JEditorPane and OutOfMemoryError

Hello,
I'm using a JEditorPane to display a set of html pages. I have two main problems, which a general search tells me is quite common. First of all the CSS isn't recognised, so highlighted text is displayed as plain text. But more importantly, I Get OutOfMemoryErrors for loading relatively small pages - if the file contains only text there is no problem loading it, however if one or more images are embedded in the html more often than not an OutOfMemoryError occurs. The files are each less than 100KBs, but there could be anything form 1 to more than 10 in a single file.
Has anyone found a way to resolve especially the second problem?
Aba-Sah
Exception in thread "Image Fetcher 3" java.lang.OutOfMemoryError: Java heap space
 at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:41)
 at java.awt.image.Raster.createPackedRaster(Raster.java:458)
 at java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:1015)
 at sun.awt.image.ImageRepresentation.createBufferedImage(ImageRepresentation.java:223)
 at sun.awt.image.ImageRepresentation.setPixels(ImageRepresentation.java:475)
 at sun.awt.image.ImageDecoder.setPixels(ImageDecoder.java:120)
 at sun.awt.image.JPEGImageDecoder.sendPixels(JPEGImageDecoder.java:97)
 at sun.awt.image.JPEGImageDecoder.readImage(Native Method)
 at sun.awt.image.JPEGImageDecoder.produceImage(JPEGImageDecoder.java:119)
 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)
Exception in thread "Image Fetcher 1" java.lang.OutOfMemoryError: Java heap space
 at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:41)
 at java.awt.image.Raster.createPackedRaster(Raster.java:458)
 at java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:1015)
 at sun.awt.image.ImageRepresentation.createBufferedImage(ImageRepresentation.java:223)
 at sun.awt.image.ImageRepresentation.setPixels(ImageRepresentation.java:475)
 at sun.awt.image.ImageDecoder.setPixels(ImageDecoder.java:120)
 at sun.awt.image.JPEGImageDecoder.sendPixels(JPEGImageDecoder.java:97)
 at sun.awt.image.JPEGImageDecoder.readImage(Native Method)
 at sun.awt.image.JPEGImageDecoder.produceImage(JPEGImageDecoder.java:119)
 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)
Exception in thread "Image Fetcher 0" java.lang.OutOfMemoryError: Java heap space
 at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:41)
 at java.awt.image.Raster.createPackedRaster(Raster.java:458)
 at java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:1015)
 at sun.awt.image.ImageRepresentation.createBufferedImage(ImageRepresentation.java:223)
 at sun.awt.image.ImageRepresentation.setPixels(ImageRepresentation.java:475)
 at sun.awt.image.ImageDecoder.setPixels(ImageDecoder.java:120)
 at sun.awt.image.JPEGImageDecoder.sendPixels(JPEGImageDecoder.java:97)
 at sun.awt.image.JPEGImageDecoder.readImage(Native Method)
 at sun.awt.image.JPEGImageDecoder.produceImage(JPEGImageDecoder.java:119)
 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)
Exception in thread "Image Fetcher 2" java.lang.OutOfMemoryError: Java heap space
 at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:41)
 at java.awt.image.Raster.createPackedRaster(Raster.java:458)
 at java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:1015)
 at sun.awt.image.ImageRepresentation.createBufferedImage(ImageRepresentation.java:223)
 at sun.awt.image.ImageRepresentation.setPixels(ImageRepresentation.java:475)
 at sun.awt.image.ImageDecoder.setPixels(ImageDecoder.java:120)
 at sun.awt.image.JPEGImageDecoder.sendPixels(JPEGImageDecoder.java:97)
 at sun.awt.image.JPEGImageDecoder.readImage(Native Method)
 at sun.awt.image.JPEGImageDecoder.produceImage(JPEGImageDecoder.java:119)
 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)

thanks, it seems fine with 512M, all the images are able to load without it breaking.

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body>
Simple text
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Italic text
Center text
Color text
image here : <img src="images/Pig.gif" width="121" height="129">
 
</body>
</html>By pressing the Save button I can change the selected text.
I don�t know the way to get and apply the format (size, color �) to only the selected text and display the selected image in real time in the EditorPane. Like if you press the Bold button, the selected text font will be change to bold.
I would like to get or save the HTML code of the content of the EditorPane by pressing the Save button, How to make it?
I can apply the formatting on the selected text in a JTextPane, but I don't know the way to save or export the content in HTML. By doing that it could fix my problem too.
So any help to do that will be much appreciated.
Thanks.

