Applet development in Internet Explorer Vs AppletViewer

hello, i have build rmi chatting applet.
when i test my applet with appletviewer, it work finely
but when i try it in internet explorer 6 it can do properly
like in appletviewer. what's wrong with it?
for information, i build my applet with jbuilder 5 and i have
setting my html file so ie6 can recognize my applet with <object>
</object> tag. what's problem exactly with my development?

If you look in the Plug-in console (right click on the icon on your task bar in Windows) you will probably see that you have a Security Exception because unsigned applets are not allowed to connect to other hosts.
Solutions
1. buy a certificate and sign the applet
2. for testing, use PolicyTool to grant the required SocketPermission(s)
Search the archives for details of how to do either.
Regards
Matthew

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Aslam o Alikum (Hi)
Let me explain my question
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Applets, JavaScript and Internet Explorer

Hey guys
Is there any way that an applet can call javascript functions in Internet Explorer? I know it's possible in Netscape, but I've yet to come across a viable solution for Internet Explorer.
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Ryen

There is an easy way to change HTML code from JavaScript by calling an applet, which is not exactly what you want, but is much more simplier.
Define your applet as scriptable=true.
Within JavaScript call the method that knows the information you want to print and make it return as a String.
For example:
// JavaScript
View.innerText = myApplet.giveMeMore(); // return a string.
// The HTML View
<div id="View"></div>
You can see something like that with an Swing Applet in http://www.amicworld.com by following XmlBroker.

Applet Viewer Vs Internet Explorer

I have a applet that displays popupmenus on a button click it works great when viewed through the applet viewer but under Internet explorer everything appears right but when you click on a button hNothingapp
happens.

No threads! Thats not the issue here!!!
class a extends Applet implements ActionListener
   Button b;
   public void init()
      b=new Button("the button");
      add(b);
      b.addActionListener(this);
      System.out.println("init ok");
   public void actionPerformed(ActionEvent e)
      System.out.println("actionPerformed start");
      PopupMenu p;
      p=new PopupMenu("Jalla");
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}This is what you are describing... Check against my code to find what you have forgotten. Also: use the java console in IE a lot (View->Java Console) You have to switch it on under (Tools->Internet Options->Advanced->Microsoft VM)
Regards,
Ragnvald Barth
Software engineer

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var testElement = document.createElement('table'),
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jsTestsElement.innerHTML = '<ul>';
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jsTestsElement.innerHTML += '<li>'+name+'</li>';
jsTestsElement.innerHTML += '</ul>';
Otherwise all I've got at the moment is the user agent string: Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 8.12; MSIEMobile 6.5)
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I've been struggling with this one for a week now with no success, hope someone can help. I have Windows 2000, SP4, IE5.5, everything was working fine with the initial installation of JRE 1.3.2, then upgrades to 1.3.4, 1.3.7, 1.4.1 and finally 1.4.2. An applet forced an install of 1.3.1_07, and it stopped working, I uninstalled both 1.3.1_07 and 1.4.2 and reinstalled 1.3.1_07, and since then I get a dialog with the message:
Cannot load class sun/plugin/JavaRunTime.
The Bridge was installed at <C:\PROGRA~1\JavaSoft\JRE\1.37DB1~1.1_0> but the class is not there
Modify the registry key to reflect the new bridge location
The key is HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in
or change your CLASSPATH to include the new directory
Please consult the documentation for more information
And the dialog title says "Java(TM) Plug-in 1.4 Fatal Error"
BUT 1.4 is uninstalled and totally GONE!
I have uninstalled and reinstalled numerous times, numerous versions of JDK/JRE, always with the same basic result. Any attempts to install 1.4.x (either JRE or JDK) give this dialog PLUS a series of little dialogs with the header "asdas", and the message "register failk". I've looked through the forums and buglists for this same problem and found a few mentions of it, but there never seems to be any solution given.
And by the way, Mozilla 1.4 works perfectly with all the plug-in versions I've installed.
I'm beginning to believe there's a conspiracy....

I found my own solution to this one after many more hours of frustration. I found that there was a toolbar applet installed in Internet Explorer that started its own private JVM, and that JVM was being seen by the plugin code for 1.3.1_07. Apparently there was some conflict between what the plugin code expected and what that private JVM (not sure what version it was, the code had no mention of it) had to offer, which caused the crash dialog. Uninstalling the toolbar (and its parent application) solved the problem. I may do further testing to see if there are any plugin versions that do work with this particular applet.
It is also still a mystery why this problem only cropped up after installing and uninstalling 1.4.x version of the plugin, but I didn't keep close track of the whole sequence so it may have been coincidental.
Hope this helps someone.

