How do I unblock Java applet

Installed new version of Java. Now Safari Blocks Java applet for Yahoo Games I've tried Sys preferences and Safari preferences Would value suggestion on how to unblock

In the address bar you should see a plugin icon that looks like a "lego". If you click on it you will see buttons to "Allow" or "Allow and Remember". See this article for a screenshot and more information:
*[[How to allow Java on trusted sites]]
Does that solve the problem?

Similar Messages

How to sign a java applet using iPlanet SSL certificate?

Dear all,
I have a IPlanet web server with SSL installed,
can I use the SSL certificate to sign my java applet which will run on the server? how to sign a java applet in this scenario? somebody please help me! thanks!
yours sincerely
dashel

Why can't you create jar files?

How to put my java applet application inside a browser

currently I have a java applet appilcation but it pops-out outside the browser. does anyone can show me how to embed it on my browser

make an html file like this inside the same folder as your .class files
<html>
<body>
<p align = center><applet code ="Main.class" width=500 height=300>
</applet></p>
</body>
</html>width and height have to be within the resolution of your screen

How can I enable java applet plug-in and Web Start applications via terminal?

Since the last Java update to Snow Leopard, I have found that the system periodically disables the Java applet plug-in after a period of disuse. I know I can go to /Applications/Utilities/Java Preferences and just click to re-enable Java. But I want to write a script which will do this periodically for a couple hundred Mac users where I work.
My question is - how can I reenable the Java applet plug-in and web start applications via Terminal command? Is this possible? Is there a plist file that can be modified, etc.?
Bob Reed

It is my understanding that Apple's most recent Java update automatically disables Java after a certain period of time that it hasn't been used. We don't want users to have to keep re-enabling it. So we wanted to find a way to do this via script either run by a Casper JSS server or stored locally on each workstation.   With the guidance provided by Mark Jalbert above and some text from a script written by Rich Trouton, I was able to make a script (with some minor changes) and a launch agent to re-run the script upon login. So the preference is always enabled.
For your reference, the script content is:
#!/bin/sh
# DYNAMICALLY SET THE UUID FOR THE BYHOST FILE NAMING
if [[ `ioreg -rd1 -c IOPlatformExpertDevice | grep -i "UUID" | cut -c27-50` == "00000000-0000-1000-8000-" ]]; then
MAC_UUID=`ioreg -rd1 -c IOPlatformExpertDevice | grep -i "UUID" | cut -c51-62 | awk {'print tolower()'}`
elif [[ `ioreg -rd1 -c IOPlatformExpertDevice | grep -i "UUID" | cut -c27-50` != "00000000-0000-1000-8000-" ]]; then
MAC_UUID=`ioreg -rd1 -c IOPlatformExpertDevice | grep -i "UUID" | cut -c27-62`
fi
# Set the the "Enable applet plug-in and Web Start Applications" setting in the Java Preferences for the current user.
/usr/libexec/PlistBuddy -c "Delete :GeneralByTask:Any:WebComponentsEnabled" /Users/$USER/Library/Preferences/ByHost/com.apple.java.JavaPreferences.${MAC_UU ID}.plist
/usr/libexec/PlistBuddy -c "Add :GeneralByTask:Any:WebComponentsEnabled bool true" /Users/$USER/Library/Preferences/ByHost/com.apple.java.JavaPreferences.${MAC_UU ID}.plist
/usr/libexec/PlistBuddy -c "Delete :GeneralByTask:Any:WebComponentsLastUsed" /Users/$USER/Library/Preferences/ByHost/com.apple.java.JavaPreferences.${MAC_UU ID}.plist
/usr/libexec/PlistBuddy -c "Add :GeneralByTask:Any:WebComponentsLastUsed real $(( $(date "+%s") - 978307200 ))" /Users/$USER/Library/Preferences/ByHost/com.apple.java.JavaPreferences.${MAC_UU ID}.plist
The launch agent plist content is:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
          <key>Disabled</key>
          <false/>
          <key>Label</key>
          <string>org.XXXXX.enableJavaPlugin</string>
          <key>ProgramArguments</key>
          <array>
                    <string>sh</string>
                    <string>/Library/Scripts/XXXXX/enableJava_plugin.sh</string>
          </array>
          <key>RunAtLoad</key>
          <true/>
          <key>StartOnMount</key>
          <true/>
</dict>
</plist>
I hope this is helpful to anyone wishing to keep the Java web plugin enabled.
Bob
Message was edited by: Robert Reed2

How can I unblock Java 7.55 on Firefox 29?

Working with a training site that requires Java. I have the latest Java Runtime build (7-55), Firefox blocks seem to be noted specifically on builds 25 to 44, but maybe later builds as well. My build is blocked.
I've tried an article that describes unblocking on a trusted site, but cannot find how to get the Java icon into the address bar to access unblock options.
Compaq Presario running XP, 2.2 GB memory, 500 GB disk space, ADSL2+ connection to supplier.
The base problem is delay and distortion of sounds in games designed to measure reflex speed, and Java being blocked is the only incompatibility I can find with published requirements.

