-
Bug
-
Resolution: Fixed
-
P3
-
1.2.2, 1.3.0, 1.3.1
-
merlin
-
generic, x86
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generic, linux, windows_nt
Name: skT88420 Date: 10/12/99
If an html page ending in </html><p> is read by
HTMLEditorKit.read() an EmptyStackException is thrown.
The problem can be reproduced by compiling the following test
program:
TestHTMLRead.java:
public class TestHTMLRead extends javax.swing.JFrame
{
// To replicate the EmptyStackException, set the URL to any html page
// which has something (e.g., <p>) after the </html> tag. A real world
// example of pages ending with </hmtl><p> can be found by going to
// www.amazon.com, select Books link, and then select any subject link,
// such as History or Travel.
//
public TestHTMLRead()
{
try {
String url = "file:///javaBugs/EmptyStackException/readme.html";
getContentPane().add(java.awt.BorderLayout.CENTER, new javax.swing.JEditorPane(url));
setSize(600, 400);
} catch (java.io.IOException ex) { ex.printStackTrace(); }
}
public static void main(String[] argv)
{
(new TestHTMLRead()).show();
}
}
The 'readme.html' file used in my test is below. I created it
by simply adding <p> to the end of the 1.3Beta readme.html file
and then deleting the bulk of the page. In doing this I found
a SECOND BUG, which is more serious than the first. I found
that if I deleted anymore than what I did, the HTML tags were
ignored and the result was just unformatted text. PLEASE TEST
THIS SECOND BUG by deleting any line in the readme.html file,
such as the Contents header, and rerun the test program.
readme.html:
<html><head>
<title>HTML page that causes EmptyStackException on HTMLEditorKit.read()</title>
</head>
<body bgcolor="#ffffff">
<center>
<h1>Reading this page causes EmptyStackException using</h1>
<h3>Java<sup><font size=-2>TM</font></sup> 2 SDK, Standard Edition<br>
Version 1.3 Beta</h3>
</center>
<h2>Contents</h2>
<p>
<h2>Bug Reports and Feedback</h2>
<h2>Sun Java Web Pages</h2>
<blockquote>
For additional information, refer to these Sun Microsystems pages on the
World Wide Web:
<dl>
<dt><a href=http://java.sun.com/>http://java.sun.com/</a>
<dd>The Java Software web site, with the latest information on
Java technology, product information, news, and features.
<dt><a href=http://developer.java.sun.com/>http://developer.java.sun.com/</a>
<dd>The Java Developer Connection web site.
<dt><a href=http://java.sun.com/products/>http://java.sun.com/products/</a>
<dd>Java Technology Products & API
<dt><a href=http://www.sun.com/solaris/java/>http://www.sun.com/solaris/java/</a>
<dd>Java 2 SDK for Solaris - Production Release
</dl>
</blockquote>
<p>
<hr>
</body></html><p>
The Trace for the exception:
C:\javaBugs\EmptyStackException>java TestHTMLRead
java.util.EmptyStackException
at java.util.Stack.peek(Unknown Source)
at javax.swing.text.DefaultStyledDocument$ElementBuffer.insertElement(Unknown Source)
at javax.swing.text.DefaultStyledDocument$ElementBuffer.create(Unknown Source)
at javax.swing.text.DefaultStyledDocument.create(Unknown Source)
at javax.swing.text.html.HTMLDocument.create(Unknown Source)
at javax.swing.text.html.HTMLDocument$HTMLReader.flushBuffer(Unknown Source)
at javax.swing.text.html.HTMLDocument$HTMLReader.flush(Unknown Source)
at javax.swing.text.html.HTMLEditorKit.read(Unknown Source)
at javax.swing.JEditorPane.read(Unknown Source)
at javax.swing.JEditorPane$PageLoader.run(Unknown Source)
C:\javaBugs\EmptyStackException>java -version
java version "1.3beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3beta-O)
Java(TM) HotSpot Client VM (build 1.3beta-O, mixed mode)
This problem is not new with JDK 1.3Beta. I first encountered it
with JDK1.2.2 and only tested JDK1.3Beta before submitting a bug
report.
