FULL PRODUCT VERSION :
java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)
Java HotSpot(TM) 64-Bit Server VM (build 21.0-b17, mixed mode)
ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]
A DESCRIPTION OF THE PROBLEM :
Calls to javax.sound.sampled.AudioSystem.getAudioInputStream which worked in Java 6 fail in Java 7 because the underlying stream does not support Mark/Reset. This is not backwards compatible, and should be flagged in the release notes to Java 7. If it is flagged, I apologise in advance - I must have missed it. Anyway, I can see no reason for insisting that audio streams have to be markable - all the program does is make a short clip.
I hope I have chosen the correct subtopic - there didn't seem to be one for javax.sound.
REGRESSION. Last worked in version 6u26
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile and run the program (you will need a short audio file in the "Sounds" directory) under both Java 6 and 7.
I have been using NetBeans 6 to generate the JAR file. Netbeans 7 gives the same result.
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
A blank panel.
ACTUAL -
Under Java 6 it shows a blank panel. Under Java 7 there is a program-generated error message showing the problem.
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
package com.ptoye.Metronome1;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
import javax.swing.JOptionPane;
/**
*
* @author PToye
*/
public class jfMetronome extends javax.swing.JFrame {
/**
* Number of positions of the metronome display. Must be odd.
*/
private Clip clickClip = null;
/** Creates new form jfMetronome */
public jfMetronome() {
InputStream clickInputStream = null;
File clickSound = null;
initComponents();
Class thisClass = this.getClass();
URL clickURL = thisClass.getResource("Sounds/clickmono.wav");
URI clickURI = null;
try {
clickURI = clickURL.toURI();
} catch (URISyntaxException ex) {
Logger.getLogger(jfMetronome.class.getName()).log(Level.SEVERE, "URI Syntax exception", ex);
}
String clickScheme = clickURI.getScheme();
if (clickScheme.equals("file")) {
try {
clickSound = new File(clickURI);
clickInputStream = new FileInputStream(clickSound);
} catch (Exception e) {
JOptionPane.showMessageDialog(pnlMnome, "Cannot create file from " + clickURI);
}
} else if (clickScheme.equals("jar")) {
String clickJarFileRef = clickURI.getSchemeSpecificPart();
int shriekPos = clickJarFileRef.indexOf("!");
if (shriekPos < 0) {
JOptionPane.showMessageDialog(pnlMnome, "Cannot parse Jar file reference: no \"!\"");
} else {
String jarFileName = clickJarFileRef.substring(0, shriekPos);
String clickFileName = clickJarFileRef.substring(shriekPos + 1);
if (jarFileName.startsWith("file:")) {
jarFileName=jarFileName.substring(5);
}
if (clickFileName.startsWith("/")) {
clickFileName=clickFileName.substring(1);
}
JarFile jf = null;
try {
jf = new JarFile(jarFileName);
} catch (IOException ex) {
JOptionPane.showMessageDialog(pnlMnome, "Cannot get JAR file:" + jarFileName);
}
JarEntry je = jf.getJarEntry(clickFileName);
if (je != null) {
try {
clickInputStream = jf.getInputStream(je);
// JOptionPane.showMessageDialog(pnlMnome, "inputStream="+clickInputStream);
} catch (IOException ex) {
JOptionPane.showMessageDialog(pnlMnome, "Cannot create input stream:" + je);
} catch (Exception e) {
JOptionPane.showMessageDialog(pnlMnome, "Exception in input stream:"+e);
}
} else {
JOptionPane.showMessageDialog(pnlMnome, "Cannot find file in JAR: " + clickFileName);
}
}
}
if (clickInputStream == null) {
JOptionPane.showMessageDialog(pnlMnome, "Cannot find click file");
System.exit(3);
} else {
// JOptionPane.showMessageDialog(pnlMnome, "Click file found OK: mark/reset="+clickInputStream.markSupported());
AudioInputStream audioInputStream = null;
try {
audioInputStream = AudioSystem.getAudioInputStream(clickInputStream);
} catch (UnsupportedAudioFileException ex) {
JOptionPane.showMessageDialog(pnlMnome, "Audio file exception "+ ex);
System.exit(1);
} catch (IOException ex) {
// ****** THIS IS THE EXCEPTION!!!! ******
JOptionPane.showMessageDialog(pnlMnome, "IO exception " + ex);
System.exit(2);
}
AudioFormat audioFormat = audioInputStream.getFormat();
DataLine.Info dataLineInfo = new DataLine.Info(
Clip.class, audioFormat);
try {
clickClip = (Clip) AudioSystem.getLine(dataLineInfo);
} catch (LineUnavailableException ex) {
// Logger.getLogger(this.class.getName()).log(Level.SEVERE, null, ex);
// System.exit(1);
}
try {
clickClip.open(audioInputStream);
} catch (LineUnavailableException ex) {
JOptionPane.showMessageDialog(pnlMnome, "Click line unavailable:"+audioInputStream);
// Logger.getLogger(TrySound.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
JOptionPane.showMessageDialog(pnlMnome, "IO exception opening click stream"+audioInputStream);
// Logger.getLogger(TrySound.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
pnlMnome = new javax.swing.JPanel();
FormListener formListener = new FormListener();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Metronome �� Peter Toye");
addWindowListener(formListener);
getContentPane().setLayout(new javax.swing.BoxLayout(getContentPane(), javax.swing.BoxLayout.LINE_AXIS));
pnlMnome.setBackground(new java.awt.Color(0, 0, 0));
pnlMnome.setPreferredSize(new java.awt.Dimension(800, 600));
pnlMnome.setLayout(null);
getContentPane().add(pnlMnome);
pack();
}
// Code for dispatching events from components to event handlers.
private class FormListener implements java.awt.event.WindowListener {
FormListener() {}
public void windowActivated(java.awt.event.WindowEvent evt) {
}
public void windowClosed(java.awt.event.WindowEvent evt) {
}
public void windowClosing(java.awt.event.WindowEvent evt) {
}
public void windowDeactivated(java.awt.event.WindowEvent evt) {
}
public void windowDeiconified(java.awt.event.WindowEvent evt) {
}
public void windowIconified(java.awt.event.WindowEvent evt) {
}
public void windowOpened(java.awt.event.WindowEvent evt) {
if (evt.getSource() == jfMetronome.this) {
jfMetronome.this.formWindowOpened(evt);
}
}
}// </editor-fold>
private void formWindowOpened(java.awt.event.WindowEvent evt) {
if (!pnlMnome.requestFocusInWindow()) {
JOptionPane.showMessageDialog(this, "Cannot get focus for panel");
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new jfMetronome().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JPanel pnlMnome;
// End of variables declaration
}
---------- END SOURCE ----------
CUSTOMER SUBMITTED WORKAROUND :
Have not found one yet.