Thanks for trying, Jaya.
The option "Always Activate" is not offered, only a choice between "Ask to Activate" which seems ineffective, and "Never activate".
Attached is a copy of the screen I think is involved.

How do I get Java Applets working on FF4 Mac?

My website's photo upload applet uses Java to upload, and ever since FF4 beta releases, all the way up to the final, I get a missing plugin error. This error is ONLY on FF, it works on chrome and safari.
Screenshot:
http://img23.imageshack.us/i/javad.png/
Clicking manual install goes to:
http://www.oracle.com/technetwork/java/javase/download-138376.html
So in other words, the manual install is pointless.
How can I get these applets working?

PS. I'm downgrading till this is fixed. FF4 is useless to me without this ability. I always liked FF for the better upload ability over Safari and Chrome, so I'd love to be able to use it. :-)

How to run a Java applet on a website.

Hi,
I am trying to run the code below [DrawLines.java|http://www.dgp.toronto.edu/~mjmcguff/learn/java/01-drawingLines/]
import java.applet.*;
import java.awt.*;
public class DrawingLines extends Applet {
   int width, height;
   public void init() {
      width = getSize().width;
      height = getSize().height;
      setBackground( Color.black );
   public void paint( Graphics g ) {
      g.setColor( Color.green );
      for ( int i = 0; i < 10; ++i ) {
         g.drawLine( width, height, i * width / 10, 0 );
on my website . I compiled it using JDK1.6.0_21 on Windows 7 and generated DrawingLines.class (My site is hosted on a linux server, is this an issue since it was compiled on Windows?)
I created a html file:
<applet width=300 height=300 code="/shanegibney/classes/DrawingLines.class"> </applet>Then I created a new folder called 'classes' in my public directory.
I get the following error:
java.lang.NoClassDefFoundError: /shanegibney/classes/DrawingLines (wrong name: DrawingLines)
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClassCond(Unknown Source)
     at java.lang.ClassLoader.defineClass(Unknown Source)
     at java.security.SecureClassLoader.defineClass(Unknown Source)
     at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Exception: java.lang.NoClassDefFoundError: /shanegibney/classes/DrawingLines (wrong name: DrawingLines)I'm sure adding a java applet is very common. Does anyone have any ideas why this isn't working? It can be seen here .
Any help would be greatly appreciated,
Thanks,
Shane
Edited by: ofey on Jul 9, 2010 4:21 PM

I believe it's interpreting some of the code attribute as a path. Try this:
<applet width=300 height=300 codebase="/shanegibney/classes/" code="DrawingLines"> </applet>

How to maximize the java applet?

Dear all,
I have an application & when ever i run it, the java applet never comes in a maximum size. so is there a way to make it run in a maximum size?
best regards,
Ashraf

so but htese two lines in the new_form_instancse trigger
SET_WINDOW_PROPERTY(FORMS_MDI_WINDOW,WINDOW_STATE,MAXIMIZE);
SET_WINDOW_PROPERTY('WINDOW1',WINDOW_STATE,MAXIMIZE);
good luck

How to retain the java applet generated code when back button is pressed!!

I've a jsp page in which i've wirtten the code which specifies the word which i write in the text box, then through the applet i'm showing the word which is written in the text box. It means my applet is running and it show the words which i've written in the text box. Now when i click on submit it goes to the next page and when i click on browser's back button then except the applet generated code everyone retains its values. Is there any way to find it out when it encounter the back button click then applet should be restarted. so in this way without writing the whole application form and in the applet generated code i can submit it again.
My question is how do i reatin the applet generated code when a click button is being pressed (b'coz for the textbox, textareas everything retains it)
any suggestions or guidance are most welcome.
thanks in advance....

you don't need to navigate explicitly. Just clear the back stack till your specific page and say goback. below is the code you can use.
protected override void OnBackKeyPress(System.ComponentModel.CancelEventArgs e)
e.cancel=true;
RemoveBackStackTillSpecificPage("page2.xaml");
GoBack();
public static void RemoveBackStackTillSpecificPage(string pageName)
PhoneApplicationFrame frame = Application.Current.RootVisual as PhoneApplicationFrame;
var previousPage = frame.BackStack.FirstOrDefault();
if (previousPage != null && previousPage.Source != null)
while (!previousPage.Source.ToString().Contains(pageName))
frame.RemoveBackEntry();
previousPage = frame.BackStack.FirstOrDefault();
public static void GoBack()
PhoneApplicationFrame frame = Application.Current.RootVisual as PhoneApplicationFrame;
LastPageUri = frame.Source;
frame.GoBack();
Please mark this as answer if this answers your question
Purushothama V S

How to make a Java Applet work beyond proxy?