Hi,
Tks for your answer. That one I can do it. I would like to display the selected text in bold instead of adding the tag in the JEditorPane. If I get you right, you get the hole content of the JEditorPane and save it. How did you get it ? And before saving that in the database, did you fing the keysWord to convert the HTML tag in the corresponding entities ?
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import java.awt.*;
import java.awt.event.*;
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import javax.swing.text.Highlighter;
import javax.swing.event.*;
import java.util.*;
import javax.swing.text.*;
import javax.swing.text.BadLocationException;
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Did you have and idea
Tkks

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 super( testName );
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 try {
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 } // try
 finally {
 jfcHelper = null;
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 testInstance = new JEditorPane();
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 frame.getContentPane().add( testInstance , BorderLayout.CENTER );
 frame.setSize( 800 , 600 );
 frame.setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
 frame.setVisible( true );
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 public void doVerify() throws AssertionFailedError {
 assertTrue( 0 < testInstance.getSelectedText().length() );
 }.verify();
}

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Q:
I'm getting my Session with Session.getDefaultInstance and its not getting changes to the Properties passed in. What's wrong?
A:
In getDefaultInstance(Properties props), the Properties are only used in the initial call. Future calls ignore the setting, returning the previously created Session. If you need to change the Properties, like to change SMTP servers, you should use getInstance(Properties props) instead.

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I ran into this problem before when working with Proxied objects.
I am integrating iBatis into my framework and using Dynamic Proxies to allow a developer to pass in a DAO interface and the Dynamic Proxy will retrieve the correct iBatis SQL Map and run it according to the DAO interface method. Some of these DAO methods take parameters that are lists with 100,000s of records. When I run my batch process using Dynamic Proxies, I get OutOfMemoryError in WebLogic. When I remove the Dynamic Proxy and create a simple implementation for my DAO that I use instead of Proxying it, I get no error and my process runs fine.
Any thoughts? Does sending huge amounts of data through a Proxy or doing quite a bit of activity inside a Proxied object cause OutOfMemoryErrors?
Thanks,
-jay blanton

Check you don't have an infinite loop or recursion which is wrapping Proxies in Proxies in Proxies...

JEditorPane and scrollbars

Hi there,
I'm using the JEditorPane to display some simple html and css - in fact all it is a div of a fixed width containing an abitary amount of text. What I want to do is calculate the height of the div in pixels. In a browser this is easy enough, you just use javascript to look up the div's clientHeight property, but for the life of me I can't workout how to do this using the Swing api in the JEditorPane. It must know how high the whole rendered html is as it knows when to add the vertical scroll bar
As an alternative approach i though i could just set the size of the containing JFrame and then check to see if a vertical scroll bar had appeared, if it had then I would know that the height of the text in the div exceeded the hight of the frame, but the
scrollPane.getVerticalScrollBar().isVisible() method always seems to return false...
If anyone has any idea how to do this (or rather, what i'm doing wrong) it would be appreciated.
Thanks
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.UIManager;
public class TextPane extends JFrame {
 private JEditorPane pane;
 private JScrollPane scrollPane;
 public TextPane(){
 pane = new JEditorPane();
 pane.setEditable(true); // Read-only
 try{
 pane.setPage("html-file-that-contains-enough-text-to-cause-the-scroll-bar-to-appear.html");
 catch(IOException e){
 throw new RuntimeException(e);
 scrollPane = new JScrollPane(pane,
 JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
 getContentPane().add(scrollPane);
 public static void main(String[] args) {
 try {
 UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
 } catch (Exception evt) {}
 TextPane f = new TextPane();
 f.addWindowListener(new WindowAdapter() {
 public void windowClosing(WindowEvent evt) {
 System.exit(0);
 f.setSize(400, 300);
 f.setVisible(true);
 if(f.scrollPane.getVerticalScrollBar().isVisible()){
 System.out.println("Scroll Bar is showing");
 else{
 System.out.println("Scroll Bar is not showing");
}

If the editorpane is visible you can use getPreferredSize(). The srollpane also relies on this method to determine when to show scrollbars.
public class DivHeight {
 public static void main(String[] args) throws Exception {
 final JEditorPane pane = new JEditorPane();
 pane.setBorder(null);
 pane.setContentType("text/html");
 pane.setText("<html><div style='margin: 0px; padding: 0px; width: 200px; background-color: #DDDDDD;'>Bla bla bla bla bla saf jölasj dfölasjdf ölasjdf ölasjdfölkasjdf löjkasdf löjasdlöfk jaslökdfklö asjdf öasjdfölk asjdlfkö jaslökdj löaskdjafö lkjasdlöfk jaslökdfj ölaskjsdlköf jaslökfjlökasdjf lköasjdf lköasdjflökjsadflkjdölaksdjf ölkasdjfölk Bla bla bla bla bla saf jölasj dfölasjdf ölasjdf ölasjdfölkasjdf löjkasdf löjasdlöfk jaslökdfklö asjdf öasjdfölk asjdlfkö jaslökdj löaskdjafö lkjasdlöfk jaslökdfj ölaskjsdlköf jaslökfjlökasdjf lköasjdf lköasdjflökjsadflkjdölaksdjf ölkasdjfölk Bla bla bla bla bla saf jölasj dfölasjdf ölasjdf ölasjdfölkasjdf löjkasdf löjasdlöfk jaslökdfklö asjdf öasjdfölk asjdlfkö jaslökdj löaskdjafö lkjasdlöfk jaslökdfj ölaskjsdlköf jaslökfjlökasdjf lköasjdf lköasdjflökjsadflkjdölaksdjf ölkasdjfölk </div></html>");
 JButton button = new JButton("print size");
 button.addActionListener(new ActionListener() {
 public void actionPerformed(ActionEvent e) {
 System.out.println(pane.getPreferredSize());
 JFrame frame = new JFrame();
 frame.getContentPane().add(button, BorderLayout.NORTH);
 frame.getContentPane().add(new JScrollPane(pane), BorderLayout.CENTER);
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 frame.setSize(400, 300);
 frame.setLocationRelativeTo(null);
 frame.setVisible(true);
}

