How do I call an object written in Plugin from Javascript in Acrobat 9.0?

Hi,
Since Acrobat 9.0 has no longer support GetNumAVDocs() called in Javascript, it does not return number counter of opened pdf documents.
I am looking for a way to write method GetNumAVDocs() or similar one in Plug-in. My questions are that
1. Can we write the method GetNumAVDocs() or similar in Plug-in?
2. Can we integrate that method GetNumAVDocs() which written in Plug-in in Javascript or Can Javascript call that method GetNumAVDocs()?
Any of your comments or advices are very helpful to me.
Thanks a lot for your support,
Thai Nguyen

Hi lrosenth,
Thank you for help so far. In fact we our codes have been using COM/ActiveX and AcroExch.App library along. These codes are working find with Acrobat 8.0, but they do not work with Acrobat 9.0 since the function GetNumAVDocs() is no longer working. It always returns 0, instead of maximum number of documents.
I would like to attach the code along with PDF documents for you to take a look and help us. This zip file is test1.zip. This zip file include a html file test1.html. This file includes HTML page and a number of Javascript/Activex functions.
The function getActiveDoc() is the target of the issue. It contains an AcroExch.App function GetNumAVDocs() which does not return a number of the maximum number of documents the Acrobat application can open on Acrobat 9.0. It always returns 0 regardless how many how many documents are opened.
At the bottom of the source code is html page that called the function getActiveDoc() at the <input> tag. <input type="button" value="Show Active Docs" onclick="getActiveDoc();">
For testing this code, you unzip test1.zip file. Open test1.html on a web browser. It will load couple pdf files that include on test1.zip. Click on button "Show Active Docs" that calls function getActiveDoc(). This function trigger GetNumAVDocs(). It then call alert(numdoc) to display a value of number of opened documents.
Thank you,
Thai Nguyen
-------------------------------The Codes below-------------------------------------
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Test for Adobe 8&9</title>
</head>
<script type="text/javascript">
function nextPage(){
var acrobatpdf= document.getElementById("acrobatpdf");
acrobatpdf.GotoNextPage();
function prevPage(){
var acrobatpdf= document.getElementById("acrobatpdf");
acrobatpdf.GotoPreviousPage();
function showToolbar(){
var acrobatpdf= document.getElementById("acrobatpdf");
acrobatpdf.setShowToolbar(1);
function hideToolbar(){
var acrobatpdf= document.getElementById("acrobatpdf");
acrobatpdf.setShowToolbar(0);
function loadfile(){
var file = document.getElementById("file").value;
alert(file);
var acrobatpdf= document.getElementById("acrobatpdf");
var rtn = acrobatpdf.LoadFile(file);
alert(rtn);
function getActiveDoc(){
var acrobatapp= document.getElementById("acrobatapp");
var numdoc = acrobatapp.GetNumAVDocs();
alert(numdoc);
for(i=0;i < numdoc;i++){
actDoc = acrobatapp.getIEPDFDoc();
var actDoc = acrobatapp.GetAVDoc(i);
alert("item:"+i);
if(actDoc!=null){
          var title = actDoc.GetTitle();
    alert(title);
}else{
   alert("Null object");
function findText(){
var file = "D:\\lab\\adobe\\test1\\fcom012360.pdf";
var text = document.getElementById("findtext").value;
var acrobatapp= new ActiveXObject("AcroExch.App");
var avdoc= new ActiveXObject("AcroExch.AVDoc");
var acrobatpdf= document.getElementById("acrobatpdf");
var x = acrobatpdf.LoadFile(file);
alert(x);
</script>
<body>
<div>
<input type="button" value="Next Page" onclick="nextPage();">
<input type="button" value="Prev Page" onclick="prevPage();">
<input type="text" id="file" width="80">
<input type="button" value="Load File" onclick="loadfile();">
<input type="button" value="Show toolbar" onclick="showToolbar();">
<input type="button" value="Hide toolbar" onclick="hideToolbar();">
</div>
<div>
<input type="button" value="Show Active Docs" onclick="getActiveDoc();">
<input type="text" id="findtext" width="80">
<input type="button" value="Find Text" onclick="findText();">
</div>
<div>
    <OBJECT id="acrobatapp"
            classid="clsid:85DE1C45-2C66-101B-B02E-04021C009402">
    </OBJECT>
    <OBJECT id="avdoc"
            classid="clsid:72498821-3203-101B-B02E-04021C009402">
    </OBJECT>
    <OBJECT classid="clsid:CA8A9780-280D-11CF-A24D-444553540000"
            width="960" height="492" id="acrobatpdf"
            style="WIDTH: 784px; HEIGHT: 492px">
     <PARAM NAME="_cx" VALUE="26035">
        <PARAM NAME="_cy" VALUE="15663">
        <Param name="SRC" value="fcom012330.pdf">
    </OBJECT>
</div>
</body>
</html>

