Question about Java applets being blocked.

-I have succeeded in getting the 32 bit Java 8 applet plugin for Windows 7 Firefox v34 running.
However, I have a situation where the applet loader itself has started blocking my applets.
I have allowed the applet through in an unwiedly fashion.
I can't find a way to generally lower the java plugin security applet blocker to allow
unsigned applets. The only option I have is adding
that webpage file reference to the exceptions list, closing the web browser
and restarting it.
The Java control panel Security Level radio buttons
only exist for Very High and High; I do believe I want lower.
However there isn't an auto selection for one.
-How can I just click one button within Firefox to allow
an applet through, and begin to run, if I want?

Similar Messages

Question about Java Applet Jar file signing.

These questions pertain to Java 6 Standard Edition 1.6.0_22-b04 and later.
I have gone through the Oracle Java Tutorial for generate public and private key information
to sign a jar file, and how to sign the jar itself, all at
[http://java.sun.com/developer/onlineTraining/Programming/JDCBook/signed.html|http://java.sun.com/developer/onlineTraining/Programming/JDCBook/signed.html]
, and seek some clarification on the following related questions:
-In order to "escape" the java applet sandbox that exists around the client's
copy of the applet running in their web browser, ie.
(something forbidden by default), is verification of the signed applet enough, or is a policy file required
to stipulate these details?
-using the policytool policy file generator, what do I need to add under "Principals"
(if anything) when dealing with a Java applet? Are Codebase and SignedBy simply author information?
-If I choose to use a java.security.Permission subclass object set up in equivalent fashion within the Applet,
which class within the Applet jar do I instantiate that object in? Does it need to be mentioned
in the applet's jar Manifest.MF file?
-Is the "keystore database" a java language service/process which runs in
the Server's memory and is simply accessed and started by default
by the client verifier program (appletview/web browser)?
-The public key certificate file (*.cer) is put in the webserver directory holding
the Applet jar file (ie. Apache Tomcat, for example).
-Presumably, the web browser detects the signed jar
and certificate file, and provides the browser pop up menu asking the user
about a new, non recognised certificate (initially).
Is this so?
-With this being the case, can the applet now escape
the sandbox, be it with or without the stipulated
policy permissions?

848439 wrote:
-In order to "escape" the java applet sandbox that exists around the client's
copy of the applet running in their web browser, ie.
(something forbidden by default), is verification of the signed applet enough, or is a policy file required
to stipulate these details?Just sign the applet, the policy file is not necessary.
-Is the "keystore database" a java language service/process which runs in
the Server's memory and is simply accessed and started by default
by the client verifier program (appletview/web browser)?No.
-The public key certificate file (*.cer) is put in the webserver directory holding
the Applet jar file (ie. Apache Tomcat, for example).No. For a signed Jar, all the information is contained inside the Jar.
-Presumably, the web browser detects the signed jar
and certificate file, and provides the browser pop up menu asking the user
about a new, non recognised certificate (initially).
Is this so?No. It is the JVM that determines when to pop the confirmation dialog.
-With this being the case, can the applet now escape
the sandbox, ..Assuming the end-user OK's the trust prompt, yes.
..be it with or without the stipulated
policy permissions?Huh?