Java 7 update 10 not working with Internet Explorer 8

Hi there,
I recently upgraded to Java 7 update 10 and ever since no Java applet loads in Internet Explorer 8 (works fine in Firefox 17.1).
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Ninko
P.S. I'm running Windows Vista Home Premium (all updated), in case it helps.
Edited by: 979765 on 03-Jan-2013 17:21
Edited by: 979765 on 03-Jan-2013 17:21

I agree - check to make sure IE itself hasn't disabled Java.
Since you're using Java 7.10, please also check the Security tab in the Java Control Panel which can be found in the Windows Control Panel.
While in the Java Control Panel, check also the Advanced tab and make sure Microsoft Internet Explorer is checked under 'Default Java for browsers'
Alternatively check this registry key: HKCU\Software\AppDataLow\Software\JavaSoft\DeploymentProperties
For this setting: deployment.webjava.enabled
Make sure its set to 'true' to enable java; if its 'false' it disables java.

After upgrade to firefox 5 my webmail inbox has message stating,you have undefined mails in your inbox,but there seems to be no way to access these mails.Works perfectly well with internet explorer.

system goes to talktalk website as normal,click on my mail,then on login,and up comes message you have undefined mails in your inbox.normally the message would say ,you have X No of new mails.No matter what I try I cannot gain access to my messages.If i use internet explorer i get my messages no problem

I found my own solution to this one after many more hours of frustration. I found that there was a toolbar applet installed in Internet Explorer that started its own private JVM, and that JVM was being seen by the plugin code for 1.3.1_07. Apparently there was some conflict between what the plugin code expected and what that private JVM (not sure what version it was, the code had no mention of it) had to offer, which caused the crash dialog. Uninstalling the toolbar (and its parent application) solved the problem. I may do further testing to see if there are any plugin versions that do work with this particular applet.
It is also still a mystery why this problem only cropped up after installing and uninstalling 1.4.x version of the plugin, but I didn't keep close track of the whole sequence so it may have been coincidental.
Hope this helps someone.

AppletViewer won't run an applet that runs in Internet Explorer?? Whats up?

I have an applet that I created. It runs in Internet Explorer perfectly. I mean perfectly, every single time, without a problem.
But, if I try to run appletviewer with this applet, it gives all kinds of exception messages: Ever seen this before?
Thanks!

