Get Applet object

Hi everybody,
I have several frames in an HTML page (nothing in static, all is generated).
I have 1 applets in the frame 1 and an applet in the frame 2.
I would like to get the applet object (java.Applet.applet) of the applet 1 in the applet 2 ...
How could I do ?
For the moment, I get :
JSObject jsXelonContainer = (JSObject) ((JSObject) ((JSObject) window.getMember("top")).getMember("frames")).getMember("myFrame1");
JSObject myDoc = (JSObject)jsXelonContainer.getMember("document");
JSObject applets = (JSObject)myDoc.getMember("applets");
Nothing is null at this point. But I don't know how to get the Applet I want from the "applets"
May be is there another simplier way ...
Any idea ?
Thanks in advance
Rafax.

Ok.
In my case, it is an applet.
- The code declaration :
<OBJECT classid="clsid:8AD7C840-044E-11D1-B1E9-00805F499D93" width="200" height="200" align="left"
     codebase="http://java.sun.com/products/plugin/1.2.2/jinstall-122-win32.cab#Version=1,2,2,0" name="bootstrap" >
     <PARAM NAME="code" VALUE="com.elogiq.xelon.client.web.bootStrap">
     <PARAM NAME="archive" VALUE="../jar/myArchive.jar">
     <PARAM NAME="codebase" value="./class">
     <PARAM NAME="type" VALUE="application/x-java-applet;version=1.3">
     <PARAM NAME="name" value="myApplet">
     <PARAM NAME="scriptable" value="true">
     <PARAM NAME="MAYSCRIPT" value="true">
</OBJECT>
the classId your are saying ... is it the classid ? (I don't think, but ...)
Thanks,
Rafax

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Retrieve applet object

I'm fairly new to Java and I've been concentrating my efforts in applet programming. One thing I've noticed is that I seem to require the Applet object a lot in my code as I'm doing a lot of file reading (applet.getCodeBase, etc). I have a few instances in my code where I pass the applet object to different packages to perform basic operations and I'm starting to feel as if I'm doing this wrong.
Is there a way to obtain the applet object using a global static function?

Hi Mr Lob, will you think about the fact seriously that still no one seems to have understood your problemI know, the talent here is shocking.
As often illustrations could help...I agree when you are demonstrating algorithms, discussing implementation, compilation errors etc. Mind, I would have knocked something up for you if you'd have responded with some decency and not made out there was a problem with my post. Telling me to post a demo is impolite, you could have asked to see something and I would have gladly responded. You don't know me & I don't you know, so you shouldn't assume you have superiority over me.
I just wanted a brief code that could illustrate your problem/issue.You'd have a class declaration (unrelated to 'Applet') with an empty function member, in it would be a comment saying:
// I would like to get applet object the libraries invoked at this point in the code...Close your eyes and imagine it...
So it is plain obvious that the looser in these word battle is you, not petes1234 et al.LOL. Firstly, I never said petes1234 was a 'loser', he's just an idiot for posting unrelated & directly offensive comments. It's water off a ducks back, mind. Secondly, there's no way I'm a loser posting what I have. However, I will settle for 'loser in the quest to find an accomplished Java programmer within this public forum.'
I thought I was a part of the 'do-not-help' list? Why are you still posting? Let it lie...
Just so you know, I found an answer to my question elsewhere asking exactly the same thing. Now, .... "Think about that!"

Getting applets to work in Firefox or IE7!!