Question About Java Threads and Blocking

I'm helping someone rehost a tool from the PC to the Sun. We're using the Netbeans IDE and the Java programming language. I took a Java course several years ago, but need some help with something now. We're developing a front-end GUI using Swing to allow users to select different options to perform their tasks. I have a general question that will apply to all cases where we run an external process from the GUI. We have a "CommandProcessor" class that will call an external process using the "ProcessBuilder" class. I'm including the snippet of code below where this happens. We pass in a string which is the command we want to run. We also instantiate a class called "StreamGobbler" my coworker got off the Internet for redirecting I/O to a message window. I'm also including the "StreamGobbler" class below for reference. Here's the "CommandProcessor" class:
// Test ProcessBuilder
public class CommandProcessor {
public static void Run(String[] cmd) throws Exception {
System.out.println("inside CommandProcessor.Run function...");
Process p = new ProcessBuilder(cmd).start();
StreamGobbler s1 = new StreamGobbler("stdin", p.getInputStream());
StreamGobbler s2 = new StreamGobbler("stderr", p.getErrorStream());
s1.start();
s2.start();
//p.waitFor();
System.out.println("Process Returned");
Here's the "StreamGobbler" class:
import java.lang.*;
import java.io.*;
// Attempt to make the output of the process go to the message window
// as it is produced rather that waiting for the process to finish
public class StreamGobbler implements Runnable {
String name;
InputStream is;
Thread thread;
public StreamGobbler (String name, InputStream is){
this.name = name;
this.is = is;
public void start(){
thread = new Thread (this);
thread.start();
public void run(){
try{
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
while (true){
String s = br.readLine();
if (s == null) break;
System.out.println(s);
//messageWindow.writeToMessageArea("[" + name + "]" + s);
is.close();
catch(Exception ex){
System.out.println("Problem reading stream" + name + "...:" + ex);
ex.printStackTrace();
The "CommandProcessor" class calls two (2) instances of the "StreamGobbler" class, one for "stdin" and one for "stderr". My coworker discovered these are the 2 I/O descriptors that are needed for the external command we're running in this case. We're actually called the Concurrent Versions System (cvs) command from the GUI. Here's what we need it to do:
We want to display the output real-time as the external process is executing, but we want to block any actions being performed on the GUI itself until the process finishes. In other words, we want to show the user any generated output from the process, but don't want to alllow them to perform any other actions on the GUI until this process has finished. If we use the "waitFor()" function associated with a process, it blocks all external process output until the process has completed and then spews all the output to the screen all at once. That's NOT what we want. Also, if we don't use the "waitFor()" function, the code just continues on as it should, but we don't know how to block any actions on the GUI until this process has finished. My coworker tried the following code, but it also blocked any output until the process had finished:
while (s1.thread.isAlive() || s2.thread.isAlive())
// We really don't do anything here
I'm pretty sure we have to use threads for the output, but how do we instantly show all output and block any GUI actions?
Thank you in advance for your help!

You're talking about a GUI, but there's nothing in that code which is putting events into the GUI update thread. You also say that nothing happens to the GUI until the CommandProcessor.Run() method returns if you wait for the process.
This implies that you're calling CommandProcessor.Run() in an ActionListener. This will block the GUI thread until it completes.
I was going to explain what to do, but a quick Google informed me that there's a new class which is designed to help in these situations SwingWorker (or as a [separate library|https://swingworker.dev.java.net/] if you're not up-to-date yet).

Java applet window blocking yahoo games

not a devloper, but I really need some help handling this java problem. when I log onto yahoo games, bar that says "java applet window" blocks the bottom portion of the screen. how can I get rid of this?

i found out how to get older verison of java6-7 verison .
Go to search bar type in OpenOffice.org 3.0 and download this.it will take about 30 minute to download this file.after download this go to add & REMOVE PROGRAM to see if download and if did delete java 6u10 version . email me at [email protected] to see it work

Java is being blocked

I just got a pop up saying Java is being blocked.
It says something about Firefox has found out that Java(TM) Platform SE 6 U31 6.0.310.5 is causing stability or security problems.
It's just popped up randomly while I was watching YouTube videos.

Alright, let's try a few things here.
First, update to Firefox 11. Firefox 3.6 will be dropped from support in a few weeks, which means it will no longer be receiving security or stability updates. Firefox 11 is up to 7 times faster than 3.6, has lots of new features and improvements, as well as support for new web standards. [http://www.mozilla.org/en-US/firefox/features/ http://www.mozilla.org/en-US/firefox/features/] and [[Updating Firefox|Updating Firefox]] have more information.
After that, go into Start, then Control Panel, then Add or Remove Programs. Look for Java on this list. There may be several entries, and they maybe labeled different versions (jave 6, java 1.5, etc.). Uninstall then all. Then, restart your computer.
Download Java from [http://javadl.sun.com/webapps/download/AutoDL?BundleId=62313 http://javadl.sun.com/webapps/download/AutoDL?BundleId=62313], install it. Then, your flash is out of date as well, so download the updated version from [http://fpdownload.macromedia.com/pub/flashplayer/current/licensing/win/install_flash_player_11_plugin_32bit.exe http://fpdownload.macromedia.com/pub/flashplayer/current/licensing/win/install_flash_player_11_plugin_32bit.exe]. After doing this, restart your Pc again, and let me know if you are still having problems.