Utilisation of XMLInputStream and OutOfMemoryError (WLS 8.1 SP5)

Hello,
Did somebody use weblogic.xml.stream.XMLInputStream to read/parse a large XML file?
If I understand it well, this class uses SAX to parse the files, so it must be stateless and it must not consume a lot of memory.
However, when I try to read a 15 Mb XML file, using the following code :
XMLInputStream matchingStream = XMLInputStreamFactory.newInstance().newInputStream(pFile);
while (matchingStream.hasNext()) {
XMLEvent event = matchingStream.next();
, memory's being consumed quickly and I get OutOfMemoryError when the java process' memory exceedes 74 Mb.
Can you approve/disapprove my utilisation of this class ?
Thanks in advance

I would normally suggest raising the issue with support, but I recall hearing that 8.1 is nearing the end of its support cycle, so I'm not sure that's an option for you. Other options:
- try upgrading to a newer SP, or better yet, a new version of WebLogic
- try changing to synchronous forwarding
- examine thread dumps from when the bridge appears to be stalled
- post the exception that bridge is throwing when it tries to connect
- try patching MQ (the problem could be on the MQ side, and perhaps an older version of the bridge may not be fully capable of handling all of MQs minor quirks)
- write a program to (A) detect inactivity on the src destination, and (B) somehow restart the bridge and/or all of WL when this occurs
Tom

JEditorPane and JTextarea question

I have loaded a HTML file into JEditorPane.
When I click on a hyperlink in the HTML page, that particular
link should be invoked in the browser(new window). But, if I click
on the hyperlink it opens the page into the JEditorPane itself.
I tried using the hyperlink html anchor tag which includes this attribute:
target="_blank". It should launch in its own window.But, it
does not work. How do I make it work? Please help

I think when the target attribute in the hyperlink is set as target = "_blank" in the html document , then the contents has to be displayed in a new window.
this html document is displayed in the JEditorPane. The html document has the links set as
This text is a link to a google page
The google page is displayed in the JEditorPane itself and not in a new browser window.

JEditorPane and HyperlinkListener Problems

Here's my code:
public class WizardHelpScreen extends JFrame implements HyperlinkListener {
private Image theIcon = new ImageIcon(getClass().getResource("icon.gif")).getImage();
private JEditorPane helpPane;
private JScrollPane helpScrollPane;
public WizardHelpScreen() {
     super("Help Documents");
     setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        setIconImage(theIcon);
        startHelp();
public void startHelp() {
     helpPane = new JEditorPane();
     helpScrollPane = new JScrollPane(helpPane);
     helpPane.setEditable(false);
            helpPane.addHyperlinkListener(this);
            getContentPane().add(helpPane);
           setLocation(230,230);
           setPreferredSize(new Dimension(640,480));
           pack();
        setVisible(true);
            try {
                  helpPane.setPage("file:///c:/japps/HelpTestTwo.html");
         } catch(IOException ex) {
                   JOptionPane.showMessageDialog(null,"Unable to load helpfile.","Error",JOptionPane.ERROR_MESSAGE);
                   helpPane.setText("Error. Unable to load help file. Please reinstall the application or contact support.");
public void hyperlinkUpdate(HyperlinkEvent e) {
        if(e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
             Document doc = helpPane.getDocument();
                try {
                    URL url = e.getURL();
                    helpPane.setPage(url);
                } catch (IOException io) {
                 JOptionPane.showMessageDialog(null, "Can't follow link","Invalid Input",JOptionPane.ERROR_MESSAGE);
                 helpPane.setDocument(doc);
}It opens the html document just fine, and even activates the hyperlink in the first html document. The problem is in the second document that is shown after clicking the link in the first document, the links in the second document don't work anymore. It's like the HyperlinkListener deactivated or something. What am I doing wrong?

Nevermind, there was a typo in my HTML that caused the problem.

JEditorPane and OutOfMemoryError

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