Scripting applet in netscape

I have Netscape 4.75 and I want to access methods of applet
which is compiled with jdk 1.4 and is using swing classes?
How is that possible?
I have installed java plug-in 1.4 but then the applet is not
scriptable with plug-in.

Try to add the parameter MAYSCRIPT="true" to the applet tag and convert your HTML file with the htmlconverter program that comes with the jdk. If that still doesn't work, upgrade to NN7.02 -- I know it works..... you can check it out at the link shown below:
http://www.aokabc.com
;o)
V.V.

Similar Messages

Applet in Netscape

My applet code is loading in Internet Explorer,But I have problem in loading the code in Netscape.Can any one suggest me how to load the applets in Netscape.
--shiva

I am using IE 5.5 and Netscape 4.7.Plug in i am using is 1.3.I am sending the html file too.Thanks for replying.
--shiva
<HTML>
<HEAD>
<TITLE>Drawing Pad applet</TITLE>
</HEAD>
<body>
<table border=1 width=405 height=505 >
<tr valign=top>
<td>
<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
               width="400" height="400" align="baseline"
               codebase="http://<%=javaPluginServerPath%>/j2re1_3_0-win.exe#Version=2.4.1.0">
                    <PARAM NAME="code" VALUE="DServer.class">
                    <PARAM NAME="type" VALUE="application/x-java-applet;version=1.3">
                    <PARAM NAME="cache_option" VALUE="Plugin">
                    <PARAM NAME="scriptable" VALUE="true">
                    <PARAM NAME="MAYSCRIPT" VALUE="true">
</OBJECT>
</td>
</tr>
</table>
</body>
</HTML>

Applets and Netscape 6!

Hi there,
I am not sure if this is the right forum to post my question. However, i saw some discussions reg. Applets on Netscape 6 and i guess that many of you might be familiar with the scenario.
I'm having trouble getting any applets to work on Netscape 6 when I have HTTP authentication on the webserver enabled. The applet works fine under normal circumstances.
Instead of loading the applet, I get a Java dialog box saying "Enter Network Password" and asks me to enter my username/password. This is a specific Java dialog box, complete with a picture of Duke, and it
gives my firewall, digest and realm information.
However, the dialog box doesn't accept my username/password, and doesn't
display my applet.
Here is what i captured on the Java console:
======= Default Browser Messages =========
Java(TM) Plug-in: Version 1.3.0_01
Using JRE version 1.3.0_01 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\hsivapatham
Proxy Configuration: Browser Proxy Configuration
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
q: hide console
s: dump system properties
t: dump thread list
x: clear classloader cache
0-5: set trace level to <n>
Trace level set to 5: basic, net, security, ext, liveconnect ... completed.
Registered modality listener
Referencing classloader: sun.plugin.ClassLoaderInfo@5256fa, refcount=1
=========== Loading the Applet... ==========
Added trace listener: sun.plugin.navig.win32.AppletPluginPanel[SpeedDial,0,0,300x295,invalid,layout=java.awt.BorderLayout]
Sending events to applet. LOAD
Determine if the applet requests to install any HTML page
Sending events to applet. INIT
Sending events to applet. START
HTML Installation finished.
===== Not sure what this means? =========
Determine if the applet requests to install any JAR
Jar cache option: null
Jar archive(s): null
Jar cache version(s): null
Applet Installation finished.
====================================
Opening http://10.1.1.126:90/SpeedDialApplet.jar
Connecting http://10.1.1.126:90/SpeedDialApplet.jar with no proxy
======= Puts up a dialog box asking for username and password ==========
Firewall authentication: site=VAANI/10.1.1.126:90, protocol=http, prompt=xpressa, scheme=basic
Modality pushed
Modality popped
User selected: 0
Opening http://10.1.1.126:90/SpeedDial.class
Connecting http://10.1.1.126:90/SpeedDial.class with no proxy
java.lang.NullPointerException
     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
     at sun.plugin.protocol.jdk12.http.HttpURLConnection.getInputStream(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(Unknown Source)
     at sun.plugin.protocol.jdk12.http.HttpURLConnection.checkCookieHeader(Unknown Source)
     at sun.plugin.protocol.jdk12.http.HttpURLConnection.getInputStream(Unknown Source)
     at java.net.HttpURLConnection.getResponseCode(Unknown Source)
     at sun.applet.AppletClassLoader.getBytes(Unknown Source)
     at sun.applet.AppletClassLoader.access$100(Unknown Source)
     at sun.applet.AppletClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.applet.AppletClassLoader.findClass(Unknown Source)
     at sun.plugin.security.PluginClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadCode(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
</code>
Thanks for your help.
Priya

oops, i forgot to add this, can u tell me what speeddial.class is trying to do?
i belive u r making a url connection in that class and u got a null exception.
if u r indeed making a urlconnection, be sure to include the basic authentication in the headers. here is a sample
String basicAuth = Base64Coder.base64Encode("username:password");
basicAuth = "Basic " + basicAuth;
java.net.URL url = new java.net.URL(strUrl);
java.net.HttpURLConnection con = (java.net.HttpURLConnection) url.openConnection();
con.setRequestProperty("Authorization", basicAuth);

Applet in Netscape question.

