Ok this one is really weird. Every first time my application opens a JFileChooser it throws a IOException then some icons don’t show properly.
java.io.IOException
at sun.awt.image.GifImageDecoder.readHeader(GifImageDecoder.java:265)
at sun.awt.image.GifImageDecoder.produceImage(GifImageDecoder.java:102)
at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:246)
at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:172)
at sun.awt.image.ImageFetcher.run(ImageFetcher.java:136)
Now when I dig into the error, it seems like on one icon when it tries to read the header, it retrieve only the first 8 bytes which is not enough. I’ve have checked the icons files and they all seem OK.
I’ve tried to override the icon file with another one that loads properly before this error but same thing.
Here is my stack when breaking on this error :
Daemon Thread [Image Fetcher 0] (Suspended (exception IOException))
GifImageDecoder.readHeader() line: 265 [local variables unavailable]
GifImageDecoder.produceImage() line: 102 [local variables unavailable]
ByteArrayImageSource(InputStreamImageSource).doFetch() line: 246
ImageFetcher.fetchloop() line: 172
ImageFetcher.run() line: 136 [local variables unavailable]
Here is my variable value when digging into GifImageDecoder instance.
source ByteArrayImageSource (id=272)
awaitingFetch false
consumers null
decoder GifImageDecoder (id=271)
decoders GifImageDecoder (id=271)
imagedata (id=307)
[0] 71
[1] 73
[2] 70
[3] 56
[4] 57
[5] 97
[6] 16
[7] 13
[8] 10
imagelength 9
imageoffset 0
Normally, this imagedata should be way bigger. First 10 bytes is header but it only retrieve 8 bytes as you can see. After this exception, every other icon from JFileChooser doesn’t load properly.
This is a proper call to readHeader() :
source ByteArrayImageSource (id=208)
awaitingFetch false
consumers null
decoder GifImageDecoder (id=207)
decoders GifImageDecoder (id=207)
imagedata (id=223)
[0...99]
[100...199]
[200...299]
[300...399]
[400...499]
[500...599]
[600...699]
[700...799]
[800...899]
[900...979]
imagelength 980
imageoffset 0
The buffer is fully loaded with an icon right before the icon that throws an error.
Here is an exemple of where it could crash (it happens in several part of my code, whenever I first load my system icons) :
public class DirectoryBrowser extends JFileChooser{
private String suffixAccepted = null;
public DirectoryBrowser(File file, String chooserTitle, String approveOpenBtnText, String suffixAccepted)
{
super(file);
this.suffixAccepted = suffixAccepted;
init(chooserTitle, approveOpenBtnText);
}
when it enters in super(file) it goes there :
Thread [AWT-EventQueue-0] (Suspended)
Object.wait(long) line: not available [native method]
MediaTracker.waitForID(int, long) line: 651
ImageIcon.loadImage(Image) line: 234
ImageIcon.<init>(byte[]) line: 215
SwingUtilities2$2.createValue(UIDefaults) line: 1105
UIDefaults.getFromHashtable(Object) line: 185
UIDefaults.get(Object) line: 130
MultiUIDefaults.get(Object) line: 44
MultiUIDefaults(UIDefaults).getIcon(Object) line: 411
UIManager.getIcon(Object) line: 613
IronFileChooserUI(BasicFileChooserUI).installIcons(JFileChooser) line: 233
IronFileChooserUI(BasicFileChooserUI).installDefaults(JFileChooser) line: 219
IronFileChooserUI(BasicFileChooserUI).installUI(JComponent) line: 135
IronFileChooserUI(MetalFileChooserUI).installUI(JComponent) line: 139
DirectoryBrowser(JComponent).setUI(ComponentUI) line: 653
DirectoryBrowser(JFileChooser).updateUI() line: 1757
DirectoryBrowser(JFileChooser).setup(FileSystemView) line: 366
DirectoryBrowser(JFileChooser).<init>(File, FileSystemView) line: 332
DirectoryBrowser(JFileChooser).<init>(File) line: 315
DirectoryBrowser.<init>(File, String, String, String) line: 33
PackToIntegratePanel.choosePackPathToIntegrateFile() line: 522
PackToIntegratePanel$1.actionPerformed(ActionEvent) line: 104
JButton(AbstractButton).fireActionPerformed(ActionEvent) line: 1849
AbstractButton$Handler.actionPerformed(ActionEvent) line: 2169
DefaultButtonModel.fireActionPerformed(ActionEvent) line: 420
DefaultButtonModel.setPressed(boolean) line: 258
BasicButtonListener.mouseReleased(MouseEvent) line: 236
JButton(Component).processMouseEvent(MouseEvent) line: 5517
JButton(JComponent).processMouseEvent(MouseEvent) line: 3135
JButton(Component).processEvent(AWTEvent) line: 5282
JButton(Container).processEvent(AWTEvent) line: 1966
JButton(Component).dispatchEventImpl(AWTEvent) line: 3984
JButton(Container).dispatchEventImpl(AWTEvent) line: 2024
JButton(Component).dispatchEvent(AWTEvent) line: 3819
LightweightDispatcher.retargetMouseEvent(Component, int, MouseEvent) line: 4212
LightweightDispatcher.processMouseEvent(MouseEvent) line: 3892
LightweightDispatcher.dispatchEvent(AWTEvent) line: 3822
WorkbenchFrame(Container).dispatchEventImpl(AWTEvent) line: 2010
WorkbenchFrame(Window).dispatchEventImpl(AWTEvent) line: 1791
WorkbenchFrame(Component).dispatchEvent(AWTEvent) line: 3819
EventQueue.dispatchEvent(AWTEvent) line: 463
EventDispatchThread.pumpOneEventForHierarchy(int, Component) line: 242
EventDispatchThread.pumpEventsForHierarchy(int, Conditional, Component) line: 163
EventDispatchThread.pumpEvents(int, Conditional) line: 157
EventDispatchThread.pumpEvents(Conditional) line: 149
EventDispatchThread.run() line: 110
then other thread mentioned above retrieves the icons (cf 2nd stack of this post)
Sorry. Like @kai said, I meant the event dispatch thread (EDT). Make sure you create all your components, including the
JFileChooser, on the EDT like they show in the tutorial. If you don’t, it’ll be a race between some file system and your display.I just noticed: Does it still happen without that
IronFileChooserthing?