Why not just paste the applet code. I know it is simple, but here it is. I am new to java so you may see some weird code for sure.... It is suppose to countdown to a given date/time... Just something simple to help me learn Java.
If anyone else has time and wants to compile it and try to get it to run as an Active Desktop Item that would be super cool
Thanks!!!!
Here is the html page code:
<HTML>
<HEAD>
<TITLE>Countdown Applet</TITLE>
</HEAD>
<BODY>
<APPLET CODE="PKVTimer.class" HEIGHT=30, WIDTH=120>
     <param name=BackColorRed value="0">
     <param name=BackColorGreen value="128">
     <param name=BackColorBlue value="0">
     <param name=ForeColorRed value="255">
     <param name=ForeColorGreen value="255">
     <param name=ForeColorBlue value="255">
     <param name=Year value="2003">
     <param name=Month value="9">
     <param name=Day value="27">
     <param name=Hour value="6">
     <param name=Minute value="30">
</APPLET>
</BODY>
</HTML>
Here is the code:
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.*;
class TimeInMillis extends GregorianCalendar {
     public long getMillisForDate(Calendar calIn) {
          getInstance();
          setTime(calIn.getTime());
          long now = getTimeInMillis();
          return now;
public class PKVTimer extends Applet implements Runnable
     private Thread thThread;
     private Label tfCountdown;
     private Panel P1;
     private Calendar clCalendar, clHuntCalendar;
     private String sDays, sTime, sHrs, sMins, sSecs;
     private int iYear, iMonth, iDay, iHour, iMinute;
     public void init()
          String cRed = getParameter("BackColorRed");
          String cGreen = getParameter("BackColorGreen");
          String cBlue = getParameter("BackColorBlue");
          String cfRed = getParameter("ForeColorRed");
          String cfGreen = getParameter("ForeColorGreen");
          String cfBlue = getParameter("ForeColorBlue");
          iYear = Integer.parseInt(getParameter("Year"));
          iMonth = Integer.parseInt(getParameter("Month"));
          iDay = Integer.parseInt(getParameter("Day"));
          iHour = Integer.parseInt(getParameter("Hour"));
          iMinute = Integer.parseInt(getParameter("Minute"));
          Color background = new Color(Integer.parseInt(cRed),
                              Integer.parseInt(cGreen),
                              Integer.parseInt(cBlue));
          Color foreground = new Color(Integer.parseInt(cfRed),
                              Integer.parseInt(cfGreen),
                              Integer.parseInt(cfBlue));
          // Set the applet background color to match the label background
          setBackground(background);
          tfCountdown = new Label("asdfasdfasdfasdfasdf");
          tfCountdown.setBackground(background);
          tfCountdown.setForeground(foreground);
          tfCountdown.setFont(new Font("Arial",Font.PLAIN,10));
          P1 = new Panel();
          P1.setLayout(new FlowLayout(FlowLayout.LEFT,0,2));
          P1.add(tfCountdown);
          add("North",P1);
          tfCountdown.setBounds(10,10,300,30);
          clHuntCalendar = Calendar.getInstance();
clHuntCalendar.set(iYear,iMonth-1,iDay,iHour,iMinute,0);
          sTime = new String();
          thThread = new Thread(this);
          thThread.start();
     public void run()
          while(true)
               clCalendar = Calendar.getInstance();
               TimeInMillis gcTM = new TimeInMillis();
               long lMilliHunt = gcTM.getMillisForDate(clHuntCalendar);
               long lMilliNow = gcTM.getMillisForDate(clCalendar);
               if (lMilliNow >= lMilliHunt) {
                    tfCountdown.setText("Go Bust One!!!");
                    this.stop();
                    return;
               long elapsedTime = lMilliHunt - lMilliNow;
               long lTemp, lDays, lHrs, lMins, lSecs;
               lTemp = elapsedTime/(60*60*1000L);
               lHrs = lTemp;
               lDays = lHrs / 24;
               lHrs = lTemp - (lDays * 24);
               if (clCalendar.get(clCalendar.SECOND) >= clHuntCalendar.get(clHuntCalendar.SECOND)) {
                    lSecs = 60 - (clCalendar.get(clCalendar.SECOND) - clHuntCalendar.get(clHuntCalendar.SECOND));
                    clCalendar.set(clCalendar.MINUTE,clCalendar.get(clCalendar.MINUTE)+1);
               else {
                    lSecs = (clHuntCalendar.get(clHuntCalendar.SECOND) - clCalendar.get(clCalendar.SECOND));
               if (lSecs == 60) {
                    lSecs = 0;
               if (clCalendar.get(clCalendar.MINUTE) >= clHuntCalendar.get(clHuntCalendar.MINUTE)) {
                    lMins = 60 - (clCalendar.get(clCalendar.MINUTE) - clHuntCalendar.get(clHuntCalendar.MINUTE));
               else {
                    lMins = (clHuntCalendar.get(clHuntCalendar.MINUTE) - clCalendar.get(clCalendar.MINUTE));
               if (lMins == 60) {
                    lMins = 0;
               sDays = String.valueOf(lDays) + " Days ";
               if (lHrs < 10) {sHrs = "0" + String.valueOf(lHrs);} else {sHrs = String.valueOf(lHrs);}
               if (lMins < 10) {sMins = "0" + String.valueOf(lMins);} else {sMins = String.valueOf(lMins);}
               if (lSecs < 10) {sSecs = "0" + String.valueOf(lSecs);} else {sSecs = String.valueOf(lSecs);}
               sTime = sDays + sHrs + ":" + sMins + ":" + sSecs;
               tfCountdown.setText(sTime);
               try {
                    thThread.sleep(1000);
               } catch (InterruptedException e) {}
     public void stop()
          thThread = null;