Hi folks.
I've been reading Jason Hunters excellet book on Java Servlet Programming and become rather stuck on being able to get applets to work in a browser.
1) I managed to briefly get an Applet to work in IE7. Then things went astray (I say work, because applet initially displayed correctly graphically)
2) I introduced a bug and tried to redisplay. And haven't been able to recover.
3) When 2) occurred I swapped over to Firefox, since IE7 doesn't have a Java Console. (& theres no setting to enable it in security settings either)
4) Then Firefox prompted to download JRE... This was an odd one to me.... Since I already had a Java runtime...
I got this through downloading file java_app_platform_sdk-5_04-windows.exe
java -version yeilds:
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Jeremy>java -version
java version "1.6.0_04"
Java(TM) SE Runtime Environment (build 1.6.0_04-b12)
Java HotSpot(TM) Client VM (build 10.0-b19, mixed mode)
C:\Documents and Settings\Jeremy>
Browser Versions
IE : is at version 7.0.5730.13
Firefox started out at 2.0.0.12... Now Firefox didn't seem to detect the JRE
5) It said additional plugins are required to display the media on this page...
6) I clicked the button to "Install missing plugins"
It then presents Plugin Finder Service with "Available Plugin Downloads" of Java Runtime Environment with checkbox ticked.
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No plugins were installed
Java Runtime Environment failed with "Manual Install" button...
Clicking said button gave me executeable xpiinstall.exe from http://sdlc-esd.sun.com
8) When I ran this it
a) proceeded to cause Firefox to crash and a report was sent to Mozilla...
b) created a restore point called "Installed Java (TM) 6 update 5..
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Now it complained about missing classes which I felt sure were in a jar I'd deployed in Tomcat...
10) I tried to validate my assumptions by looking inside the Jar with Winzip...
Then I got a pop up with "Java Virtual Machine Launcher" in its title saying..
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At this point I realised 8) was the culprit after posting here and looking at possible causes for said pop-up.
[http://www.artima.com/forums/flat.jsp?forum=1&thread=61427&start=75&msRange=15]
None of solutions posted there seemed to apply to me
11) So now I restored to a restore point prior to 8) and though my problems were over
12) I've since upgraded to Firefox 2.0.0.14. Firefox pushed update to me. Also tried manually uninstalling and downloading file. Still saying missing plugin!!!
13) I've tried changing my tags in my html from
APPLET to OBJECT for IE7 or EMBED for Firefox..
I've validated my APPLET with APPLETVIEWER following advice posted here:
[http://java.sun.com/docs/books/tutorial/deployment/applet/index.html]
No tell tale signs appear in Tomcat Console or logs..
*The only thing that seems weird is codebase tag*
14) Book I've been reading mentioned putting both html code and applet class in root folder of tomcat
I've hosted both files here:
C:\Apps\apache-tomcat-6.0.16\webapps\ROOT
15) When I test with appletviewer from this folder and codebase set to / appletviewer doesn't find class.
I think I need to set this so when web browser runs it finds class. Maybe this is the route of my problems.
What's haunting me here though is placeholder for applet graphic worked at one point!
I don't recall fussing with codebase attribute of applet tag, yet suddenly things stopped working.
16) When I tried to verify with appletviewer I had to remove codebase attribute completely to get things to work.
Here are three versions of html file. Firefox version doesn't seem to be recognized by Appletviewer
Applet tag version: (BTW have tried with CODEBASE=/ too. This was how it appeared in book, Remember I'm hosting in Tomcat 6.0.16)
{code}
<HTML>
<HEAD><TITLE>Daytime Applet</TITLE></HEAD>
<BODY>
<CENTER><H1>Daytime Applet</H1></CENTER>
<CENTER><APPLET CODE="DaytimeApplet.class" WIDTH=300 HEIGHT=180></APPLET></CENTER>
</BODY></HTML>
{code}
IE Version only
{code}
<HTML>
<HEAD><TITLE>Daytime Applet</TITLE></HEAD>
<BODY>
<CENTER><H1>Daytime Applet</H1></CENTER>
<CENTER><object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
width="300" height="180">
<param name="code" value="DaytimeApplet.class"></object></CENTER>
</BODY></HTML>
{code}
Firefox version with JRE matching what java -version says precisely and using "jpi-version" so need for download instructions url 'should' be redundant..
{code}
<HTML>
<HEAD><TITLE>Daytime Applet</TITLE></HEAD>
<BODY>
<CENTER><H1>Daytime Applet</H1></CENTER>
<CENTER>
<embed code="DaytimeApplet.class"
width="300" height="180"
type="application/x-java-applet;jpi-version=1.6.0_04"/>
</CENTER>
</BODY></HTML>
{code}
I don't want to be staring at a placeholder in a Web Browser.
I want to GUI as it appears in AppletViewer and how it once had it working in IE7!
You wouldn' t think that was to much to ask for would you! Sorry for length of this post.
Any clues as to where to go next would be greatly appreciated as I'm pulling hairs out with frustration at the moment...
A few of footnotes:
1) I've relaxed my security zone settings for intranet, added localhost to local intranet sites..
2) I've tried deleting all temporay files in IE7 even to point of resetting to install setup thinking there may be some sort of caching issue with bad applet... No luck
3) I can still get Glassfish server to login to Admin Console.
So the integrity of my pc should me intact based on the shenanigans of point 11. Restoring to get rid of second JRE

paulcw wrote:
I'm not sure what to tell you. I've never had any trouble installing the JRE and getting applets to work. Maybe it's an IE7 thing. Firefox is usually easier to configure.
Anyway, it sounds like something that you need to be sitting at your computer to fix, so I don't know how useful a forum will be. It might be best just to ask a coworker with a lot of arcane knowledge to take a look at it.1) Unfortunately I'm learning from home and don't have the luxury of asking a co-worker. Have fired off email to one of folks at Sun..
In my efforts to try and track down the problem yesterday, Google uncovered some interesting findings regarding Caching of Applets. Thought I'd share this:
2) [http://www.velocityreviews.com/forums/t603400-ltobjectgt-tag-and-applet-caching.html]
There is an interesting post some way down posted by james.a.cleland
Quote:
"My solution is to x-c in the Java console to clear
this cache. This works without unloading the JVM and while the applet
is running. It looks like the browser isn't caching any applets. At
least my browser cache doesn't contain any, although I do regularly
use half a dozen, so it must be the JRE. Anyway, clearing through the
console solves my problem".
I can't access Java Console in IE7 as you know...
3) There is always another way to skin a cat regarding clearing cache.
Found this here:
[http://www.aurigma.com/Support/DocViewer/28/UpdatingImageUploaderonClientSide.htm.aspx]
Search for Java section
Quote:
"Java applets are stored in the cache that is accessible through the Java control panel. Follow these steps to do it:
Open Java Plug-in Control Panel. Depending on the platform, it can be found in different locations:
Windows: Control Panel -> Java Plug-in
Click the Cache tab.
Click Clear to clear all cached applets."
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4) Also saw this article on *"How to troubleshoot Java applet and component download problems"* at:
[http://support.microsoft.com/kb/241111]
Java console or output log section:
Javalog.txt in the windows\java or winnt\java directory
windows\java contains
- classes
- trustdb
No such file: classes & trustdb are empty folders.
5) I have same problem mentioned here:
[http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=915520&SiteID=1]
Quote:
"I cannot get java applets to display on any web pages - instead this message appears:
alt="Your browser understands the <APPLET> tag but isn't running the applet, for some reason." Your browser is completely ignoring the <APPLET> tag! "
Yep. That's my predicament.
BTW: Get this by doing test here:
[http://java.sun.com/products/plugin/1.5.0/demos/applets/Clock/example1.html]
6) Sun's Verify Installation fails on me too:
[http://www.java.com/en/download/installed.jsp]
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8) Is there an installation integrity verifier for Sun? Something that verifies the integrity against a baseline install and reports anomalies.Like I mentioned earlier I've got java_app_platform_sdk-5_04-windows.exe file installed. Not the latest incarnation, but the one immediately before. With SE 1.6.0_04-b12 built built into it

