MyDrawPanel extends JPanel implements ControllerEventListener {
		private boolean msg = false;