Closed Bug 36728 Opened 24 years ago Closed 24 years ago

Java applet doesn't render with <object> element

Categories

(Core :: Layout, defect, P3)

Product:
Core
Component:
Layout
Platform:
x86
Windows NT
Type:
defect

Tracking

()

Status:
VERIFIED INVALID

People

(Reporter: rcrews, Assigned: rickg)

Details

(Whiteboard: [need update][6/27]) 

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; m15)
BuildID:    2000041805

I use the HTML 4.01 specification to create a test page for my Java applet. The
applet runs and displays perfectly in Navigator 4.72, but only flashes on the
screen, then disappears in Mozilla M14.

Reproducible: Always
Steps to Reproduce:
1. Create a file from the HTML in Additional Information below.
2. Create a directory in the same directory as the HTML file called "Java Classes".
3. Put TrivialApplet.class in "Java Classes".
4. Open the HTML page.


Actual Results:  Hello world applet flashes on the screen momentarily, then
disappears. Blank page.

Expected Results:  Rendered the text "Hello world."

Here's the HTML file I'm using:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
    "http://www.w3.org/TR/html4/strict.dtd">
<html>
  <head>
    <title>Java Programming Homework 1</title>
  </head>
  <body>
    <p><object
      classid="java:TrivialApplet.class"
      codebase="Java Classes"
      codetype="application/java"
      width="200"
      height="200">
    </object></p>
  </body>
</html>

This is my Java applet (TrivialApplet.java):

import java.awt.*;
import java.applet.Applet;

public class TrivialApplet extends Applet {
  public void init() {
    repaint();
  }
  public void paint( Graphics g ) {
    g.drawString( "Hello World!", 30, 30 );
  }
}
java isn't enabled in the nightlies, but i'm not sure what happens to these 
bugs.
The 'codebase' attribute value in the test case is invalid: it should be an URI.
See http://www.w3.org/TR/REC-html40/struct/objects.html#adef-codebase-OBJECT

AFAIK, though, Mozilla doesn't support the 'codebase' attribute yet so that's
probably not causing the problem.
QA needs an update on this bug and whether it still occurs in a brand new M17 
nightly build.  Reporter: please retest in a new nightly and post the results 
here.  If you still see the problem, attaching a testcase displaying the 
problem, rather than just posting the HTML via a comment, would be 
appreciated.  Thanks!
Whiteboard: [need update][6/27]
This works for me with the latest June 20th Mac and Win 32 builds. Object test 

case uses codebase and classid attributes that specify java file.This test case 

is located at the following:



http://mozilla.org/quality/browser/standards/html/object_classid.html


hmm...with 62108 win32, just a gray rectangle is displayed.
Can you render applet test cases ? 

http://slip/projects/marvin/html/applet_code_codebase.html

Or is the problem just with Object as described ?

Chris, any testcases that aren't within the firewall?
Sorry. Our HTML 4.0 Transitional matrix, which is located at mozilla.org,  
contains 13 or so applet test cases.

http://mozilla.org/quality/browser/standards/html/

These test cases contain the element and it's attribute.

This problem is caused by the invalid 'codebase' value - it should be a legal 
URI and may not contain whitespace.

Marking Invalid.

(My previous comment about 'codebase' not being supported was a bit misleaded.  
The attribute does work for 'classid', but not for 'data' - I've filed a bug 
about that.)
Status: UNCONFIRMED → RESOLVED
Closed: 24 years ago
Resolution: --- → INVALID
massive update for QA contact.
QA Contact: petersen → lorca
Sounds good to me.  Marking VERIFIED.
Status: RESOLVED → VERIFIED
SPAM. HTML Element component deprecated, changing component to Layout. See bug
88132 for details.
Component: HTML Element → Layout
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