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  1. JDK
  2. JDK-4138781

HTMLEditorKit.read() throws EmptyStackException

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: 1.0.2
    • Fix Version/s: 1.2.0
    • Component/s: client-libs
    • Labels:
    • Subcomponent:
    • Resolved In Build:
      1.2beta4
    • CPU:
      sparc
    • OS:
      solaris_2.5.1
    • Verification:
      Not verified

      Description

      If Document.remove() is called before calling HTMLEditorKit.read(), an
      EmptyStackException is thrown.

      Platform: Solaris 2.5.1, JDK 1.1.6, Swing 1.0.2

      The stack trace is:

      Exception occurred during event dispatching:
      java.util.EmptyStackException
      at java.util.Stack.peek(Stack.java)
      at com.sun.java.swing.text.DefaultStyledDocument$ElementBuffer.insertElement(DefaultStyledDocument.java:1096)
      at com.sun.java.swing.text.DefaultStyledDocument$ElementBuffer.insertUpdate(DefaultStyledDocument.java:879)
      at com.sun.java.swing.text.DefaultStyledDocument$ElementBuffer.insert(DefaultStyledDocument.java:826)
      at com.sun.java.swing.text.DefaultStyledDocument.insert(DefaultStyledDocument.java:141)
      at com.sun.java.swing.text.html.HTMLDocument.insert(HTMLDocument.java:96)
      at com.sun.java.swing.text.html.HTMLDocument$HTMLReader.flush(HTMLDocument.java:172)
      at com.sun.java.swing.text.html.HTMLEditorKit.read(HTMLEditorKit.java:123)
      at com.sun.java.swing.text.DefaultEditorKit.read(DefaultEditorKit.java:122)
      at EditorPaneTest.actionPerformed(EditorPaneTest.java:57)
      at com.sun.java.swing.AbstractButton.fireActionPerformed(AbstractButton.java:861)
      at com.sun.java.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:896)
      at com.sun.java.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:338)
      at com.sun.java.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:230)
      at com.sun.java.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:159)
      at java.awt.Component.processMouseEvent(Component.java:2404)
      at java.awt.Component.processEvent(Component.java:2249)
      at java.awt.Container.processEvent(Container.java:878)
      at java.awt.Component.dispatchEventImpl(Component.java:1781)
      at java.awt.Container.dispatchEventImpl(Container.java:923)
      at java.awt.Component.dispatchEvent(Component.java:1708)
      at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:1559)
      at java.awt.LightweightDispatcher.processMouseEvent(Container.java:1463)
      at java.awt.LightweightDispatcher.dispatchEvent(Container.java:1395)
      at java.awt.Container.dispatchEventImpl(Container.java:910)
      at java.awt.Window.dispatchEventImpl(Window.java:492)
      at java.awt.Component.dispatchEvent(Component.java:1708)
      at java.awt.EventDispatchThread.run(EventDispatchThread.java:81)



      Reproduce by compiling and running the following sample program:

      /*
       * This sample program demonstrates a problem in the HTMLEditorKit.
       * If a Document's contents are removed and then a subsequent call
       * to the read method of HTMLEditorKit is made, an EmptyStackException
       * is thrown.
       *
       * To Reproduce:
       *
       * - Compile and run the following program.
       * - A web page will be displayed (you'll need to resize it to see it all)
       * - Then click on the "Load New Document" button to try to read in a new
       * web page. This will fail with an EmptyStackException.
       */

      import java.io.*;
      import java.net.*;
      import java.awt.*;
      import java.awt.event.*;
      import com.sun.java.swing.*;
      import com.sun.java.swing.text.*;
      import com.sun.java.swing.text.html.*;
      import com.sun.java.swing.event.*;

      public class EditorPaneTest extends JFrame implements ActionListener,
      DocumentListener {

          JEditorPane editor;
          Document doc;

          public EditorPaneTest() {
      JButton button;

      try {
      editor = new JEditorPane("http://icdev.eng/~cecilia/cecilia.html");
      doc = editor.getDocument();
      doc.addDocumentListener(this);

      button = new JButton("Load New Document");
      button.addActionListener(this);

      getContentPane().add(BorderLayout.CENTER, editor);
      getContentPane().add(BorderLayout.SOUTH, button);
      } catch (IOException e) {
      }
          }

          public void actionPerformed(ActionEvent e) {
      InputStream in = null;
      HTMLEditorKit kit = new HTMLEditorKit();

      // Read in new document
      try {
      doc.removeDocumentListener(this);
      doc.remove(0, doc.getLength());
      URL url = new URL("http://icdev.eng/~cecilia/wonderland.html");
      in = url.openStream();
      kit.read(in, doc, 0);
      } catch (MalformedURLException err) {
      } catch (IOException err) {
         } catch (BadLocationException err) {
      } finally {
      doc.addDocumentListener(this);
      try {
      if (in != null) in.close();
      } catch (IOException err) {
      }
      }
          }

          public void changedUpdate(DocumentEvent e) {
              System.out.println("HtmlEditor: changedUpdate called");
          }
       
          public void insertUpdate(DocumentEvent e) {
              System.out.println("HtmlEditor: insertUpdate called");
          }
       
          public void removeUpdate(DocumentEvent e) {
              System.out.println("HtmlEditor: removeUpdate called");
          }

          public static void main(String[] argv) {
      EditorPaneTest ept = new EditorPaneTest();
      ept.pack();
      ept.show();
          }
      }

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            Assignee:
            smanisunw Sunita Mani (Inactive)
            Reporter:
            duke J. Duke (Inactive)
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              Dates

              Created:
              Updated:
              Resolved:
              Imported:
              Indexed: