Cant load an applet in a JSP under tomcat localhost

Hi, i am currently running tomcat 5.5. I load a jsp with an applet plugin on the host machine and it runs fine but when I try to connect to tomcat server from another pc he jsp loads but the applet does not. I get the following error.
java.lang.NoClassDefFoundError: org/jfree/data/category/CategoryDataset
     at java.lang.Class.getDeclaredConstructors0(Native Method)
     at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
     at java.lang.Class.getConstructor0(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(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)

<html>
   <head>
      <title>Wireless Sensors</title>
   </head>
   <body>
      <jsp:plugin type = "applet"
         code = "Charts" archive="jfreechart-1.0.4.jar, jcommon-1.0.8.jar, mysql-connector-java-3.0.10-stable-bin.jar, substance.jar"
         width = "980"
         height = "580">
         <jsp:params>
            <jsp:param name = "red" value = "255" />
            <jsp:param name = "green" value = "255" />
            <jsp:param name = "blue" value = "0" />
         </jsp:params>
      </jsp:plugin>
   </body>
</html>If more detail is needed i can supply it no problem. I think the problem is when accessing the localhost from another PC the jar files I am using can not be seen. I am lost if anybody can help

I have never seen anyone do this where it turned out to be a good idea. That said...
1. Application servers usually don't allow extraneous files to be placed in the application root. they will generate a security exception in the app server when trying to load.
2. Applets can only access the server they were loaded from. If the app server uses the page 10.1.1.2 and you are using www.myserver.com as the codebase, it won't work.

Similar Messages

How can i load a applet in a jsp page

hi ,
i am chiranjit , i am working in a jsp project . i want to load a applet in a jsp page.previously i had tried this one through <jsp:plugin> but when it goes in cross platform this page unable to load the applet from the serverside.
if have any solution then pls send the solution in forum.
thank you.
chiranjit

I never tried this... but doesn't the normal html <applet> tag work?

How do I load an applet in a JSP?

i have coded an applet in a JSP, the page loads without any errors, but I am not able to view the applet. Any clues? thanks in advance

I have never seen anyone do this where it turned out to be a good idea. That said...
1. Application servers usually don't allow extraneous files to be placed in the application root. they will generate a security exception in the app server when trying to load.
2. Applets can only access the server they were loaded from. If the app server uses the page 10.1.1.2 and you are using www.myserver.com as the codebase, it won't work.

Debug applet embedded in jsp using tomcat and eclipse

I am trying to debug applet embeded in jsp. I have deployed my application on tomcat.
The steps I followed
1. Added JVM rumtime parameters in Java plugin control panel
-Djava.compiler=NONE -Xnoagent -Xdebug -Xrunjdwp:transport=dt_socket,address=localhost:8000,suspend=n
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Personally, I have no knowledge about Applet but have you checked this link?
[http://blogs.sun.com/thejavatutorials/entry/deployment_toolkit_101|http://blogs.sun.com/thejavatutorials/entry/deployment_toolkit_101]

How to upload image using JSP under Tomcat

Hi,
I want to write a piece of code, which can upload the local image files to the server, also, the user can view the image by click the image name. I use jakarta_tomcat_.1.xx. Can anyone give me some reference about image transfer?
Thanks a lot!
Junmin

do a search for "JSP file upload" and you should find lots of information.