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31997 14:20:05 (1) !! ERROR: WMI ENUMERATION operation errors reported: .......................................... 33 ERROR(S)!
31998 14:20:05 (0) ** - ROOT/CIMV2, InstancesOfAsync, CIM_USBDevice, 0x80080005 - .
31999 14:20:05 (0) ** - ROOT/CIMV2, InstancesOfAsync, CIM_USBHub, 0x80080005 - .
32000 14:20:05 (0) ** - ROOT/CIMV2/SMS, InstancesOfAsync, SMS_Class_Template, 0x80041011 - (WBEM_E_PROVIDER_NOT_FOUND) Provider referenced in the schema does not have a corresponding registration.
32001 14:20:05 (0) ** - Root/Default, InstancesOf, SystemRestore, 0x80080005 - Server execution failed.
32002 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_Process, 0x80080005 - Server execution failed.
32003 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_OperatingSystem, 0x80080005 - Server execution failed.
32004 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_ComputerSystem, 0x80080005 - Server execution failed.
32005 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_Service, 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32006 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_Bios, 0x80080005 - Server execution failed.
32007 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_Tcpip_IP, 0x80080005 - Server execution failed.
32008 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_Tcpip_TCP, 0x80080005 - Server execution failed.
32009 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_Tcpip_UDP, 0x80080005 - Server execution failed.
32010 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_Tcpip_ICMP, 0x80080005 - Server execution failed.
32011 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_PerfOS_Cache, 0x80080005 - Server execution failed.
32012 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_PerfOS_Memory, 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32013 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_PerfOS_Objects, 0x80080005 - Server execution failed.
32014 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_PerfOS_PagingFile, 0x80080005 - Server execution failed.
32015 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_PerfOS_Processor, 0x80080005 - Server execution failed.
32016 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_PerfOS_System, 0x80080005 - Server execution failed.
32017 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_PerfProc_Process, 0x80080005 - Server execution failed.
32018 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfRawData_PerfProc_Thread, 0x80080005 - Server execution failed.
32019 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_Tcpip_IP, 0x80080005 - Server execution failed.
32020 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_Tcpip_TCP, 0x80080005 - Server execution failed.
32021 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_Tcpip_UDP, 0x80080005 - Server execution failed.
32022 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_Tcpip_ICMP, 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32023 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_PerfOS_Cache, 0x80080005 - Server execution failed.
32024 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_PerfOS_Memory, 0x80080005 - Server execution failed.
32025 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_PerfOS_Objects, 0x80080005 - Server execution failed.
32026 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_PerfOS_PagingFile, 0x80080005 - Server execution failed.
32027 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_PerfOS_Processor, 0x80080005 - Server execution failed.
32028 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_PerfOS_System, 0x80080005 - Server execution failed.
32029 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_PerfProc_Process, 0x80080005 - Server execution failed.
32030 14:20:05 (0) ** - Root/CIMv2, InstancesOf, Win32_PerfFormattedData_PerfProc_Thread, 0x80080005 - Server execution failed.
32031 14:20:05 (0) **
32032 14:20:05 (1) !! ERROR: WMI EXECQUERY operation errors reported: ............................................ 17 ERROR(S)!
32033 14:20:05 (0) ** - Root/Default, SELECT * FROM SystemRestore, 0x80080005 - Server execution failed.
32034 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_LogicalDisk WHERE FreeSpace > 10000000 AND DriveType = 3, 0x80080005 - Server execution failed.
32035 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_PageFileUsage, 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32036 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_BIOS WHERE Version IS NOT NULL, 0x80080005 - Server execution failed.
32037 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_NetworkAdapter WHERE AdapterType IS NOT NULL AND AdapterType != "Wide Area Network (WAN)" AND Description != "Packet Scheduler Miniport", 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32038 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_Processor WHERE Name IS NOT NULL, 0x80080005 - Server execution failed.
32039 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_DiskDrive, 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32040 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_ComputerSystem, 0x80080005 - Server execution failed.
32041 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_DiskPartition, 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32042 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_LogicalDisk WHERE Description != "Network Connection", 0x80080005 - Server execution failed.
32043 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_SoundDevice, 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32044 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_VideoController, 0x80080005 - Server execution failed.
32045 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_USBController, 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32046 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_DesktopMonitor, 0x80080005 - Server execution failed.
32047 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_PointingDevice WHERE Status = "OK", 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32048 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_Keyboard, 0x80080005 - Server execution failed.
32049 14:20:05 (0) ** - Root/CIMv2, SELECT * FROM Win32_SystemDriver WHERE StartMode != "Disabled", 0x80041013 - (WBEM_E_PROVIDER_LOAD_FAILURE) COM cannot locate a provider referenced in the schema.
32050 14:20:05 (0) **
32051 14:20:05 (0) ** WMI PUT operations: ........................................................................ OK.
32052 14:20:05 (0) ** WMI DELETE operations: ..................................................................... OK.
32053 14:20:05 (0) ** WMI GET VALUE operations: .................................................................. OK.
32054 14:20:05 (0) ** WMI static instances retrieved: ............................................................ 1541.
32055 14:20:05 (0) ** WMI dynamic instances retrieved: ........................................................... 0.
32056 14:20:05 (0) ** WMI instances request cancellations (to limit performance impact): ......................... 0.
32057 14:20:05 (0) **
32058 14:20:05 (0) ** 38 error(s) 0x80080005 - (WBEM_UNKNOWN) This error code is external to WMI.
32059 14:20:05 (0) **
32060 14:20:05 (0) ** 1 error(s) 0x80041011 - (WBEM_E_PROVIDER_NOT_FOUND) Provider referenced in the schema does not have a corresponding registration
32061 14:20:05 (0) ** => This error is typically due to the following major reasons:
32062 14:20:05 (0) **    - The application queried by the WMI provider is not installed, not available or not running
32063 14:20:05 (0) **      at the time of the request was made. This error can also be generated because
32064 14:20:05 (0) **      the application supporting the providers has been uninstalled.
32065 14:20:05 (0) **    - The WMI provider binary files are not accessible (e.g. access denied ACL).
32066 14:20:05 (0) **    - A WMI provider registration problem at the CIM level (MOFCOMP.EXE) or at the COM level (REGSVR32.EXE).
32067 14:20:05 (0) **      You must re-register the WMI provider by recompiling its associated MOF file with MOFCOMP.EXE
32068 14:20:05 (0) **    Note: - If the WMI provider DLL CIM and COM registrations are correct, this error can
32069 14:20:05 (0) **            be returned because the provider has a dependency on another DLL that cannot be
32070 14:20:05 (0) **            loaded (missing or bad DLL)
32071 14:20:05 (0) **          - Dependencies can be found with the DEPENDS.EXE tool coming with the
32072 14:20:05 (0) **            Windows XP and Windows 2003 Support Tools. The command line is as follows:
32073 14:20:05 (0) **            e.g. DEPENDS.EXE <PATH><Provider.DLL>
32074 14:20:05 (0) ** => If the software has been de-installed intentionally, then this information must be
32075 14:20:05 (0) **    removed from the WMI repository. You can use the 'WMIC.EXE' command to remove the provider
32076 14:20:05 (0) **    registration data and its set of associated classes.
32077 14:20:05 (0) ** => To correct this situation, you can:
32078 14:20:05 (0) **    - Install or start the application supporting these providers.
32079 14:20:05 (0) **    - Register the providers in CIM (MOFCOMP) or DCOM (REGSVR32).
32080 14:20:05 (0) **    Note: In this case the provider should also be listed in the 'missing WMI
32081 14:20:05 (0) **          provider DCOM registrations' or in the 'missing WMI provider files' section.
32082 14:20:05 (2) !! WARNING: Re-registering with REGSVR32.EXE all DLL from 'C:\WINDOWS\SYSTEM32\WBEM\'
32083 14:20:05 (0) **          may not solve the problem as the DLL supporting the WMI class(es)
32084 14:20:05 (0) **          can be located in a different folder.
32085 14:20:05 (0) **          You must refer to the class name to determine the software delivering the related DLL.
32086 14:20:05 (0) **
Thanks, --Jo