Hi, Applet in Netscape question.
When an applet is run by Explorer everything is OK when trying to run with Netscape (7.1) nothing happening
What is wrong here ???
<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
WIDTH = "730" HEIGHT = "260"
codebase="http://java.sun.com/products/plugin/autodl/jinstall-1_4-
windows-i586.cab#Version=1,3,0,0">
<PARAM NAME = CODE VALUE = "Xaaa.class" MAYSCRIPT>
<PARAM NAME = ARCHIVE VALUE = "Ybbb.jar">
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.4">
<PARAM NAME="scriptable" VALUE="false">
<PARAM name="progressbar" value="true">
</OBJECT>
Thank you in advance !

Dear Experts.
Reading through previous Forum similar questions, I changed the code (down below)
Now I receive the message:
Click here to get the plugin
This is encouraging because before Netscape ignored the applet completely ...
However I already have plugin version 1.4.2_03 installed (and recognized by Explorer)
The question is still why the applet is not working with Netscape ?
Thank you in advance for your help?
<html>
<body>

<object
classid =" clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
codebase =" http://java.sun.com/products/plugin/autodl/jinstall-1_4-windows-i586.cab#Version=1,4,0,0"
width = 730 height = 260 >
<param name = CODE value ="Xaaa.class" >
<param name = ARCHIVE value ="Ybbb.jar" >
<param name =" type" value =" application/x-java-applet;jpi-version=1.4">
<param name =" scriptable" value =" false">
<param name="progressbar" value="true">
<comment> </comment>
<embed
type =" application/x-java-applet;version=1.4"
code =" Xaaa.class"
archive ="Ybbb.jar"
width = 730
height =260
scriptable = false
pluginspage =" http://java.sun.com/products/plugin/index.html#download">
<noembed> alt="Your browser understands the <APPLET>
tag but isn't running the applet, for some reason."
Your browser is completely ignoring the <APPLET>
tag! </noembed> </embed> </object>

</html>
</body>

Java Applet crashes Netscape upon Exit?

Hello, I created an Applet that I am opening in NEtscape. When I make an attempt to exit (i.e. destroy) the APplet, it crashes the whole netscape. It even happens within Netscape 7. Is there a way around this since it makes a big problem for me to use the applet if it is going to crash my Netscape browser. I`ll appreciate any suggestions or comments, thanks Ivan

The main class that everything is in is called GUI.java and it is a frame. In order to open this as an Applet in netscape, I created a GUI_RMIApplet.java file. And The GUI_RMIApplet.html file opens the GUI_RMIApplet.java file which in return opens GUI.java. The exit call is in GUI.java file.
The html file code is as follows:
<EMBED type="application/x-java-applet;version=1.3" CODE = "musr.client.gui.GUI
_RMIApplet.class" CODEBASE = "." ARCHIVE = "jar/musr.jar" NAME = "MUSR GUI APPLE
T" WIDTH = 400 HEIGHT = 300 ALIGN = middle VSPACE = 0 HSPACE = 0 UBBoption = "de
velop" scriptable=false pluginspage="http://java.sun.com/products/plugin/1.3/pl
ugin-install.html">
<NOEMBED>
The GUI_RMIApplet.java code is:
package musr.client.gui;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import java.rmi.Naming;
import java.rmi.RemoteException;
import musr.server.*;
public class GUI_RMIApplet extends Applet {
boolean isStandalone = false;
String message = "The application will launch in a separate window";
GUI_RMIServer obj = null;
/**Get a parameter value*/
public String getParameter(String key, String def) {
return isStandalone ? System.getProperty(key, def) :
(getParameter(key) != null ? getParameter(key) : def);
/**Construct the applet*/
public GUI_RMIApplet() {
/**Initialize the applet*/
public void init() {
try {
jbInit();
} catch (Exception e) {
System.out.println("GUI_RMI exception: " + e.getMessage());
e.printStackTrace();
/**Component initialization*/
private void jbInit() {
// Main bulk for this applet
GUI gui = new GUI();
gui.setVisible(true);
public void paint(Graphics g) {
g.drawString(message, 25, 50);
/**Get Applet information*/
public String getAppletInfo() {
return "Applet Information";
/**Get parameter info*/
public String[][] getParameterInfo() {
return null;
//static initializer for setting look & feel
static {
try {
//UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
catch(Exception e) {
And, the GUI.java class calls these funcitons when exit menu button is selected:
GUI.this.dispose(); // disposes the frame
System.exit(-1); // disposes the applet (?or not?)
I think the System.exit button is messing things up but I don't know what other function I can use to close teh applet.
Hope this is enough information.