(Review ID: 96461)
======================================================================
Name: rlT66838 Date: 11/19/99
java version "1.2.2"
Classic VM (build JDK-1.2.2-001, green threads, sunwjit)
AND ALSO
java version "1.3beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3beta-O)
Java(TM) HotSpot Client VM (build 1.3beta-O, mixed mode)
AS WELL AS
jdk1.2.2 & HotSpot (latest to date) on WinNT
HTMLEditorKit crashes when the html code it should parse contains the ^@ (char
code 0, I believe) character.
StringReader reader = new StringReader(textToParse);
EditorKit kit = new HTMLEditorKit();
doc = kit.createDefaultDocument();
// The Document class does not yet handle charset's properly.
doc.putProperty("IgnoreCharsetDirective", Boolean.TRUE);
try {
kit.read(reader, doc, 0);
}
catch (BadLocationException e) {}
catch (IOException e) {}
}
greats me with the following stack trace:
Exception in thread "main" java.util.EmptyStackException
at java.util.Stack.peek(Stack.java, Compiled Code)
at
javax.swing.text.DefaultStyledDocument$ElementBuffer.insertElement(DefaultStyled
Document.java, Compiled Code)
at
javax.swing.text.DefaultStyledDocument$ElementBuffer.insertUpdate(DefaultStyledD
ocument.java, Compiled Code)
at
javax.swing.text.DefaultStyledDocument$ElementBuffer.insert(DefaultStyledDocumen
t.java, Compiled Code)
at
javax.swing.text.DefaultStyledDocument.insert(DefaultStyledDocument.java,
Compiled Code)
at javax.swing.text.html.HTMLDocument.insert(HTMLDocument.java, Compiled
Code)
at
javax.swing.text.html.HTMLDocument$HTMLReader.flushBuffer(HTMLDocument.java,
Compiled Code)
at
javax.swing.text.html.HTMLDocument$HTMLReader.flush(HTMLDocument.java, Compiled
Code)
at javax.swing.text.html.HTMLEditorKit.read(HTMLEditorKit.java, Compiled
Code)
(Review ID: 98074)
======================================================================
If an html page ending in </html><p> is read by
HTMLEditorKit.read() an EmptyStackException is thrown.
The problem can be reproduced by compiling the following test
program:
TestHTMLRead.java:
public class TestHTMLRead extends javax.swing.JFrame
{
// To replicate the EmptyStackException, set the URL to any html page
// which has something (e.g., <p>) after the </html> tag. A real world
// example of pages ending with </hmtl><p> can be found by going to
// www.amazon.com, select Books link, and then select any subject link,
// such as History or Travel.
//
public TestHTMLRead()
{
try {
String url = "file:///javaBugs/EmptyStackException/readme.html";
getContentPane().add(java.awt.BorderLayout.CENTER, new javax.swing.JEditorPane(url));
setSize(600, 400);
} catch (java.io.IOException ex) { ex.printStackTrace(); }
}
public static void main(String[] argv)
{
(new TestHTMLRead()).show();
}
}
The 'readme.html' file used in my test is below. I created it
by simply adding <p> to the end of the 1.3Beta readme.html file
and then deleting the bulk of the page. In doing this I found
a SECOND BUG, which is more serious than the first. I found
that if I deleted anymore than what I did, the HTML tags were
ignored and the result was just unformatted text. PLEASE TEST
THIS SECOND BUG by deleting any line in the readme.html file,
such as the Contents header, and rerun the test program.
readme.html:
<html><head>
<title>HTML page that causes EmptyStackException on HTMLEditorKit.read()</title>
</head>
<body bgcolor="#ffffff">
<center>
<h1>Reading this page causes EmptyStackException using</h1>
<h3>Java<sup><font size=-2>TM</font></sup> 2 SDK, Standard Edition<br>
Version 1.3 Beta</h3>
</center>
<h2>Contents</h2>
<p>
<h2>Bug Reports and Feedback</h2>
<h2>Sun Java Web Pages</h2>
<blockquote>
For additional information, refer to these Sun Microsystems pages on the
World Wide Web:
<dl>
<dt><a href=http://java.sun.com/>http://java.sun.com/</a>
<dd>The Java Software web site, with the latest information on
Java technology, product information, news, and features.