Getting Applets to Work on the Web

Last semester, I took a Java programming class. While polishing up my resume recently, I decided that a couple of assignments I did for the class would look good in my porfolio, and attempted to upload them to my website.
Unfortunately, the class I took focused exclusively on getting applets to run on you local machine. Nothing I did for the class works in a web browser. This leads me to two questions:
1) IMO, Java that doesn't work in a web browser pretty much defeats the purpose of using Java. Since my local college's Comp Sci program is obviously failing in this regard, what are good resources to learn the Right Way to program in Java (ie, the way that works in web browsers)?
2) Are any of the things I did in class salvagable by any means short of starting over from scratch? Below is a cut-n-paste of a typical applet we wrote for the class, using the teacher's reccomended methods. If someone could point me in the right direction for getting this to work in a browser, I'd be very grateful.:
<code>
// Java Programming - CSCI-267
// Assignment for week # 13
// Filename AutoDatabase
// Written by Mike 'siece' Gilmore
// Written on Nov. 23 2k3
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
public class AutoDatabase extends Frame implements ItemListener, ActionListener{
Connection conEmployees;
Statement cmdEmployees;
ResultSet rsEmployees;
boolean blnSuccessfulOpen = false;
Choice lstVehicle = new Choice();
TextField txtInvID = new TextField(10);
TextField txtMan = new TextField(10);
TextField txtModName = new TextField(9);
TextField txtYear = new TextField(14);
TextField txtVID = new TextField(14);
TextField txtCost = new TextField(14);
Button btnAdd = new Button("Add");
Button btnEdit = new Button("Edit");
Button btnCancel = new Button("Cancel");
Button btnDelete = new Button("Delete");
Label lblMessage = new Label(" ");
public static void main(String args[])
AutoDatabase thisApp = new AutoDatabase();
thisApp.createInterface();
public void createInterface()
loadDatabase();
if(blnSuccessfulOpen)
setTitle("Java Class Week 13 Assingment");
addWindowListener(new WindowAdapter()
public void windowClosing(WindowEvent event)
stop();
System.exit(0);
setLayout(new BorderLayout());
Panel pnlTop = new Panel(new GridLayout(2,2,10,10));
pnlTop.add(new Label("Inventory ID"));
lstVehicle.insert("Select a Vehicle to Display", 0);
lstVehicle.addItemListener(this);
pnlTop.add(lstVehicle);
pnlTop.add(new Label(" "));
add(pnlTop, "North");
Panel pnlMiddle = new Panel(new GridLayout(7,2,10,10));
pnlMiddle.getInsets();
pnlMiddle.add(new Label("Inventory ID"));
pnlMiddle.add(txtInvID);
pnlMiddle.add(new Label("Manufacturer"));
pnlMiddle.add(txtMan);
pnlMiddle.add(new Label("Model Name"));
pnlMiddle.add(txtModName);
pnlMiddle.add(new Label("Year"));
pnlMiddle.add(txtYear);
pnlMiddle.add(new Label("Vehicle ID"));
pnlMiddle.add(txtVID);
pnlMiddle.add(new Label("Cost"));
pnlMiddle.add(txtCost);
setTextToNotEditable();
Panel pnlLeftButtons = new Panel (new GridLayout(0,2,10,10));
Panel pnlRightButtons = new Panel(new GridLayout(0,2,10,10));
pnlLeftButtons.add(btnAdd);
btnAdd.addActionListener(this);
pnlLeftButtons.add(btnEdit);
btnEdit.addActionListener(this);
pnlRightButtons.add(btnDelete);
btnDelete.addActionListener(this);
pnlRightButtons.add(btnCancel);
btnCancel.addActionListener(this);
btnCancel.setEnabled(false);
pnlMiddle.add(pnlLeftButtons);
pnlMiddle.add(pnlRightButtons);
add(pnlMiddle,"Center");
add(lblMessage, "South");
lblMessage.setForeground(Color.red);
setSize(400, 350);
setVisible(true);
else {
stop();
System.exit( -1);
public Insets insets()
return new Insets(40, 15, 15, 15);
public void loadDatabase()
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
catch(ClassNotFoundException err)
try
Class.forName("com.mx.jdbc.odbc.JdbcOdbcDriver");
catch(ClassNotFoundException error)
lblMessage.setText("Drivers did not load properly");
try
conEmployees = DriverManager.getConnection("jdbc:odbc:AutoDatabase");
cmdEmployees = conEmployees.createStatement();
rsEmployees = cmdEmployees.executeQuery("Select * from Vehicle;");
loadNames(rsEmployees);
blnSuccessfulOpen = true;
catch(SQLException error)
lblMessage.setText("Error: " + error.toString());
public void loadNames(ResultSet rsEmployees)
try
while(rsEmployees.next())
lstVehicle.add(rsEmployees.getString("InventoryID"));
catch(SQLException error)
lblMessage.setText("Error in Display Record." + "Error: " + error.toString());