Persistent applets in Netscape 7.x

When I run my applet in Netscape 4.x,navigating to a different page cause my applet to get a stop() call, then pressing the "Back" button the applet gets a start() and I can resume the work. All the sockets are still open. Using the same applet in Netscape 7.x, I get a destroy() call and all the sockets are shutdown. This makes it impossible for me to resume my session when pressing the "Back" button.
Is there a way to instruct the browser not to destroy the applet when the page is not visible?

Is destroy overrideable? If so, just return from it.It's too late. I just get some exceptions and my sockets are closed. I need to avoid calling destroy() at the first place.

Generally, is it better to have one LONG script/applet or break up the functions?

Let's say I'm doing processing for 5 things that are semi-related, or the same process but for many interfaces. Should I have one script/applet that does it all or make five scripts/applets?
Does Cisco EEM work better with multiples short sessions or one longer session?
Thanks,
Tim

EEM was designed to provide short-running automations. The default max runtime for all policies is 20 seconds. However, this runtime can be extended to huge values. It really depends on the specific use case as to whether it's better to do all the work in one policy, or break things up into multiple policies and chain them together. If the policy will be doing the same thing, but on a large-ish dataset (like interfaces) it would be better to do it all in one policy versus trying to duplicate the logic in multiple policies.

Reloading an applet closes Netscape 7.0 browser

I'm loading an applet that loads an image web cam with JMF api. Everything works o.k. But after using the applet, if i go to another html page, loads it but the Netscape browser closes. I've looked at the Netscape java console and it gives me all these errors. Could anybody help me please, it's very urgent?
I don't know how to solve this problem. Here's the code of my applet.
import java.applet.*;
import java.awt.*;
import java.net.*;
import javax.media.*;
import java.awt.event.*;
import javax.swing.*;
public class AppletSound extends JApplet {
     MediaLocator mySound=null;
     Player soundPlayer=null;
Component auControlComponent = null;
     String audio=null;
     public void init()
          audio=getParameter("audio");
          getContentPane().setLayout(null);
          setSize(300,50);
     // Check that we have a valid URL and create URL object to hold it.
          if(audio.equals(""))
               System.out.println("*Please specify one URL to play*");
          else
               mySound=new MediaLocator(audio);
try {
          soundPlayer=Manager.createRealizedPlayer(mySound);
          catch(javax.media.CannotRealizeException cre){}
          catch(javax.media.NoPlayerException npe){}
          catch (java.io.IOException e) {
System.out.println("IOException...exiting.");
//System.exit(1);
if (soundPlayer == null) {
System.out.println("soundPlayer is null...exiting.");
// System.exit(1);
          auControlComponent=soundPlayer.getControlPanelComponent();
          if (auControlComponent!=null)
          getContentPane().add(auControlComponent);
          auControlComponent.setBounds(5,5,295,40);
validate();
     public void start()
          if(soundPlayer!=null)
          soundPlayer.start();
public void stop()
soundPlayer.stop();
     soundPlayer.deallocate();
Here are the errors that I get from the Java Console:
java.lang.NullPointerException
     at com.sun.media.rtp.RTCPTransmitter.makereports(RTCPTransmitter.java:225)
     at com.sun.media.rtp.RTCPTransmitter.report(RTCPTransmitter.java:129)
     at com.sun.media.rtp.RTCPReporter.run(RTCPReporter.java:215)
     at java.lang.Thread.run(Unknown Source)
java.lang.ArrayIndexOutOfBoundsException: 0 >= 0
     at java.util.Vector.elementAt(Unknown Source)
     at com.sun.media.rtp.RTPEventHandler.dispatchEvents(RTPEventHandler.java:114)
     at com.sun.media.rtp.RTPEventHandler.run(RTPEventHandler.java:137)
java.lang.InterruptedException
     at java.lang.Object.wait(Native Method)
     at java.lang.Object.wait(Unknown Source)
     at com.sun.media.rtp.SSRCCacheCleaner.run(SSRCCacheCleaner.java:157)
     at java.lang.Thread.run(Unknown Source)
Timer: timeLoop() wait interrupted java.lang.InterruptedException
Timer: timeLoop() wait interrupted java.lang.InterruptedException
MediaNode event thread java.lang.InterruptedException
MediaNode event thread java.lang.InterruptedException
MediaNode event thread java.lang.InterruptedException

It's me again altairforodigital, as you can see in the source code of the applet I load sound not a web image. Sorry for that.