Question about Java's HttpServer: Threading? Backlog?

Hello,
I have two questions about Java's HttpServer (com.sun.net.httpserver). From the JavaDoc:
>
Management of threads can be done external to this object by providing a Executor object. If none is provided a default implementation is used.
>
How can I get information about the default implementation in 1.6.0_13? Do you know the behavior? From my observations, the default implementation uses no Threads, meaning every request is handled in the same Thread, this results in handling the requests to the HttpServer one after another.
Is this right?
The second question is about this, also from the JavaDoc:
>
When binding to an address and port number, the application can also specify an integer backlog parameter. This represents the maximum number of incoming TCP connections which the system will queue internally. [...]
>
When setting the backlog to -1, it uses the systems default backlog. How can I determine the systems default backlog? Can some lines of Java code reveal it (there is no getBeacklog() method)? Or is it up to the Operating System (we use Redhat Linux)?
Thanks a lot for your help!
Regards,
Timo

How can I determine the systems default backlog?You can't. There is no API for that even at the C level.
Can some lines of Java code reveal itNo.
Or is it up to the Operating System (we use Redhat Linux)?Yes. Linux provides a large default. It seems to be at least 50 on most platforms. This is not something you should be worrying about.

Three questions about Java and Ftp

Hello, i've the following questions about Java and Ftp:
1- .netrc file is in $HOME directory but i can't access to this directory from java code. The following line producesan Exception (directory doesn't exists)
FileWriter file = new FileWriter ("$HOME/.netrc");
2- .netrc file must have the following permissions: -rw- --- --- but when i create the .netrc file the following permissions are on default: -rw- r-- r--, how can i change this permissions? (In java code, i can't use chmod.....)
3- Are there any way to pass parameters to a .netrc file? If i get to do this i needn't change the permissions because i can't modify or create/destroy this file.
Thanks in advanced!!!
Kike

1- .netrc file is in $HOME directory but i can't
access to this directory from java code. The
following line producesan Exception (directory
doesn't exists)
FileWriter file = new FileWriter ("$HOME/.netrc");$HOME would have to be replaced by a shell, I don't
think you can use it as part of a legal path.
Instead, use System.getProperty("user.home");
Ok, thanks
2- .netrc file must have the followingpermissions:
-rw- --- --- but when i create the .netrc file the
following permissions are on default: -rw- r--r--,
how can i change this permissions? (In java code,i
can't use chmod.....)Yes, you can: Runtime.exec("chmod ...");
I need to use estrictly the .netrc with -rw- --- --- permissions
Yes, i can use Runtime.exec ("chmod ..."); but i don't like very much this solution because is a slow solution, am i right?
3- Are there any way to pass parameters to a.netrc
file? If i get to do this i needn't change the
permissions because i can't modify orcreate/destroy
this file.I don't think so. Why do you need the .netrc file in
Java at all? Writing a GUI frontend?I want to use automatic ftp in a java program and FTP server, the files and path are not always the same, so i can:
- modify .netrc (for me is the complex option)
- destroy and create a new .netrc (is easier but i have permissions problem)
- use .netrc with parameters but i haven't found any help about it
Thanks for your prompt reply!!!!
Kike