public void itemStateChanged(ItemEvent event)
String strInventoryID = lstVehicle.getSelectedItem();
lblMessage.setText("");
try
rsEmployees = cmdEmployees.executeQuery(
"Select * from Vehicle where [InventoryID] ='" + strInventoryID + "';");
txtInvID.setText(strInventoryID);
displayRecord(rsEmployees);
setTextToEditable();
catch(SQLException error)
lblMessage.setText("Error in result set." + "Error: " + error.toString());
public void displayRecord(ResultSet rsEmployees)
String strFormat;
float fltCost;
try
if(rsEmployees.next())
txtInvID.setText(rsEmployees.getString("InventoryID"));
txtMan.setText(rsEmployees.getString("Manufacturer"));
txtModName.setText(rsEmployees.getString("ModelName"));
txtYear.setText(rsEmployees.getString("Year"));
txtVID.setText(rsEmployees.getString("VehicleID"));
NumberFormat fmtCurrency = NumberFormat.getCurrencyInstance();
NumberFormat fmtDecimal = NumberFormat.getInstance();
fltCost = Float.valueOf(rsEmployees.getString("CostValue")).floatValue();
strFormat = fmtCurrency.format(fltCost);
txtCost.setText(strFormat);
lblMessage.setText("");
catch (SQLException error)
lblMessage.setText("Error: " + error.toString());
public void actionPerformed(ActionEvent event)
Object objSource = event.getSource();
if(objSource == btnAdd && event.getActionCommand()=="Add")
Add();
else if(objSource == btnAdd)
Save();
else if (objSource == btnEdit)
Edit();
else if(objSource == btnDelete)
Delete();
else if(objSource == btnCancel)
Cancel();
public void setTextToNotEditable()
txtInvID.setEditable(false);
txtMan.setEditable(false);
txtModName.setEditable(false);
txtYear.setEditable(false);
txtVID.setEditable(false);
txtCost.setEditable(false);
public void setTextToEditable()
txtInvID.setEditable(true);
txtMan.setEditable(true);
txtModName.setEditable(true);
txtYear.setEditable(true);
txtVID.setEditable(true);
txtCost.setEditable(true);
public void clearTextFields()
txtInvID.setText("");
txtMan.setText("");
txtModName.setText("");
txtYear.setText("");
txtVID.setText("");
txtCost.setText("");
public void Add()
lblMessage.setText(" ");
setTextToEditable();
clearTextFields();
txtInvID.requestFocus();
btnAdd.setLabel("OK");
btnCancel.setEnabled(true);
btnDelete.setEnabled(false);
btnEdit.setEnabled(false);
public void Save()
if (txtInvID.getText().length() == 0 || txtModName.getText().length() == 0)
lblMessage.setText("The Inventory ID or Model Name is blank");
else
try
cmdEmployees.executeUpdate("Insert Into Vehicle"
+ "([InventoryID], [Manufacturer], [ModelName], [Year], [VehicleID], [CostValue])"
+ "Values('"
+ txtInvID.getText() + "', '"
+ txtMan.getText() + "', '"
+ txtModName.getText() + "', '"
+ txtYear.getText() + "', '"
+ txtVID.getText() + "', '"
+ txtCost.getText() + "')");
lstVehicle.add(txtInvID.getText());
Cancel();
catch(SQLException error)
lblMessage.setText("Error: " + error.toString());
public void Edit()
int intIndex = lstVehicle.getSelectedIndex();
if(intIndex == 0 )
lblMessage.setText("Please select the record to change");
else
String strInventoryID = lstVehicle.getSelectedItem();
try
cmdEmployees.executeUpdate("Update Vehicle "
+ "Set [InventoryID] = '" + txtInvID.getText() + "', "
+ "[Manufacturer] = '" + txtMan.getText() + "', "
+ "[ModelName] = '" + txtModName.getText() + "', "
+ "[Year] = '" + txtYear.getText() + "', "
+ "[VehicleID] = '" + txtVID.getText() + "', "
+ "[CostValue] = '" + txtCost.getText() + "' "
+ "Where [InventoryID]= '" + strInventoryID + "';");
if(!strInventoryID.equals(txtInvID.getText()))
lstVehicle.remove(intIndex);
lstVehicle.add(txtInvID.getText());
catch(SQLException error)
lblMessage.setText("Error during Edit. " + "Error: " + error.toString());
public void Delete()
int intIndex = lstVehicle.getSelectedIndex();
String strInventoryID = lstVehicle.getSelectedItem();
if(intIndex == 0)
lblMessage.setText("Please select the record to be deleted");
else
try
cmdEmployees.executeUpdate(
"Delete from Vehicle where [InventoryID] = '" + strInventoryID + "';");
clearTextFields();
lstVehicle.remove(intIndex);
lblMessage.setText("Record deleted");
catch(SQLException error)
lblMessage.setText("Error during Delete." + "Error: " + error.toString());
public void Cancel()
btnDelete.setEnabled(true);
btnEdit.setEnabled(true);
btnCancel.setEnabled(false);
btnAdd.setLabel("Add");
clearTextFields();
lblMessage.setText("");
lstVehicle.select(0);
public void stop()
try
if(conEmployees != null)
conEmployees.close();
catch(SQLException error)
lblMessage.setText("Unable to disconnect");
</code>