Applet On Netscape and IE

We are building a shopping cart applet using jdk1.0.x
When the user clicks on a submit button applet makes a connection to the server and waits for the server response. This piece of code makes a status message visible while the applet is waiting for server response.
public boolean mouseDown(Event event,int x, int y)
if (y >= 235 && y <= 260 && x >= 433 && x<= 511 )
lMessage.setVisible(true);
parent.SubmitInfo();
parent.Confirmation(); // make next page visible
return true;
The message is visible in Netscape , but in IE (both in MAC and Windows) it does not show up.
Does anyone have any ideas ?
Thanks in advance
Syama.

Hi, Guess I should have given code sample. lMessage is a label and it is added to the panel.
It does not display on IE but it displays on Netscape.
public class Review extends Panel
// members
public Review(ECommerce _parent)
// add size other components
     add(lMessage);
     lMessage.reshape(10,240,300,20);
     lMessage.setFont(parent.mFB);
     lMessage.setBackground(parent.bC);
     lMessage.setForeground(parent.mtC);
     lMessage.setVisible(true);
// other methods none of them refer lMessage
public boolean mouseDown(Event event,int x, int y)
     if (parent.submitOrder) return true;
     if (y >= 235 && y <= 260 && x >= 433 && x<= 511 )
          parent.submitOrder = true;
                         lMessage.setVisible(true);
     lMessage.requestFocus();
     repaint();
     parent.SubmitInfo();
     parent.Confirmation();
     parent.submitOrder = false;
     return true;
May be it has something to do with jdk - we are using jdk 1.1.
Thanks,
Syama.

Creating signed Java applet for Netscape 4x

I have created a signed jar with SuperUser privileges under Netscape.
public void init() {
try {
if( Class.forName("netscape.security.PrivilegeManager") != null ) {
netscape.security.PrivilegeManager.enablePrivilege("SuperUser");
} catch( ClassNotFoundException cnfe ) {
cnfe.printStackTrace();
With this I am getting following error without any dailog prompting to grant permission.
netscape.security.ForbiddenTargetException: User didn't grant the SuperUser privilege.
Please help.
Thanks
Satish

Then it's likely Netscape 4.x doesn't recognize the jar as being signed. How did you sign the jar?
Why didn't you ask this in the more appropriate Signed Applets forum?

Java Applets in Netscape with EMBED tag

Hi,
I tried to run the examples on the:
http://192.9.48.9/products/plugin/1.3/demos/applets.html
Demo paged off of the plug page and in Netscape 4.08 it
does not know there is a plugin , in Netscape 6.0
it knows there is a plug in but won't use the one installed on the machine (1.3.1) which is the same level as the demo.
Any clues how to get applets to use the Java Plugin with Netscape? This works fine in IE
Thanks!
BTW- I'm using NT 4.0 os.

Probably 1.3.1 conflicts with 1.3.1_01 or 1.3.1_02.
You need the HTML Converter from the Java PlugIn download page to make your page ready for Netscape 4.x. Go to http://java.sun.com/products/plugin/1.3/converter.html (Java Plug-in HTML Converter Download) to download your copy of the HTML Converter. Watch for the current version, it is 1.3, not 1.1.1.
Download your page, strip out the <embed/> and <object/> elements, uncomment the <applet/> element and run the HTML Converter.
Additional Information:
Netscape 6 does not use the <embed/> element anymore since it isn't a html element but was a proprietary netscape tag. Netscape 6 uses the <object/> element like Internet Explorer and Opera.
Another note on <embed/>:
Use of <embed/> is strongly discouraged, but there's no other chance. Let's hope support for Netscape 4.x won't be neccessary any more in a few months.
A note on <applet/>:
The <applet/> element is deprecated since HTML 4.01 or earlier (http://www.w3.org/TR/html401/struct/objects.html Objects in HTML 4). One should use the <object> element instead anyway. The semantic description of html elements found in the technical report of the html 4.01 recommendation is still valid for current html versions of today (XHTML 1.1 and XHTML Basic 1.0).
There's also a funny page of Sun about HTML: http://java.sun.com/products/plugin/1.3/docs/tags.html. Don't take that page too serious since it states it is talking about HTML, but it isn't.
If you use the HTML Converter, be sure to use the Extended (Standard + All Browsers/Platforms) template to tell Netscape, Opera and Internet Explorer regardless of the used version to display the applet correctly. But watch out: the generated code is not HTML and will perhaps even crash your page in Internet Explorer 6 and browsers that rely on the HTML standard! It also won't work with Netscape 6 if there is a different version of the Java Plugin installed more recently than the requested. I have SDK 1.3, 1.3.1 and 1.4 installed, and Netscape 6 wants to download the 1.3.1 Plugin.
The best way to make your applet work in really every browser is to study what the converter is trying to do and code it by yourself in a conformant way. Be sure not to tell the browser the Plugin version to use to avoid the neccessarity of downloading outdated plugins and installing several plugins (1.2, 1.2.1, 1.2.2, 1.3, 1.3.1, 1.3.1_01, 1.3.1_02, 1.4...).

