Alfonso Sanz

Hi!

Under "Understanding Views"

The text says: "... Both of these methods can throw a checked IOException, such as when the view class type is unsupported." 

But public static <V extends FileAttributeView> V getFileAttributeView(Path path, Class<V> type, LinkOption... options) does not throw any IOException.

Regars,

Hi!

I am sure it will be a great book and I hope there will be lots of test-like questions to practice!

Congrats to Sierra, Bates and Robson!

great and very very instructive answer!! I learnt a lot on your explanation. Thanks a lot John Damien Smith!!

PD: Indeed I had already used AudioClip.

Thanks again!

Great post and great book! Thanks Knute Snortum.

For the time being I am just invertigating how to play sounds and still not sure whethrt to use Clip.loop() or Mediaplayer.play(). It's not about JavaFX.

I also consider using "aplay" system call cause so far this approach is working best on Linux, where as I said above, two instanciations of MediaPlayer give sometimes MediaException.

In anycase, I'll consider to buy the book you recommend me. It looks quite interesting.

Thanks again.

Knute Snortum wrote:Instead of
for(int i=0;i<1000000;i++) { System.out.println(i); } // delay what about Thread.sleep(1000); // one second

That may not be the best way of getting a delay in JavaFX, though.

Thread.sleep() has the same effect. Both sounds at a time.

One more question:

Here is the second piece of code:

import java.io.File; import javafx.application.Application; import javafx.scene.media.Media; import javafx.scene.media.MediaPlayer; import javafx.stage.Stage; public class Clip extends Application {         @Override         public void start(Stage primaryStage) {             Media hit = new Media(new File("beep.wav").toURI().toString());             MediaPlayer player = new MediaPlayer(hit);             Media hit2 = new Media(new File("beep2.wav").toURI().toString());             MediaPlayer player2 = new MediaPlayer(hit2);             player.play();             for(int i=0;i<1000000;i++) { System.out.println(i); } // delay              player2.play();                     }         public static void main(String[] args) {              launch(args);         }     }

In spite of the delay, both sounds are being played in parallel. Why? How to make a real "gap"?

By the way... under Windows everything runs conveniently, but under RHEL,  when creating             MediaPlayer player2 = new MediaPlayer(hit2); looks like randomly I get MediaException in init(). Enybody knows??

Thanks in advance.

That's just what I needed! Thanks you Stephan van Hulst!

I'll give it a try.
Thanks!

I have also added Thread.sleep() with a time greater than the beep duration as parameter in between but only one os played.

I have also added Thread.sleep() with a time greater Thanksgiving the Jeep durstion in between but only one os played.

Hi!

I expect for the sound todo.be played twice because player.play() is called two times. Ten... why is sounding once?

BR,

Hi!

I have a question regarding this code snippet:

import java.io.File; import javafx.application.Application; import javafx.scene.media.Media; import javafx.scene.media.MediaPlayer; import javafx.stage.Stage; public class Clip extends Application {         @Override         public void start(Stage primaryStage) {             Media hit = new Media(new File("beep.wav").toURI().toString());             MediaPlayer player = new MediaPlayer(hit);             player.play();             player.play();         }         public static void main(String[] args) {              launch(args);         }     }


My question is why the sound is played only once instead of twice?

Other way... how to make the audio file to sound two times in a row?

Thanks in advance!!

You are right! Understood now!!

Thank you so much again, Rob.

Perfect! Thank you very much, Rob.

How did you come to that conclusion? Sorry, but still not seeing it.

Hello Guys,

I came accross a piece of Swing code based on a JTable. It is a nice code, but I spot something weird...

The third column of the JTable holds a JCombobox, but I see the first time pressing on the Combobox, even though the shown item is right, the highlighted one is always the first item (Spain). After choosing some item and make the ActionEvent trigger, next time you press on Combo, the item shadowed is the one chosen the time before.