1) Applets that run in web browsers used to be "hip" in at one point in the dark 1990's. That time is forever gone and good riddance. Today big enterprise applications and sophisticated special purpose desktop applications are the Right Way™ to go with Java.
If you want action in your browser, look into Macromedia's Flash technology.
If you want to deploy your application easily in an applet-like fashion (one click from a browser), look into Java Webstart.
Demos: http://java.sun.com/products/javawebstart/demos.html
Documentation: http://java.sun.com/products/javawebstart/developers.html
2) It's a trivial task to write a launcher applet for any given application so that the applet starts the application in a new window. The security restrictions imposed on applets ("sandbox") might make it impossible to use the application; for instance you cannot write or read files on the local hard drive or make network connections to other servers than where the applet was loaded from. You cannot call System.exit to quit the virtual machine.
At its simplest the lancher applet code would look ilke:public class Launcher extends java.applet.Applet {
public void start() {
YourApplicatioMainClass.main(null);
}and in the html you would write:<applet code="Launcher" height="1" width="1">
</applet>See the "Writing applets" tutorial for further information http://java.sun.com/docs/books/tutorial/applet/index.html

Applet object

can i somehow get the refernce of the applet object which the browser creates.
i am writing a class which has to b deployed in a web server.
can i get the ref of the applet object which the browser makes on a client request
thanx in advance.
Pradnya

You mean you want to get a reference to an Applet instance on the server?
I would imagine that in the majority of environments this is not possible.
Could you provide more information about what you're trying to do?

Applet/object param name="legacy_lifecycle" value="true"/ documentation?