ClassFormatError when attempting to load an applet from within a JSP

Greetings everyone.
I have a problem that i seem unable to solve.
I've created a web application. I'm using Java 1.4.2_05 and Tomcat. Right now i'm trying to load an applet from a JSP and i'm getting an error that, try as i might, i can't understand why it happens.
Here is some detailed info:
The applet's code:
package smpb.myapp.controllers;
import java.applet.Applet;
import java.awt.Graphics;
public class GUIApplet extends Applet
     public void init()
     public void stop()
     public void paint(Graphics g)
              g.drawString("Hey hey hey",20,20);
           g.drawString("Hellooo World",20,40);
The JSP's code:
<%@ page language="java"
               import="java.util.*"
               session="true" %>
<%
     String name = (String) request.getSession().getAttribute("userName");
%>
<html>
     <head>
          <title>Login</title>
     </head>
     <body>
          <h1><p align="center">Application</p></h1>
          <br>
          Welcome <%= name %>! Thank you for logging in!
          <br><br><br>
          <applet align="middle" code="smpb.myapp.controllers.GUIApplet.class" codebase="./" archive="MyApp_applets.jar">
               Your browser does not support this feature.
          </applet>
          <br><br>
          <a href='<%=request.getContextPath() + "/LogOut"%>'>Log Out</a><br>
     </body>
</html>-------------------------------------------
When i reach this JSP the applet fails to load and i get the following error message at the java console:
Loading applet ...
Initializing applet ...
Starting applet ...
Connecting http://127.0.0.1/MyApp/MyApp_applets.jar with no proxy
Connecting http://127.0.0.1/MyApp/MyApp_applets.jar with cookie "JSESSIONID=A8EECE5E39458739C760D8907762C507"
Last modified time and/or expiration value is not available. Jar file will not be cached.
Connecting http://127.0.0.1/MyApp/MyApp_applets.jar with no proxy
Connecting http://127.0.0.1/MyApp/MyApp_applets.jar with cookie "JSESSIONID=A8EECE5E39458739C760D8907762C507"
Connecting http://127.0.0.1/MyApp/smpb/myapp/controllers/GUIApplet.class with no proxy
Connecting http://127.0.0.1/MyApp/smpb/myapp/controllers/GUIApplet.class with cookie "JSESSIONID=A8EECE5E39458739C760D8907762C507"
Last modified time and/or expiration value is not available. Jar file will not be cached.
Connecting http://127.0.0.1/MyApp/smpb/myapp/controllers/GUIApplet.class with no proxy
Connecting http://127.0.0.1/MyApp/smpb/myapp/controllers/GUIApplet.class with cookie "JSESSIONID=A8EECE5E39458739C760D8907762C507"
java.lang.ClassFormatError: smpb/myapp/controllers/GUIApplet (Bad magic number)
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
     at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:157)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
     at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:123)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
     at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:561)
     at sun.applet.AppletPanel.createApplet(AppletPanel.java:617)
     at sun.plugin.AppletViewer.createApplet(AppletViewer.java:1856)
     at sun.applet.AppletPanel.runLoader(AppletPanel.java:546)
     at sun.applet.AppletPanel.run(AppletPanel.java:298)
     at java.lang.Thread.run(Thread.java:534)
Exception: java.lang.ClassFormatError: smpb/myapp/controllers/GUIApplet (Bad magic number)-------------------------------------------
The JSP is in the root directory of the web application's path right along with the jar file. The jar file itself has the following structure:
Archive: HelpDesk_applets.jar
Length     Date   Time    Name
        0 05-17-06 12:17   META-INF/
      106 05-17-06 12:17   META-INF/MANIFEST.MF
        0 05-10-06 17:14   smpb/
        0 05-10-06 17:14   smpb/myapp/
        0 05-12-06 16:50   smpb/myapp/controllers/
      794 05-12-06 17:15   smpb/myapp/controllers/GUIApplet.class
      900                   6 filesNow, i've tried loading the very same jar file that i use in the JSP through a static HTML which is virtually identical to the JSP i presented and everything works just fine. I've checked and rechecked to see if all the permissions to access the jar file were accurate, i checked to see if Tomcat had it's MIME settings correctly configured so that there was no chance that the files were being corrupted during the load (as that is a usual cause for the problem, or so i've gathered) but to no avail. I've searched the web, including these forums, and found similar problems but no conclusive solution. I can't seem to figure out, at all, what could possibly be wrong. Does anyone have any ideas? I've tried to be as thorough as i could from the start, so, any help would be deeply appreciated.

Hi mshah101,
This can happen if the applet is compiled using an higher version of java and the browser is pointing to an older version (even if minor version number is higher)

Trouble with an applet on a jsp page

hi, thanx for readin it!
im developing a webapp tha have some swing applets , the problem is that the applets dont work, they appear but dont play anything, i use the jsp:plugin to load the applets on the jsp, i also have instaled the java plugin on my win xp pc, i use tomcat 5. well i hope you can help me

were are the applet classes? under WEB-INF? If so, then they shouldn't be as the server won't server files under that directory and the browser needs them