Need help with Java, have a few questions about my Applet

Purpose of the program: To create a mortgage calculator that will allow the user to input the loan principal then select 1 of 3 choices from a combo-box (7 years @ 5.35%, 15 years @ 5.50%, 30 years @ 5.75%).
Problem: My program was working properly (so I thought). I can get the program to properly compile and run through TextPad. However, I noticed that when the user clicks the calculate more than once (with the same input), it slightly alters the output calculations. So that is my first question, Why is it doing that? How can I get it only calculate that information once unless the user changes it etc?
My next question is regarding my exit button. I was told by my instructor (who has already stated he won't help any of us) that my exit button does not work for an applet and only for an application. So, how can I create an exit button that will work with an applet? I thought I did it right but I can't find any resources online for this.
Next question, why isn't my program properly validating invalid input? My program should only allow numeric input and nothing more.
And last question, when invalid input is entered and the user clicks calculate, why isn't my JOptionPane window for error messages not displaying?
I know my code is a little long so I have to post this in two messages. Please don't criticize me for what I am doing, that is why I am learning and have come to this forum for help. Thanks
import java.applet.Applet;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import java.text.NumberFormat;
import java.text.DecimalFormat;
// Creating the main class
public class test extends JApplet implements ActionListener
     // Defining of format information
     JLabel heading = new JLabel("McBride Financial Services Mortgage Calculator");
     Font newFontOne = new Font("TimesRoman", Font.BOLD, 20);
     Font newFontTwo = new Font("TimesRoman", Font.ITALIC, 16);
     Font newFontThree = new Font("TimesRoman", Font.BOLD, 16);
     Font newFontFour = new Font("TimesRoman", Font.BOLD, 14);
     JButton calculate = new JButton("Calculate");
     JButton exitButton = new JButton("Quit");
     JButton clearButton = new JButton("Clear");
     JLabel instructions = new JLabel("Please Enter the Principal Amount Below");
     JLabel instructions2 = new JLabel("and Select a Loan Type from the Menu");
     // Declaration of variables
     private double principalAmount;
     private JLabel principalLabel = new JLabel("Principal Amount");
     private NumberFormat principalFormat;
     private JTextField enterPrincipal = new JTextField(10);
     private double finalPayment;
     private JLabel monthlyPaymentLabel = new JLabel(" Monthly Payment    \t         Interest Paid    \t \t            Loan Balance");
     private NumberFormat finalPaymentFormat;
     private JTextField displayMonthlyPayment = new JTextField(10);
     private JTextField displayInterestPaid = new JTextField(10);
     private JTextField displayBalance = new JTextField(10);
     // Creation of the String of arrays for the ComboBox
     String [] list = {"7 Years @ 5.35%", "15 Years @ 5.50%", "30 Years @ 5.75%"};
     JComboBox selections = new JComboBox(list);
     // Creation of the textArea that will display the output
     private TextArea txtArea = new TextArea(5, 10);
     StringBuffer buff = null;
          Edited by: LoveMyAJ on Jan 19, 2009 1:49 AM