I've recently stumbled across this applet/object parameter as a solution to a problem. However I can't find the official documentation of it anywhere, and believe me I've looked. I did find a reference to it in some Oracle product documentation but nowhere in the Java Plugin or Deployment documents. Has anybody spotted it anywhere? Urban myth? Legend? It certainly seems to work.
Edited by: EJP on 6/03/2012 20:36: corrected typo in title

Searching an old jdk source download shows it is not used by Java per se.
$ pwd
/home/download/java/src/jdk-6u23-fcs-src-b05-jrl-12_nov_2010
$ find . -type f -exec grep -H legacy_lifecycle "{}" \;
deploy/src/plugin/share/classes/sun/plugin/AppletViewer.java:        String lifecycle = getParameter("legacy_lifecycle");
deploy/src/plugin/share/classes/sun/plugin2/applet/Applet2Manager.java:        String lifecycle = getParameter("legacy_lifecycle");
deploy/src/plugin/share/classes/sun/plugin2/applet/Applet2ManagerCache.java:if (appletParameters.get("legacy_lifecycle") == null)
deploy/src/plugin/share/classes/sun/plugin2/test/LegacyTest2AppletFrame.html:Legacy Lifecycle Automated Test #2 -- two legacy_lifecycle applets on the same page
deploy/src/plugin/share/classes/sun/plugin2/test/LegacyTest2AppletFrame.html:<param name="legacy_lifecycle" value="true"></param>
deploy/src/plugin/share/classes/sun/plugin2/test/LegacyTest2AppletFrame.html:<param name="legacy_lifecycle" value="true"></param>
deploy/src/plugin/share/classes/sun/plugin2/test/LegacyTestAppletFrame1.html:Legacy Lifecycle Automated Test #1 -- two legacy_lifecycle applets in different frames
deploy/src/plugin/share/classes/sun/plugin2/test/LegacyTestAppletFrame1.html:<param name="legacy_lifecycle" value="true"></param>
deploy/src/plugin/share/classes/sun/plugin2/test/LegacyTestAppletFrame2.html:<param name="legacy_lifecycle" value="true"></param>
deploy/src/plugin/share/classes/sun/plugin2/test/liveconnect/LegacyLifecycleLiveConnect.html:Tests LiveConnect against a legacy_lifecycle applet. Reload and switch
deploy/src/plugin/share/classes/sun/plugin2/test/liveconnect/LegacyLifecycleLiveConnect.html:    <param name="legacy_lifecycle" value="true">
$

Cannot Acccess Applet Object from Java Script

Hi,
I am using jRE1.5, and Kava Chart Applets. Those applet jars are compiled in jdk 1.5 version. I have created one jsp where I used ,<applet> tag. The problem is when ever I am going to access the applet object from java script it is not returning the actual java applet object, when put an alert message it shows [object]. So i am not able to access the methods or the applet class.and also the screen gets hung, nothing is coming.It get stuck at the point where i tried to access the applet method like document.getElementById(applet_id).<<<some method of the applet class>>.Also it is not showing any kind of javascript error or Applet class exceptions.
But the strange thing is, when i use jdk 1.6, the page is running fine.Also when i try to print the applet object from javascript it is showing the proper class name.
Please help me solving the problem.

A number of changes and improvements were made between 1.5 and 1.6 - the entire plugin is new. You need to change to 1.6, as 1.5 goes EOL about November this year and future changes to this area in 1.5 are unlikely.

Could not get schema Object:java.sql.SQLSyntaxErrorException ora-904

All of a sudden I get
Could not get schema Object:java.sql.SQLSyntaxErrorException: ORA-00904: "SYS"."O"."NAME": ongeldige ID
when doing anything in the tables tree in the connections pane
The only thing I set recently is pga_aggregate_target
Environment
Oracle 11.2.0.1
OS Windows Vista Ultimate sp2
Sql developer 2.1.1.64.39 with its own JDK
As the download links on OTN are broken I can not upgrade, and I'd rather not work in command line sqlplus.
Help!!!
Sybrand Bakker
Senior Oracle DBA

My copy of sqldeveloper isn't located in that directory. Would that matter?
In the mean time I have disabled filtering the tables node. Opening the tables node doesn't result in exceptions anymore.
Now, when I click on any table in that node I get 4 identical ora-904 error messages for sys.o.name for any table.
Apparently it is querying either the all_objects view and it thinks it is querying sys.obj$.
I didn't yet enable sql_trace for the session, I'm more or less giving up on sqldeveloper. I can not use the space bar in any datagrid, sqldeveloper has always been extreemly unresponsive when navigating the schema browser (as opposed to Toad), etc, etc. Too bad I bought Sue Harpers book, but I think I will be de-installing sqldeveloper soon.
Sybrand Bakker
Senior Oracle DBA

Getting Duplicate Object existing issue while deploying the BIAR file

Hi All,
We are trying to deploy BIAR File with XI R2 Command tool InstallEntSdkWrapper. But we are getting Duplicate Object exixting issue while deploying the BIAR file.
Error Message:
[report] [InstallEntSdkWrapper.main] Connecting to CMS plmdevapp31:6400 as administrator
   [report] [InstallEntSdkWrapper.CmsImportFile] Exception: An error occurred at the server :
   [report] Failed to commit objects to server : Duplicate object name in the same folder.
   [report]
   [report] [InstallEntSdkWrapper.main] BIAR File could not be imported
If we are doing any promition with Import Wizard we have an option to "Overwrite object contents" option to overwite exixting objects. It will very helpful if any one suggest how we can achieve this through InstallEntSdkWrapper.
Unfortunately there is no documentation availabe on InstallEntSdkWrapper.
Cheers!