Applet in Netscape (gah! due today)

Any ideas why an applet wouldn't align properly in Netscape? It works fine but it's not fitting in table correctly.
Thank you so much!!!!!!!!!!

Images and applets never align properly in Netscape because Netscape is a pile of cr*p (excuse my language). If it works in IE, you know you're doing it roughly right.

TOC/Script problem with Netscape

I am using RoboHelp (webhelp) 5.5.
I am facing two problem with netscape browser.
1. loading the page itself take long time and show a message
that script on this page is causing mozilla to run slowly.
2. in the TOC when i click the TOC BOOK the content of the
page inside that book is opened in new tab page in the same browser
instant

Hello Robo_Rajesh,
Welcome to the forum.
As a start point, I would suggest you check the following on
Peter Grainge's web site for an explanation.
Click
here.
Hope this helps.
Brian

A script/applet to indicate Time Machine Activity?

Hi,
I have just started using the Time Machine, and believe that it should have an activity indicator somewhere unobtrusively (perhaps in the dead 4 mm to the right of the Spotlight "magnifying glass" icon?). I am using a 500Gb LaCie drive for back-up, connected by a FW800 cable to my MacBook Pro. At times, I'd like to pack it up and go, but must open the System Preferences first, to make sure that the disk is not in use by the Time Machine at the very moment. The indicator should also offer a way of halting the back-up, in case I need to eject the back-up disk, pack up the MBP and go. (I do carry it around to all meetings and such during my work-day!)
I have posted a similarly-worded suggestion in Apple's feedback site. Until they do implement such a thing, does anyone know of an existing script or applet (or can write one) that would offer this?
Thanks, Tristan

First, it's great you have submitted this suggestion to Apple FeedBack. That is the only real way to get Apple's attention. More people should adopt this approach for suggestions like this.
1. TM backup activity is shown in two places. It's shown by two rotating arrows in the Finder's sidebar to right of the TM backup volume. The second place is the TM Pref panel itself.
2. The TM backup can be stopped by clicking the "x" icon to right of the backup progress bar in the TM Pref panel.
3. If you pack up your MBP (i.e., shut it down) while TM backup is in progress a warning message window will be displayed and you can either quit the backup or let it complete.
4. One could also use Activity Monitor and simply Quit the backupd process - but don't recommend this.
5. I'm unaware of any readily available script or drop-on Applet for doing what you've requested.
The above techniques shouldn't take too much effort on your part prior to packing up your MBP.
Good luck....

Repaint problems with an applet under Netscape 4.75

Hello,
I'm currently working on an applet created with VisualAge for Java, running under the standard Netscape 4.75 JVM, with Windows NT4.
I am experiencing problems with AWT components which randomly disappear, especially Labels and sometimes Panels. When I drag a window over the missing label and then drag it back, the label appears.
I have tried a lot of combinations with the repaint(), paint(), paintAll() and paintComponents() methods, but it has not been efficient for the moment. Introducing lots of repaint() calls on the concerned labels is even worse.
Is there a known bug in the Netscape 4.75 JVM concerning this problem ? Do you have an idea of what can be done to solve this problem ? Changing the JVM is not an option that can be chosen. Netscape 4.75 has been defined as the only browser for the whole project.
Thanks for your help !
Kevin

Well, I finally solved this problem.
For your information, the JVM included in Netscape 4.75 running under NT4 does not like having AWT labels with either Background or Foreground not initialised. If any of these 2 properties is not defined, it could sometimes occur that the JVM can't display the label.

Scripting applet in netscape

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