// Initializing the interface
     public void init()
          // Creation of the panel design and fonts
          JPanel upper = new JPanel(new BorderLayout());
          JPanel middle = new JPanel(new BorderLayout());
          JPanel lower = new JPanel(new BorderLayout());
          JPanel areaOne = new JPanel(new BorderLayout());
          JPanel areaTwo = new JPanel(new BorderLayout());
          JPanel areaThree = new JPanel(new BorderLayout());
          JPanel areaFour = new JPanel(new BorderLayout());
          JPanel areaFive = new JPanel(new BorderLayout());
          JPanel areaSix = new JPanel(new BorderLayout());
          Container con = getContentPane();
          getContentPane().add(upper, BorderLayout.NORTH);
          getContentPane().add(middle, BorderLayout.CENTER);
          getContentPane().add(lower, BorderLayout.SOUTH);
          upper.add(areaOne, BorderLayout.NORTH);
          middle.add(areaTwo, BorderLayout.NORTH);
          middle.add(areaThree, BorderLayout.CENTER);
          middle.add(areaFour, BorderLayout.SOUTH);
          lower.add(areaFive, BorderLayout.NORTH);
          lower.add(areaSix, BorderLayout.SOUTH);
          heading.setFont(newFontOne);
          instructions.setFont(newFontTwo);
          instructions2.setFont(newFontTwo);
          principalLabel.setFont(newFontThree);
          monthlyPaymentLabel.setFont(newFontFour);
          displayInterestPaid.setFont(newFontFour);
          displayBalance.setFont(newFontFour);
          areaOne.add(heading, BorderLayout.NORTH);
          areaOne.add(instructions, BorderLayout.CENTER);
          areaOne.add(instructions2, BorderLayout.SOUTH);
          areaTwo.add(principalLabel, BorderLayout.WEST);
          areaTwo.add(enterPrincipal, BorderLayout.EAST);
          areaThree.add(selections, BorderLayout.NORTH);
          areaFour.add(calculate, BorderLayout.CENTER);
          areaFour.add(exitButton, BorderLayout.EAST);
          areaFour.add(clearButton, BorderLayout.WEST);
          areaFive.add(monthlyPaymentLabel, BorderLayout.CENTER);
          areaSix.add(txtArea, BorderLayout.CENTER);
          // Using the ActionListener to determine when each button is clicked
          calculate.addActionListener(this);
          exitButton.addActionListener(this);
          clearButton.addActionListener(this);
          enterPrincipal.requestFocus();
          selections.addActionListener(this);
     // The method that will perform specific actions defined below
     public void actionPerformed(ActionEvent e)
          Object source = e.getSource();
          buff = new StringBuffer();
          // Outcome of pressing the calculate button
          if (source == calculate)
               // Used to call upon the user chosen selection
               int selection = selections.getSelectedIndex();
               // If statement to call upon Loan One's Method
               if (selection == 0)
                    Double data = (Double)calculateLoanOne();
                    String sourceInput = data.toString();
                    displayMonthlyPayment.setText(sourceInput);
                    txtArea.setText(buff.toString());
               // If statement to call upon Loan Two's Method
               else if (selection == 1)
                    Double data = (Double)calculateLoanTwo();
                    String sourceInput = data.toString();
                    displayMonthlyPayment.setText(sourceInput);
                    txtArea.setText(buff.toString());
               // If statement to call upon Loan Three's Method
               else if (selection == 2)
                    Double data = (Double)calculateLoanThree();
                    String sourceInput = data.toString();
                    displayMonthlyPayment.setText(sourceInput);
                    txtArea.setText(buff.toString());
               // Outcome of pressing the clear button
               else if (source == clearButton)
                    enterPrincipal.setText("");
                    displayMonthlyPayment.setText("");
                    selections.setSelectedIndex(0);
                    txtArea.setText("");
               // Outcome of pressing the quit button
               else if (source == exitButton)
                    System.exit(1);
     // Method used to validate user input
     private static boolean validate(JTextField in)
          String inText = in.getText();
          char[] charInput = inText.toCharArray();
          for(int i = 0; i < charInput.length; i++)
               int asciiVal = (int)charInput;
          if((asciiVal >= 48 && asciiVal <= 57) || asciiVal == 46)
          else
               JOptionPane.showMessageDialog(null, "Invalid Character, Please Use Numeric Values Only");
               return false;
               return true;

Question about java-based server app frameworks

Hello, I am working on a Java applet application and would like to choose a Java-based scalable server framework to use within my applcation. I have found a few like xsocket or QuickServer and have a question about other. And, also, which is the one You may advise? Yours sincerely, Slawek

For online gaming server. I first heard of xsocket and started using this, but have the problem with NAT. I now know that I need to initiate connections from client behind NAT (server has a public IP) and send messages from server to client within the same connection. I am doing this the following way (as shown in examples- below), but it appears that server receives messages, but client doesnt. I dont listen on any ports in client application and just need to take advantage of the connection initiated (information go from client to server properly).
Server-
try{ nbc = pool.getNonBlockingConnection(inetAddress, 8090);
try{ nbc.write("|01|______|02|______|03|______|04|______|05|______|06|______|07|______|08|______|09|______|10|______"); }catch(Exception ee){}
}catch(java.io.IOException f){}
Client-
public boolean onData(INonBlockingConnection nbc) throws IOException,ClosedChannelException,BufferUnderflowException,MaxReadSizeExceededException{
String x = nbc.readStringByLength(100);
System.out.println("S >> C = "+x);

Questions about Java Servlets and JSP

Hi,
I'm a confident Java Programmer (and really enjoy using this language) but am very new to Java servlets and Java Server Pages.
I have previously worked with Perl on my web projects (simple 'league' style voting pages). I read in my 'Core Java' book that I should no longer use perl or even cgi.
I need to know more about Java servlets and Java Server Pages so I can make the switch to a 'real' programming language.
I have a few questions:
How should I start to learn JS and JSP?
How applicable will the java knowlegdge I have already be?
Are JSP common on the world wide web?
What tools do I need to start? (I currently develop in JBuilder and have Java 1.4.1 Standard Edition)
Is it likey my web host (and others) will support JSP?
Thank-you very much for helping a novice get started,
Regards,
Paul