Hi All,
I have problems with my applet working through proxy.I am using a client applet which makes a socket connection to a Java application running on the same pc as the web server.
Everything works fine when I am directly connected.However it does't work when connected through a proxy? I am using object o/p & i/p streams for the exchange of data b/w client applet & the server java application.How do I overcome this problem.
Currently I am using WinGate 3.0.2 as my proxy(I did't see any firewaal setting there) but I intend to make applet work through any proxy for that matter.Using a higher level protocol such as UDP would help in this regard?
This is urgent.PLease reply ASAP...
best rgds,
prithvi

Try to use http, i don't thing direct open the socket can pass throught the socket if your proxy haven't forward those ports~
Hi All,
I have problems with my applet working through
gh proxy.I am using a client applet which makes a
socket connection to a Java application running on the
same pc as the web server.
Everything works fine when I am directly
ly connected.However it does't work when connected
through a proxy? I am using object o/p & i/p streams
for the exchange of data b/w client applet & the
server java application.How do I overcome this
problem.
Currently I am using WinGate 3.0.2 as my proxy(I
(I did't see any firewaal setting there) but I intend
to make applet work through any proxy for that
matter.Using a higher level protocol such as UDP would
help in this regard?i think UDP/TCP is not the matter for that!
This is urgent.PLease reply ASAP...
best rgds,
prithvi

How do I integrate Java Applet and JavaScript?

Hi:
This has been asked before, I have read the archives, yet I'm still left with some doubts, and some posts are VERY old and may not apply today. (sorry, some questions might seem stupid, this is my first applet). The purpose is to create a light weight application for managing certificates stored on a smart card, requesting certificate renewal from a server and installing the issued certificate on the card.
I need to create an applet (signed) to bridge the gab caused by the security limitations of JavaScript in order to access the smart card on the client. The applet will manage certificates on the card and do client-card interaction, while all client-server and user interaction is done by AJAX/JavaScript.
So, the applet is actually supposed to be an invisible object embedded on the page that is accessed by the JavaScript. How do I go about this?
- is there any reason to prefer JApplet over Applet?
- do the JavaScript need to invoke start() or init() or is this done on page load?
- are there limitations on data exchange with the applet (ie. only string types)?
- how do I throw exceptions from the applet to the calling script?
and: will is it better to let JavaScript do all http to keep the applet light, or to let the applet fetch files given a URL (to fetch the new certificate)?
If the applet is stored in a jar-file, how do I indicate which class/method to invoke? Do the JavaScript have access to public methods only?
Thanks for your advice and suggestions,
Erik

Hi,
Are you still interested?
I can work with you over this.
Adil

HT3581 how do i unblock java on my mac?

.

For 10.6.8, a new version of Java 6 is available as of TODAY on Software Update.
For Java 7, a new version is available on the java website. ONLY from here:
http://www.java.com/en/download/index.jsp

How to sign java applet policy to end user?

i have putted my applet class on server, i want all end users can access it on server, how to sign the java.policy to there JRE?
can anyone help me?