Let's see the code:

import java.awt.BorderLayout; import java.awt.Component; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.ArrayList; import java.util.List; import javax.swing.AbstractCellEditor; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.SwingUtilities; import javax.swing.UIManager; import javax.swing.table.AbstractTableModel; import javax.swing.table.DefaultTableCellRenderer; import javax.swing.table.TableCellEditor; public class MyClass extends JFrame { private JTable table = new JTable(); private PersonTableModel tableModel; public MyClass() { List<Person> listPerson = new ArrayList<>(); listPerson.add(new Person("John", new Country("Japan"))); listPerson.add(new Person("Kim", new Country("South Korea"))); listPerson.add(new Person("Guterres", new Country("UK"))); List<Country> listCountry = new ArrayList<>(); listCountry.add(new Country("Spain")); listCountry.add(new Country("UK")); listCountry.add(new Country("Japan")); listCountry.add(new Country("South Korea")); listCountry.add(new Country("Canada")); tableModel = new PersonTableModel(listPerson); table.setModel(tableModel); table.setDefaultRenderer(Country.class, new CountryCellRenderer()); table.setDefaultEditor(Country.class, new CountryCellEditor(listCountry)); table.setRowHeight(25); JScrollPane scrollpane = new JScrollPane(table); scrollpane.setPreferredSize(new Dimension(400, 200)); add(scrollpane, BorderLayout.CENTER); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); pack(); setLocationRelativeTo(null); setVisible(true); } public static void main(String[] args) { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (Exception ex) { ex.printStackTrace(); } SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new MyClass(); } }); } } /******************/ class Person { private String name; private Country country; public Person(String name, Country country) { this.name = name; this.country = country; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Country getCountry() { return country; } public void setCountry(Country country) { this.country = country; } } /******************/ class PersonTableModel extends AbstractTableModel { private String[] columnNames = {"No.", "Name", "Country"}; private List<Person> listPerson = new ArrayList<>(); public PersonTableModel(List<Person> listPerson) { this.listPerson.addAll(listPerson); } @Override public int getColumnCount() { return columnNames.length; }     public String getColumnName(int column) {         return columnNames[column];     }         public Class getColumnClass(int column) {     return getValueAt(0, column).getClass();     } @Override public int getRowCount() { return listPerson.size(); } @Override public void setValueAt(Object value, int rowIndex, int columnIndex) { Person person = listPerson.get(rowIndex); switch (columnIndex) { case 1: person.setName((String) value); break; case 2: person.setCountry((Country) value); break; } } @Override public Object getValueAt(int rowIndex, int columnIndex) { Object returnValue = null; Person person = listPerson.get(rowIndex); switch (columnIndex) { case 0: returnValue = rowIndex + 1; break; case 1: returnValue = person.getName(); break; case 2: returnValue = person.getCountry(); break; } return returnValue; }     public boolean isCellEditable(int rowIndex, int columnIndex) {         return columnIndex > 0;     } } /******************/ class Country { private String name; public Country(String name) { super(); this.name = name; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String toString() { return this.name; } } /******************/ class CountryCellEditor extends AbstractCellEditor implements TableCellEditor, ActionListener { private Country country; private List<Country> listCountry; public CountryCellEditor(List<Country> listCountry) { this.listCountry = listCountry; } @Override public Object getCellEditorValue() { return this.country; } @Override public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) { if (value instanceof Country) { this.country = (Country) value; } JComboBox<Country> comboCountry = new JComboBox<Country>(); for (Country aCountry : listCountry) { comboCountry.addItem(aCountry); } comboCountry.setSelectedItem(country); comboCountry.addActionListener(this); if (isSelected) { comboCountry.setBackground(table.getSelectionBackground()); } else { comboCountry.setBackground(table.getSelectionForeground()); } return comboCountry; } @Override public void actionPerformed(ActionEvent event) { JComboBox<Country> comboCountry = (JComboBox<Country>) event.getSource(); this.country = (Country) comboCountry.getSelectedItem(); } } /******************/ class CountryCellRenderer extends DefaultTableCellRenderer { public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { if (value instanceof Country) { Country country = (Country) value; setText(country.getName()); } if (isSelected) { setBackground(table.getSelectionBackground()); } else { setBackground(table.getSelectionForeground()); } return this; } }

My question is... how to make the first time I press the combo for the app to highligt the item by defaut (for the first row: Japan) instead of the first item in listCountry (Spain)??

Thanks in advance...