Hi, Steve ...has to be frustrating! But do not despair.
Let's suppose the servlet it's named MyServlet on package org.servlets
WEB-INF should look:
WEB-INF
classes
org
servlets
MyServlet.class
web.xml
web.xml file should have this two declarations:
<web-app>
<servlet>
    <servlet-name>MyServlet</servlet-name>
    <servlet-class>org.servlets.MyServlet</servlet-class>
</servlet>

<servlet-mapping>
    <servlet-name>MyServlet</servlet-name>
    <url-pattern>/MyServlet</url-pattern>
</servlet-mapping>

</web-app>Now, once the container starts (Tomcat?), you should be able to see that servlet in:
http://localhost:8080/[my-context/]MyServletAnd what my-context is? The web application context. This string should be empty if your're deploying to the root context, otherwise should the context name. In Tomcat, deploying to root context defaults to using webapps/ROOT.
Sorry for my English, but I felt the need to answer your request. I hope it helps despite my writing.

Question about Java Errors

I have some questions about some java errors
1. what kind of errors are contained in Error class?
2.does this class contain only runtime errors?
3. if the question number 2 is positive, what about InstantiationError which is a compile error and is a subclass of Error.
4.When our program is out of memory, which processes are done for an error to be produced. is the error actually from OS or VM?

I have some questions about some java errors
1. what kind of errors are contained in Error class?An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch.
2.does this class contain only runtime errors?No
3. if the question number 2 is positive, what about
InstantiationError which is a compile error and is a
subclass of Error.
4.When our program is out of memory, which processes
are done for an error to be produced. is the error
actually from OS or VM?Various - both, depending on where the error occurred.

Question about Java apps structure

Hello guys,
I'm a professional C++ programmer and I would like to start learning Java. I'm reading about Java from here and there and would like to ask you about how a java program is structured compared to C++.
So in C++, I have main.cpp (or any other file name, doesn't matter), which contains a the main() function, and I have .h and .cpp class files that I instantiate (basically) in my main function to get my program to work.
In Java, I'm confused and can't really find the "general" rule to how stuff are organised. I noticed that every class has a main function (why?), and there's no global scope. And "somehow", file names must exactly be equal to the class names.
The question is: how are Java files of classes (and other stuff, if available) are arranged to create a program? What's the standard why? And How can I have many classes together in a single main()?
Thank you for any efforts :-)
Edited by: 927494 on 13.04.2012 07:02
Edited by: 927494 on 13.04.2012 09:10

Thank you guys for the replies. I still have some more doubts :-)
Do I have to have a file for the implementation and a file for the definitons, like cpp and header files? or just everything inside the class?
Why does Netbeans fail to compile when I change the class name? what should I change with the class name in general to have it compile correctly? From what I understand till now, the top level class's name (the class with the main() function that's gonna be executed) has to be equal to the file name (and I got that this is the sufficient condition for the app to compile), while the same file can have more classes if I wish. Did I get that right?
I don't know if I get that right too, we pass only a SINGLE class/file to the compiler, and it automatically resolves ALLLL the included files automatically, unlike C++, where all cpp files have to be passed to the compiler/makefile to create object files, and then the executable is created after linking all those object files with the libraries together. i.e.: Java doesn't really need a makefile because making is really simple with only 1 filename. True?

Question about Java 1.5 compilation and Execution on Apple iPad 2

Despite the fact that everyone on the internet seems to say Official Java and ipad/ipad2 support will not happen,
I would like to press this issue a little further.
Is it yet possible to run a java.class file on ipad2,
-without resorting to a java applet in a browser?
-Using a java applet?
-installing a java runtime, officially or unnofficially (say, gcj, or another community effort) ?
-I know about JXXX, which allows me to compile java files, howerver it doesn't automatically have
rt.jar or javaee.jar for 1.5,1.6,1.7 yet.
I there a web browser on the internet that allows one to compile and execute
java code programs (inside an applet say), that provides real time System outputs,
and even supports events and all such? That I could use in ipad2 Safari?
webrenderer requires developers to pay $, at webrenderlink
Is there a no cost version like webrenderer?
if so, what is the URL?
Edited by: 848439 on 25-Sep-2011 20:12
Edited by: 848439 on 25-Sep-2011 20:21