Unable to load Applet in JSP using Tomcat 5.5.12

Hi
I am aunable to applet in jsp using Tomcat 5.5.12 and JRE 1.5. Below is the code that I am using
                                   <applet
                                   codebase = "."
                                   archive = "WebPOSApplet.jar"
                                   code = "webposprint.WPMainApplet.class"
                                   name = "Trans Applet"
                                   width = "450"
                                   height = "115"
                                   hspace = "0"
                                   vspace = "0"
                                   align = "middle"
                                   >
<param name = "redirectInfo" value = "SearchProducts.do">
                                   </applet>
<%/*%>
<OBJECT
                                   classid = "clsid:CAFEEFAC-0014-0002-0000-ABCDEFFEDCBA"
                                   codebase = "http://java.sun.com/products/plugin/autodl/jinstall-1_4_2-windows-i586.cab#Version=1,4,2,0"
                                   WIDTH = 450 HEIGHT = 115 >
<PARAM NAME = CODE VALUE = webposprint.WPMainApplet.class>
<PARAM NAME = archive VALUE = WebPOSApplet.jar>
<PARAM NAME = "type" VALUE = "application/x-java-applet;jpi-version=1.4.2">
<param name = "redirectInfo" value = "SearchProducts.do">
<PARAM NAME = "scriptable" VALUE = "false">
<PARAM NAME = model VALUE=models/buckminsterfullerine.xyz>
<embed width="450" height="115" code="webposprint.WPMainApplet.class" archive="WebPOSApplet.jar" type="application/x-java-applet;jpi-version=1.4.2" redirectinfo="SearchProducts.do" scriptable="false" model="models/buckminsterfullerine.xyz" src="webposprint.WPMainApplet.class">
</embed> <COMMENT> <EMBED
                                   type = "application/x-java-applet;jpi-version=1.4.2" \
                                   CODE = webposprint.WPMainApplet.class\
                                             archive = WebPOSApplet.jar\
                                   WIDTH = 373 \
                                   HEIGHT = 167 \
                                   model =models/buckminsterfullerine.xyz \
                                        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> </COMMENT>
</OBJECT>
<%*/%>
This code doesn't seems working with Tomcat 5.5.12. I works fine with Tomcat 4.1.31
Please help
Thanks

Applets run client side - which means the relevant class files need to be downloaded to the client.
Anything under the WEB-INF directory is not directly accessible by the client. Nothing under WEB-INF can be downloaded.
ergo, specifying the WEB-INF directory as part of your applet codebase is a bad idea.
I would suggest try copying the applet classes from under WEB-INF to some other place in your application.
Also, you should probably specify the full class name of your Applet in the plugin tag.
<%@ page import="com.util.MyApplet" %>
<jsp:plugin type="applet" code="com.util.MyApplet" codebase="/classes" width="250" height="100" jreversion="1.6">
     <jsp:fallback>
          <B>Unable to start plugin!</B>
     </jsp:fallback>
</jsp:plugin>cheers,
evnafets

Loading an applet in tomcat 4.x

Hi,
I have been reading the forums for a while trying to find an explanation to the problem I am having with no success.
The problem is that I have an applet that has a dynamic number of parameters. The number of parameters is determined by the contents of an application bean which is part of the environment.
The problem is that I can't get the applet to work using the <applet> tag. It seems that no matter what I set the codebase parameter to, I always get the dreaded "ClassDefNotFound Exception: FacilityApplet" in IE 6.0 or "ClassFormatError: Bad Major Version Number" exception in Netscape 4.79.
I am using JDK 1.4_0_01 and Tomcat 4.1.12 and my application (oam), context is organized as follows:
webapps/
oam
WEB-INF
classes
lib
applets
facility
jsp
html
index.html
I have jarred the applet into a file called FacilityApplet.jar and stored it into the oam/applets/facility directory. The contents of the jar file follows:
META-INF/
META-INF/MANIFEST.MF
FacilityApplet.class
common/DataEvent.class
common/Facility.class
common/Link.class
DialogBox/
DialogBox/DialogBox$CloseDialog.class
DialogBox/DialogBox$CloseWindow.class
DialogBox/DialogBox.class
The following is the contents of my jsp page that attempts to load the applet.
<html>
<head>

<meta HTTP-EQUIV=Pragma CONTENT=no-cache >
<title> Status Page </title>
</head>
<%@ page import="javaBeans.SettingsBean" %>
<jsp:useBean id="settings" class="SettingsBean" scope="application" />
<body BGCOLOR="honeydew" LINK="Blue" TEXT="black" VLINK="Red">
<h1>
Application Status
</h1>
<%
// Make sure we have a good bean to work with
if (settings.getTotalFacilities() != 0) {
%>
<applet
archive="FacilityApplet.jar"
codebase="http://localhost:8080/oam/applets/facility"
code="FacilityApplet.class"
width="300" height="150" >
<param name="PORT" value="8939" >
<%
for (int i = 0;i < settings.getTotalFacilities();i++) {
%>
<param name="FAC_<%= i %>" value="<%= settings.getFacilityName(i) %>">
<param name="STATE_<%= i %>"
value="<%= settings.getFacility(i).getState() %>">
<% } %>
</applet>
<% }
else {
%>
<h2 align="center"> No Facilities to Display </h2>
<% } %>
</body>
</html>
Here are the values for codebase that I have tried so far:
codebase="<%= request.getContextPath() %>/applets/facility"
codebase="http:localhost:8080/oam/applets/facility"
codebase="../applets/facility"
I also expanded the jar file under the applets/facility directory with the same results. I also copied all the class files in the same directory as my jsp file, codebase="facility", with the same results.
Now, if I use the <jsp:plugin> tag the applet loads with no problems using codebase="<%= request.getContextPath() %>/applets/facility", but that does not allow me to set my applet parameters dynamically. It works fine if I hardcode my parameters inside the <jsp:param> tag. However, I can explain this since it will require the JSP compiler to do multiple passes over the source code, and I don't think it does that.
My PC has the latest version of the JRE plugin 1.4.X.
Any help will be greatly appreciated.
Maizo