That's a limitation with the XI Release 2 InstallEntSdkWrapper.jar tool.
Sincerely,
Ted Ueda

How to get the object class field value in CDHDR table for vendor

hi
how to get the object class field value in CDHDR table for vendor

Try KRED/KRED_N as object class in CDHDR for Vendor.

Web Dynpro Java : Failed to get deployable object part info for component

Currently we have a web dynpro java project which connects to the ABAP backend with Web Services. Everything seems fine, and when we transport to the production server via NWDI, we have the following error. Everytime we try to access the application , the error is occurred.
com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Failed to get deployable object part info for component com.sie.attachmentcomp.AttachmentComp
    at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.getComponentDeploymentDescription(ClientComponent.java:784)
    at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.createComponent(ClientComponent.java:934)
    at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.createComponent(ClientComponent.java:177)
    at com.sap.tc.webdynpro.progmodel.components.ComponentUsage.createComponentInternal(ComponentUsage.java:149)
    at com.sap.tc.webdynpro.progmodel.components.ComponentUsage.createComponent(ComponentUsage.java:116)
It is working properly in our development , and testing environment. Only production has this error. And one weird thing is that this particular error occurred only sometimes to some user. For example; I could not access to the application with this error yesterday but my friend can access. Today, I can access in the morning but my friend cannot. For another friend , Yesterday he can access by using IE but not by Firefox. But today Firefox is fine but not with IE. It seems crazy.
For more information, in our J2EE engine for the production server, we have 3 server nodes (clusters). And we are not sure it is the source of the problem. Is there any solution , and any way to know from the application that we are on which server?
We also go and check from the Content Administrator in Web Dynpro Console. Under our project name, in the list of Components, sometimes we can see AttachmentComp but sometimes not.
Please help us as our project is about to go-live next week.
Thanks,
Yu

Hi Meenge,
Please check below document for finding root cause for "Failed to start deployable object part info for <development component> and application <application name>"
http://help.sap.com/saphelp_nwce711core/helpdata/en/44/7716e1633a12d1e10000000a422035/frameset.htm
OR http://help.sap.com/saphelp_nw04/helpdata/EN/f4/1a1041a0f6f16fe10000000a1550b0/frameset.htm
Hope it helps
Regards
Arun

Get JSF objects in a Filter Class

Hi! I have a problem with my JSF application. As the most of the web applications I have a login at the begining and I place a Listener - Filter classes for catching the session timeout to returning the user to the login page. All this works OK. The problem it´s to validate that the user only has 1 session open at the time, when the user begin session I change a flag into it's database row, and when the user logout the flags change again to false (both actions (login and logout) was fired by the user clicking it's respective buttons), this works fine, but I want to change the data flag in the database row with the timeout Filter classes after pass 1 minute. My Filter class it's like this:
    public void doFilter(ServletRequest request,ServletResponse response, FilterChain filterChain) throws IOException,ServletException {
        if ((request instanceof HttpServletRequest) && (response instanceof HttpServletResponse)) {
            HttpServletRequest httpServletRequest = (HttpServletRequest) request;
            HttpServletResponse httpServletResponse = (HttpServletResponse) response;
            if (!StringUtils.contains(httpServletRequest.getRequestURI(), "welcomeJSF.jsp")) {
                if((httpServletRequest.getRequestedSessionId() != null) && !httpServletRequest.isRequestedSessionIdValid()){
                     /* 1 */
                       FacesContext context = FacesContext.getCurrentInstance();
                         User user = (User) context.getExternalContext().getSessionMap().get("simpleUser");
                         UserDAO conn = new UserDAO();
                         List users = conn.findByNumber(new Long(user.getNumber()));
                         persistence.User userDB = (persistence.User) users.get(0);
                         userDB.setUse(false);
                         Transaction tx = conn.getSession().beginTransaction();
                         conn.save(userDB);
                         tx.commit();
                         conn.getSession().close();
                         /* 2 */
                    String timeoutUrl = httpServletRequest.getContextPath()+ "/faces/" + "welcomeJSF.jsp";
                    System.out.println("Session is not invalid. Redirecting to login page. ");
                    httpServletResponse.sendRedirect(timeoutUrl);
                    return;
        filterChain.doFilter(request, response);
    }When I comment from 1 to 2 works fine, but if I want to get the context.getExternalContext().getSessionMap().get("simpleUser") i get this error:
java.lang.NullPointerException
     at validadores.SessionTimeoutFilter.doFilter(SessionTimeoutFilter.java:53)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Thread.java:619)This is because I'm working in a diferent conexts? How can I get Jsf objects from ServletRequest? or to pass getExternalContext().getSessionMap() to the filter class? Any ideas to change the database when the session timeouts if I'm using hibernate?
Thanks for your time and help!

correction :
MyObjectProxy extends ObjectProxy{
     override callProperty(
          // your dyna logic
and expose new MyObjectProxy(dynaInstance)

Get Applet object

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