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at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.ensureOpen(DeployURLClassPath.java:690)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.<init>(DeployURLClassPath.java:652)
at com.sun.deploy.security.DeployURLClassPath$3.run(DeployURLClassPath.java:400)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.security.DeployURLClassPath.getLoader(DeployURLClassPath.java:389)
at com.sun.deploy.security.DeployURLClassPath.getLoader(DeployURLClassPath.java:366)
at com.sun.deploy.security.DeployURLClassPath.getResource(DeployURLClassPath.java:230)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Plugin2ClassLoader.java:966)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Plugin2ClassLoader.java:955)
at sun.plugin2.applet.Applet2ClassLoader.findClass(Applet2ClassLoader.java:134)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Plugin2ClassLoader.java:250)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:180)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Plugin2ClassLoader.java:240)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:180)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:161)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Plugin2ClassLoader.java:675)
at sun.plugin2.applet.Plugin2Manager.createApplet(Plugin2Manager.java:3046)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Plugin2Manager.java:1498)
at java.lang.Thread.run(Thread.java:680)
Exception: java.lang.NullPointerException

Try posting at the Web Development / Standards Evangelism forum at MozillaZine. The helpers over there are more knowledgeable about web page development issues with Firefox. <br />
http://forums.mozillazine.org/viewforum.php?f=25 <br />
You'll need to register and login to be able to post in that forum.

How do I call methods with the same name from different classes

I have a user class which needs to make calls to methods with the same name but to ojects of a different type.
My User class will create an object of type MyDAO or of type RemoteDAO.
The RemoteDAO class is simply a wrapper class around a MyDAO object type to allow a MyDAO object to be accessed remotely. Note the interface MyInterface which MyDAO must implement cannot throw RemoteExceptions.
Problem is I have ended up with 2 identical User classes which only differ in the type of object they make calls to, method names and functionality are identical.
Is there any way I can get around this problem?
Thanks ... J
My classes are defined as followes
interface MyInterface{
     //Does not and CANNOT declare to throw any exceptions
    public String sayHello();
class MyDAO implements MyInterface{
   public String sayHello(){
          return ("Hello from DAO");
interface RemoteDAO extends java.rmi.Remote{
     public String sayHello() throws java.rmi.RemoteException;
class RemoteDAOImpl extends UnicastRemoteObject implements RemoteDAO{
     MyDAO dao = new MyDAO();
    public String sayHello() throws java.rmi.RemoteException{
          return dao.sayHello();
class User{
   //MyDAO dao = new MyDAO();
   //OR
   RemoteDAO dao = new RemoteDAO();
   public void callDAO(){
          try{
          System.out.println( dao.sayHello() );
          catch( Exception e ){
}

>
That's only a good idea if the semantics of sayHello
as defined in MyInterface suggest that a
RemoteException could occur. If not, then you're
designing the interface to suit the way the
implementing classes will be written, which smells.
:-)But in practice you can't make a call which can be handled either remotely or locally without, at some point, dealing with the RemoteException.
Therefore either RemoteException must be part of the interface or (an this is probably more satisfactory) you don't use the remote interface directly, but MyInterface is implemented by a wrapper class which deals with the exception.

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