Problem: displayed output in appletviewer vs internet explorer

I am new to Java programming, having recently completed by first class. I have been trying to set up the Java Development Kit on my PC at home. I installed J2SDK1.4.1_01 and edited my autoexec.bat file to: (1) add ;C:\J2SDK1.4.1_01/BIN to the PATH statement and (2) create a CLASSPATH statement: SET CLASSPATH=;.;
I been using old programs from class to test the install and have encountered a problem. I recompiled a program which outputs an applet. I can view the applet in Appletviewer, but when I go to view it in Internet Explorer, I see only a gray rectangular box.
I tried a slightly different program which, in addition to producing an applet, also (in the html code) prints different sized heading lines.
I see the applet only in Appletviewer. In Internet Explorer, I see the heading lines and a retangular gray box. Both this and the first program import java/awt/Graphics.
I have tried variations for CLASSPATH such as SET CLASSPATH=;.;C:\J2SDK1.4.1_01 AND C=;.;C:\WINDOWS\JAVA\PACKAGES\zipfile (repeating the C:\WINDOWS... for each zipped file) .... nothing works
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Thanks for your suggestion to search the forum for similar problems. I went into the control panel to try and enable Java Plug-in. I found two Java Plugin icons. One was for an earlier version ... 1.3 and the other showed up as J2SDK1.4.1_01. I took the check off the 1.3 version to unenable it and went to enable the 1.4.1_01 plugin. The problem is, it had no enable check box. So I went to the advanced features of Internet Options to try and enable Java Plugin from there. Under Java(SUN) there was no listing for a Java JIT compiler to enable. There was a JIT Compiler which could be enabled under Microsoft VM. I didn't think it would work, but I tried enabling it and rebooting. ... I was still unable to see applets in IE. I then tried unenabling it with similar results.
Today, I uninstalled 1.3 and uninstalled/reinstalled 1.4.1_01 (without a problem) and rebooted. I went into the control panel to try and enable the Java Plugin (of which there was just 1 now), and it gave me this error message: The system cannot find the registry key specified // HKEY_LOCAL-Machine\Software\JavaSsoft\Java Plug-in\1.4.1-01.
Bottom line ... I still can't see applets in IE. I have tried finding the answer about the Key Registry problem in Forums, but I didn't see one that tied into my problem. Also, there is still no listing within the advanced features of Internet Options for Java (Sun) - JIT Compiler ...so I still can't enable it from there.
At this point, I don't know if I've inadverently done something to screw things up. I'd really like to start playing around in Java, but I can't until I have the system set up properly. Anyone have any ideas?

Works in applet viewer but not in internet explorer

I origionaly posted this on devshed. I got 55 views but no replies. It seems to be a common problem to which no one knows the answer. Surprise me :O)I'm sure this is a really common but there seems to be surprisinly litttle on the web about it.
I developed a game applet a while ago in applet viewer and am now thinking about putting it on my web site. However I have found that it doesn't work in internet explorer. I can browse other sites using Java fine. There is clearly just something about my applet that ie doesn't like.
Does anyone have any suggestions? What sort of things upset ie?
All help very much apreciated, you are very nice people
Flo.

There must be some thing that tells you it isn't working. You should tell us so we don't have to guess. Does the browser hang? Do you get an error? Did you try opening the Java Console to see if there were any messages? I am guessing that your code is using something that the security level of an Applet does not allow (but appletviewer does allow).

Applet failed to load in Internet Explorer when using JRE 1.5 update 5

I have downloaded JRE 1.5 Update 5 and checked the relevant checkbox in Internet Explorer Advanced tab to use JRE 1.5 for applets. Did the same in Java Control Panel. However none of the applets seem to load.
For example I went to this site:
http://java.com/en/download/help/testvm.xml
The applet didn't load and I got the following error in my Sun Java Console :
load: class JavaVersionDisplayApplet.class not found.
java.lang.ClassNotFoundException: JavaVersionDisplayApplet.class
     at sun.applet.AppletClassLoader.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)
Caused by: java.io.IOException: open HTTP connection failed.
     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)
     ... 10 more

And it's the same behaviour in JRE 1.5 update 8 as well.

Applet isn't loading up in Internet Explorer.

I have an applet which I wish to run in a webpage.
I use the appletviewer for viewing my applet but the problem is when I try to run it through the internet explorer 5.0.
Could anybody help me?
Here's the code for my program...
import java.awt.*;
import java.applet.Applet;
public class ComponentLabel extends Applet{
Label lblhello;
     public void init(){
lblhello=new Label("Hello");
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Here's the code for the HTML page that I've made for viewing the program.
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body bgcolor="#FFFFFF" text="#000000" background="bbg.jpg">
<applet code="ComponentLabel.class" width="994" height="67">
</applet>
</body>
</html>
It says a ComponentLabel.class not loaded... is it something about the path or do I need a constructor or something?

I had the same problem with the latest version of Internet Explorer (v6.0) that I downloaded from Microsoft yesterday.
Compiling with javac -target 1.1 solved the problem a class that extends Applet. However, this does not seem to work for a class that extends JApplet. (I understand that JApplet is needed for Swing components to work correctly.) Is there any way to get Internet Explorer (v6.0) to work with Swing components and/or JApplet ?
Thanx.

Applet development in Internet Explorer Vs AppletViewer

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