Java Applets and html page - embedding multiple applets

Question

I have just started to write applets and so have never embedded in a webpage before. I have 2 applets that on there own run fine however when I try to run the 2 applets in the same page only one is visible. This seems very strange I have tried using the opening and closing foo bar tags for each applet.

These applets have no connection to each other however I also found that the html tags were also ignored after the applet which threw the page design out as well, this has totally baffled me.

The code encasing the applets is

<div class="wholeframe">
   <div class="lframe3">
       <!-- content for left frame to go here -->
       <h2>Basic Java Swing Applet</h2>
       <br />
       <applet code="org.my.form1.MyApplet" archive="java/form1gui/FormApplet1.jar"
               height="60" width="250"/> 
    </div>
    <div class="rframe">
       <h2>Basic Java Swing Applet</h2>

       <applet code="org.me.hello.MyApplet" archive="java/hello/HelloApplet.jar"
               width="350" height="150" /> 

      <!-- right frame div end -->
</div> <!-- whole frame to box 2 frames -->

I would be grateful if someone could advise where I have gone wrong as this should be simple to do and I am sure it is but I cannot seem to work out the issue.

It might be that your browser does not like the self-closing form of the applet element, if this is not an XHTML page (e.g. it sees the second applet inside the first one). Or your applets are doing something wrong that one blocks the other. — Paŭlo Ebermann
– Paŭlo Ebermann, Commented Jul 30, 2011 at 13:15

Andrew Thompson · Accepted Answer · 2011-07-29 07:28:02Z

2

The first thing I'd recommend is validating that 'HTML' with the W3C mark-up validation service. The reason I put the HTML in commas is because whatever that mess is pretending to be, it is not (valid) HTML.

(grumbles) Programmers tend to think that whatever rubbish they put in HTML should work. The real world is somewhat removed from this fantasy land.

Other recommendations:

Post a link to the applet, broken or otherwise. If we are feeling motivated, we can visit it, look at the (entire) HTML, download the Jars or classes, and test solutions.
Ensure the Java Console is opened automatically when loading applets. Without the console information, you are debugging this with 'one arm tied behind your back'.
While debugging, reduce the web page to the minimum. No headers, divs, code, CSS etc. Include that stuff once it is working.

answered Jul 29, 2011 at 7:28

Andrew Thompson

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nidhin · Accepted Answer · 2011-07-29 04:27:21Z

0

To embed more than one applet in a single web page, put each applet in its own subfolder within the folder that contains the HTML document. Use the APPLET tag's CODEBASE attribute to specify the folder that contains the applet.

For example, to embed the applets 'Aplt1' and 'Aplt2' in the web page defined by the file TestAplt.html, you can set up the following files and subfolders in a folder named Test:

 Test/TestAplt.html
 Test/Aplt1/<Class files for Aplt1> 
 Test/Aplt2/<Class files for Aplt2>

For files in this structure, put the following APPLET tags in the file TestAplt.html:

<applet codebase="Aplt1/" code=Aplt1 width=16 height=400 align="left">
<param name=ParamAplt1 value="Aplt1.djr">
</applet>
<applet codebase="Aplt2/" code=Aplt2 width=32 height=400 align="right">
<param name=ParamAplt2 value="Aplt2.djr">
</applet>

Please use this link Multiple applets in a page

answered Jul 29, 2011 at 4:27

nidhin

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3 Comments

Andrew Thompson Over a year ago

-1 This is completely wrong. It is possible to load 2 applets from 1 package in one jar into 1 web page.

Andrew Thompson Over a year ago

I'll 'share' more once the OP posts more info. For the moment, see my answer.

Dave Over a year ago

Thanks for the information, I have the following which seems to work fine.<applet code=”className.class” codebase=”path/to/javaclass” width=”w” height=”h”>[java applet]</applet>

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