<dt><a href=http://developer.java.sun.com/>http://developer.java.sun.com/</a>
<dd>The Java Developer Connection web site.
<dt><a href=http://java.sun.com/products/>http://java.sun.com/products/</a>
<dd>Java Technology Products & API
<dt><a href=http://www.sun.com/solaris/java/>http://www.sun.com/solaris/java/</a>
<dd>Java 2 SDK for Solaris - Production Release
</dl>
</blockquote>
<p>
<hr>
</body></html><p>
The Trace for the exception:
C:\javaBugs\EmptyStackException>java TestHTMLRead
java.util.EmptyStackException
at java.util.Stack.peek(Unknown Source)
at javax.swing.text.DefaultStyledDocument$ElementBuffer.insertElement(Unknown Source)
at javax.swing.text.DefaultStyledDocument$ElementBuffer.create(Unknown Source)
at javax.swing.text.DefaultStyledDocument.create(Unknown Source)
at javax.swing.text.html.HTMLDocument.create(Unknown Source)
at javax.swing.text.html.HTMLDocument$HTMLReader.flushBuffer(Unknown Source)
at javax.swing.text.html.HTMLDocument$HTMLReader.flush(Unknown Source)
at javax.swing.text.html.HTMLEditorKit.read(Unknown Source)
at javax.swing.JEditorPane.read(Unknown Source)
at javax.swing.JEditorPane$PageLoader.run(Unknown Source)
C:\javaBugs\EmptyStackException>java -version
java version "1.3beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3beta-O)
Java(TM) HotSpot Client VM (build 1.3beta-O, mixed mode)
This problem is not new with JDK 1.3Beta. I first encountered it
with JDK1.2.2 and only tested JDK1.3Beta before submitting a bug
report.
(Review ID: 96461)
======================================================================
Name: rlT66838 Date: 11/19/99
java version "1.2.2"
Classic VM (build JDK-1.2.2-001, green threads, sunwjit)
AND ALSO
java version "1.3beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3beta-O)
Java(TM) HotSpot Client VM (build 1.3beta-O, mixed mode)
AS WELL AS
jdk1.2.2 & HotSpot (latest to date) on WinNT
HTMLEditorKit crashes when the html code it should parse contains the ^@ (char
code 0, I believe) character.
StringReader reader = new StringReader(textToParse);
EditorKit kit = new HTMLEditorKit();
doc = kit.createDefaultDocument();
// The Document class does not yet handle charset's properly.
doc.putProperty("IgnoreCharsetDirective", Boolean.TRUE);
try {
kit.read(reader, doc, 0);
}
catch (BadLocationException e) {}
catch (IOException e) {}
}
greats me with the following stack trace:
Exception in thread "main" java.util.EmptyStackException
at java.util.Stack.peek(Stack.java, Compiled Code)
at
javax.swing.text.DefaultStyledDocument$ElementBuffer.insertElement(DefaultStyled
Document.java, Compiled Code)
at
javax.swing.text.DefaultStyledDocument$ElementBuffer.insertUpdate(DefaultStyledD
ocument.java, Compiled Code)
at
javax.swing.text.DefaultStyledDocument$ElementBuffer.insert(DefaultStyledDocumen
t.java, Compiled Code)
at
javax.swing.text.DefaultStyledDocument.insert(DefaultStyledDocument.java,
Compiled Code)
at javax.swing.text.html.HTMLDocument.insert(HTMLDocument.java, Compiled
Code)
at
javax.swing.text.html.HTMLDocument$HTMLReader.flushBuffer(HTMLDocument.java,
Compiled Code)
at
javax.swing.text.html.HTMLDocument$HTMLReader.flush(HTMLDocument.java, Compiled
Code)
at javax.swing.text.html.HTMLEditorKit.read(HTMLEditorKit.java, Compiled
Code)
(Review ID: 98074)
======================================================================
- duplicates
-
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- Closed
-
-
-
- Closed
-