[Ch14] Main code classes from book (d39b44da) · Commits · examples / Head First Java 3rd Edition

src/main/java/ch14/MiniMusicPlayer1.java

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Changes for src/main/java/ch14/MiniMusicPlayer1.java: 43 added lines, 0 removed lines.
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		package ch14;

		import javax.sound.midi.*;

		public class MiniMusicPlayer1 {

		public static void main(String[] args) {

		try {

		Sequencer sequencer = MidiSystem.getSequencer();
		sequencer.open();


		Sequence seq = new Sequence(Sequence.PPQ, 4);
		Track track = seq.createTrack();

		for (int i = 5; i < 61; i+= 4) {


		track.add(makeEvent(144,1,i,100,i));
		track.add(makeEvent(128,1,i,100,i + 2));

		} // end loop

		sequencer.setSequence(seq);
		sequencer.setTempoInBPM(220);
		sequencer.start();
		} catch (Exception ex) {ex.printStackTrace();}
		} // close main


		public static 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);

		}catch(Exception e) { }
		return event;
		}
		} // close class
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Changes for src/main/java/ch14/MiniMusicPlayer2.java: 51 added lines, 0 removed lines.
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		package ch14;

		import javax.sound.midi.*;
		public class MiniMusicPlayer2 implements ControllerEventListener {

		public static void main(String[] args) {
		MiniMusicPlayer2 mini = new MiniMusicPlayer2();
		mini.go();
		}
		public void go() {

		try {
		Sequencer sequencer = MidiSystem.getSequencer();
		sequencer.open();

		int[] eventsIWant = {127};
		sequencer.addControllerEventListener(this, eventsIWant);

		Sequence seq = new Sequence(Sequence.PPQ, 4);
		Track track = seq.createTrack();

		for (int i = 5; i < 60; i+= 4) {
		track.add(makeEvent(144,1,i,100,i));

		track.add(makeEvent(176,1,127,0,i));

		track.add(makeEvent(128,1,i,100,i + 2));
		} // end loop

		sequencer.setSequence(seq);
		sequencer.setTempoInBPM(220);
		sequencer.start();
		} catch (Exception ex) {ex.printStackTrace();}
		} // close


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

		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);

		}catch(Exception e) { }
		return event;
		}
		} // close class
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Changes for src/main/java/ch14/MyDrawPanel.java: 14 added lines, 0 removed lines.
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		package ch14;

		import java.awt.*;
		import javax.swing.*;

		class MyDrawPanel extends JPanel {

		public void paintComponent(Graphics g) {

		g.setColor(Color.orange);

		g.fillRect(20,50,100,100);
		}
		}
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Changes for src/main/java/ch14/SimpleAnimation.java: 51 added lines, 0 removed lines.
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		package ch14;

		import javax.swing.*;
		import java.awt.*;


		public class SimpleAnimation {

		int x = 70;
		int y = 70;

		public static void main (String[] args) {
		SimpleAnimation gui = new SimpleAnimation ();
		gui.go();
		}

		public void go() {
		JFrame frame = new JFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		MyDrawPanel drawPanel = new MyDrawPanel();

		frame.getContentPane().add(drawPanel);
		frame.setSize(300,300);
		frame.setVisible(true);


		for (int i = 0; i < 130; i++) {

		x++;
		y++;

		drawPanel.repaint();

		try {
		Thread.sleep(50);
		} catch(Exception ex) { }
		}

		}// close go() method


		class MyDrawPanel extends JPanel {

		public void paintComponent(Graphics g) {
		g.setColor(Color.green);
		g.fillOval(x,y,40,40);

		}
		} // close inner class
		} // close outer class
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