I found this some where else. It shows how to sign an applet.
START OF DOC
How To Sign a Java Applet
The purpose of this document is to document the steps required to sign and use an
applet using a self-signed cert or CA authorized in the JDK 1.3 plugin.
The original 9 steps of this process were posted by user irene67 on suns message forum:
http://forums.java.sun.com/thread.jsp?forum=63&thread=132769
-----begin irene67's original message -----
These steps describe the creation of a self-signed applet. This is useful for testing purposes. For use of public reachable applets, there will be needed a "real" certificate issued by an authority like VeriSign or Thawte. (See step 10 - no user will import and trust a self-signed applet from an unkown developer).
The applet needs to run in the plugin, as only the plugin is platform- and browser-independent. And without this indepence, it makes no sense to use java...
1. Create your code for the applet as usual.
It is not necessary to set any permissions or use security managers in
the code.
2. Install JDK 1.3
Path for use of the following commands: [jdk 1.3 path]\bin\
(commands are keytool, jar, jarsigner)
Password for the keystore is any password. Only Sun knows why...
perhaps ;-)
3. Generate key: keytool -genkey -keyalg rsa -alias tstkey
Enter keystore password: *******
What is your first and last name?
[Unknown]: Your Name
What is the name of your organizational unit?
[Unknown]: YourUnit
What is the name of your organization?
[Unknown]: YourOrg
What is the name of your City or Locality?
[Unknown]: YourCity
What is the name of your State or Province?
[Unknown]: YS
What is the two-letter country code for this unit?
[Unknown]: US
Is CN=Your Name, OU=YourUnit, O=YourOrg, L=YourCity, ST=YS, C=US
correct?
[no]: yes
(wait...)
Enter key password for tstkey
(RETURN if same as keystore password):
(press [enter])
4. Export key: keytool -export -alias tstkey -file tstcert.crt
Enter keystore password: *******
Certificate stored in file tstcert.crt
5. Create JAR: jar cvf tst.jar tst.class
Add all classes used in your project by typing the classnames in the
same line.
added manifest
adding: tst.class(in = 849) (out= 536)(deflated 36%)
6. Verify JAR: jar tvf tst.jar
Thu Jul 27 12:58:28 GMT+02:00 2000 META-INF/
68 Thu Jul 27 12:58:28 GMT+02:00 2000 META-INF/MANIFEST.MF
849 Thu Jul 27 12:49:04 GMT+02:00 2000 tst.class
7. Sign JAR: jarsigner tst.jar tstkey
Enter Passphrase for keystore: *******
8. Verifiy Signing: jarsigner -verify -verbose -certs tst.jar
130 Thu Jul 27 13:04:12 GMT+02:00 2000 META-INF/MANIFEST.MF
183 Thu Jul 27 13:04:12 GMT+02:00 2000 META-INF/TSTKEY.SF
920 Thu Jul 27 13:04:12 GMT+02:00 2000 META-INF/TSTKEY.RSA
Thu Jul 27 12:58:28 GMT+02:00 2000 META-INF/
smk 849 Thu Jul 27 12:49:04 GMT+02:00 2000 tst.class
X.509, CN=Your Name, OU=YourUnit, O=YourOrg, L=YourCity, ST=YS, C=US
(tstkey)
s = signature was verified
m = entry is listed in manifest
k = at least one certificate was found in keystore
i = at least one certificate was found in identity scope
jar verified.
9. Create HTML-File for use of the Applet by the Sun Plugin 1.3
(recommended to use HTML Converter Version 1.3)
10. (Omitted See Below)
-----end irene67's original message -----
To make the plug-in work for any browser you have two options with the JDK 1.3 plugin.
1) Is to export a cert request using the key tool and send it to a CA verification source like verisign.
When the reponse comes back, import it into the keystore overwriting the original cert for the generated key.
To export request:
keytool -certreg -alias tstkey -file tstcert.req
To import response:
keytool -import -trustcacerts -alias tstkey -file careply.crt
An applet signed with a cert that has been verified by a CA source will automatically be recognized by the plugin.
2) For development or otherwise, you may want to just use your self-signed certificate.
In that case, the JDK 1.3 plugin will recognize all certs that have a root cert located in the JDK 1.3 cacerts keystore.
This means you can import your test certificate into this keystore and have the plugin recognize your jars when you sign them.
To import self-signed certificate into the cacerts keystore, change directory to where the JDK plugin key store is located.
For JDK 1.3.0_02: C:\Program Files\JavaSoft\JRE\1.3.0_02\lib\security
For JDK 1.3.1: C:\Program Files\JavaSoft\JRE\1.3.1\lib\security
Import your self-signed cert into the cacerts keystore:
keytool -import -keystore cacerts -storepass changeit -file tstcert.crt
(the password is literally 'changeit')
Now, regardless of which method you use, the applet should be recognized as coming from a signed jar. The user can choose to activate it if he / she chooses. If your applet uses classes from multiple jars, for example Apache's Xerce's parser, you will need to sign those jars as well to allow them to execute in the client's brower. Otherwise, only the classes coming from the signed jar will work with the java.security.AllPermission setting and all other classes from unsigned jars will run in the sandbox.
NOTE: Unless otherwise specified by the -keystore command in all keytool and jarsigner operations, the keystore file used is named '.keystore' in the user's home directory.
The first time any keystore is accessed (including the default) it will be created and secured with the first password given by the user. There is no way to figure out the password if you forget it, but you can delete the default file and recreate it if necessary. For most operations, using the -keystore command is safer to keep from cluttering or messing up your default keystore.

Use JAVA Applet to do the login part

Hi...
I am very new in java.I don know how to make a java applet so that user can type user name and password and then login to the system.
(If the username and password are matched)
Would anyone mind helping me to solve this problem??

You will be able to do this at least half a year later, for you gotta know JDBC, server-side programming, SSL, HTTPS and other scarry words :)

Java Scipt Calling Java Applet

how could i call java applet in my java script code as i'm going to build an applet for internet application server but i'm going to check user input validation in java script !?!?!!?

in javascript:
theApplet.someMethod()
in html: add a name attribute to the applet tag.
<APPLET CODE=MyApplet.class
NAME="theApplet"
MAYSCRIPT
HEIGHT=150
WIDTH=500>
</APPLET>
the mayscript attribute is added if you want to make applet to javascript communication possible. (and not only javascript to applet communication)

How do I unblock Java applet

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