Folks,
I hate to follow up my own posting but I figured out the problem. My browser was using its own JVM, which of course was an old one.
Sorry to waste these resources
Maizo

Facing the problem in loading the applet in mozilla, Firefox and netscape

Dear sir,
Well I am facing the problem regarding loading of applet in firefox,mozilla and netscape. Its working fine in IE6 I have the samplecode which asks for jdk1.4 whenever the applet gets loaded in IE6 and also it works fine for every browser but he is asking jre for every time whenever the page gets loaded even if the jre is installed. I need a code such that it should ask only if the jre is not installed. One more thing is it so that for mozilla or netscape the jre installation files are different.
pls give the solution.
Well I am also facing the problem like when I load login page of my applicatoin in netscape or firefox
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Awating for your reply.
Rgs
sumeet.

Issue resolved with the help of ABAP.
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How to load an applet in different folder??

Hello, (sorry about my english, I speak spanish)
I have an applet in :
E:/ProyectosPrueba/testJSP/classes/testjsp/AppletConfig.class
and I have a Page JSP (that call it (the applet)) in:
E:/ProyectosPrueba/testJSP/jspConnectApplet.jsp
inside this page I have the tag:
<APPLET
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I works in JBuilder 5.0 and inside it, this works well, but when
I attempt to do this in Internet Explorer doesn't load the applet
the error is :
java.lang.ClassNotFoundException: testJSP.AppletConfig
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Try to write the path to the applet after "codebase". Maybe it will help.
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/A

Applet embedded in JSP doesn't run on browser with older than JRE-1.6

I have embeded an Applet in my JSP Page which used JDK1.6's getHardwareAddress() method to get user's physical address.
I have embeeded this into a JAR file and used it in my JSP where this applet run on onload() event of the form --> runs the applet --> and gets physical address of user machine and prints it in one of the text boxes on the form.
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Personally, I have no knowledge about Applet but have you checked this link?
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</frameset>
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is it possible to write jsp code or javascript code inside this Login.jsp ?
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veera

Problem in calling applet function in jsp

When i am trying to load Java applet through jsp, i get this error :
Java Plug-in 1.6.0_02
Using JRE version 1.6.0_02 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\pankajb
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
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l: dump classloader list
m: print memory usage
o: trigger logging
p: reload proxy configuration
q: hide console
r: reload policy configuration
s: dump system and deployment properties
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v: dump thread stack
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load: class CAppletDisplay.class not found.
java.lang.ClassNotFoundException: CAppletDisplay.class
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     at sun.applet.AppletClassLoader.loadClass(Unknown Source)
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     at sun.applet.AppletClassLoader.loadCode(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
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     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
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load: class CAppletDisplay.class not found.
java.lang.ClassNotFoundException: CAppletDisplay.classthat means that client jre didn't find the CAppletDisplay class.
make sure that you put this class in the right directory.

Firefox cant load any website

''locking this thread as duplicate, please continue at [https://support.mozilla.org/en-US/questions/1039792 /questions/1039792]''
I diwnloaded firfox on my HTC ONE but cant load any page it keeps saying cant find server but other website can like chrome, uc browser and dolphdolphine all work fine

Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache.
The Firefox cache temporarily stores images, scripts, and other parts of websites while you are browsing. <br>
Note: ''This will temporarily log you out of all sites you're logged in to.''
To clear cache and cookies, do the following:
#Tap the menu icon located at the top right corner. This is the icon with 3 bars. On older Android devices you'll have to press the hardware menu key and then tap More.
#Tap '''Settings'''.
#After that, you will be taken to the settings screen. In the settings screen, look under the section '''''Privacy & Security''''' and select '''Clear private data'''.
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#*Cookies & active logins
#*Cache
#After those have been selected, tap the '''Clear data''' button to actually clear the cache and cookies.
Please also considering reinstalling Firefox for Android from the Google Play store.
Did this help you with your problems? Please let us know!

Cant load an applet in a JSP under tomcat localhost

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