848439 wrote:
Despite the fact that everyone on the internet seems to say Official Java and ipad/ipad2 support will not happen,
I would like to press this issue a little further.You should listen to "everyone on the internet" this time. Give it up, Apple isn't going to allow it. Its either do what Apple instructs you to do, or take a hike (and switch to the Android platform).
Imagine having to include instructions with your application on how to get a community supported Java runtime on an iPad while users know only the appstore interface. Its a battle you are not going to win.

Some questions about Java deployment steps and techniques

All my java experience is coding and testing in my local machine (where, of course, a jre is available), but ... when I deploy to other people, they may not have a jre or they may have a different version of it than the one needed to run my application. I've read different stuff online including jars and java web start but still I have many questions.
(1) first one first, Sun contradicts common sense, when it says that i can redistribute my own customized light version of their jre by taking out some files (java.sun.com/j2se/1.5.0/jre/README). there are two ways for me to get a jre: Way one is by downloading one from Sun, the download comes as an *.exe file and I don't see how I can take files out of it, so do you know how?. Way two would be by simply copying the set of files i choose (according to that Readme) from my current jre installation (the one on my \java\jdk\jre directory), does this make sense?, (if you're under windows) doesn't an installed version of a jre need a couple of dlls plus some new registry entries?, this contradicts common sense, if I'm not wrong, that Readme is a nonsense, but since that readme is at each of us jre installation \java\jdk1.x\jre\Readme, it can't be a nonsense, therefore I'm wrong, therefore the answer is either Way 1 or Way 2, HOW? ... or maybe there's a Way 3?
(2) Say I never read that Readme so I download the jre (as an exe) to bundle it along with my application in a jar ... now I'll give my neighbor either a jar with two exes or two exes jars ... is there a way to make a jar so that two files get executed? ... if the answer is No and I have competition from a second neighbor, then I believe I'm asking my first neighbor to choose my application based on our friendship, that's not reasonable if we are doing business, so Java loses.
(3) Say that my application is a single executable file like this,
class X{
public static void main(String[]$$$){
System.out.println("Console, where are you?");
At this point, say that my neighbor accepted the two executables, he executed the jre.exe and has jre6 in his system, now he double clicks on my X.jar ... it's a console application and jar files are not associated with the java.exe launcher since java 5, but with javaw which doesn't open any console ... how do i make it so a console opens and prints "Console, where are you?" ... do I ask my neighbor-customer to add a couple of lines to his path and open his console and (please) enter java -jar jarfile.jar? ... isn't it too much? ... i hope i'm wrong cause this is kind of discouraging
(4) I've read that by installing a more recent version of a jre on a system that has an older jre (there to help other applications work), I might be causing a problem for the other applications to run ... I guess that's the reason why that Readme kind of encourage to redistribute a "private" version of a jre (one that doesn't come with a java.exe launcher ... any feedback on this?
(5) I'm reading a lot of hype about Java Web Start ... it looks better than the traditional jar/jre deployment ... but setting up a MIME type to *.jnlp, it doesn't come with some free hosting I've checked ... somebody can recommend a free hosting service that allows to set a *.jnlp MIME? (I'll appreciate a suggestion here, cause I would like to test Web Start)... and, anyhow, how you people compare it with the paradigm of the single executable file?.
Thanks. Your feedback is highly appreciated.

jorgelbanda wrote:
..(5) I'm reading a lot of hype about Java Web Start ... It's gratifying to think that someone who wants to deploy apps., has the common sense to search first! You would not guess how I often I hear "I wanna' make an EXE" shortly followed by "What's webstart?".
...it looks better than the traditional jar/jre deployment ... but setting up a MIME type to .jnlp, it doesn't come with some free hosting I've checked ... OK. You cannot define new mime types, but perhaps the site already has it defined. An easy way to check is to upload 'any old file' that ends in .jnlp and use the [mime type checker|http://pscode.org/mime/] to see what content type it is served as.
..somebody can recommend a free hosting service that allows to set a .jnlp MIME? (I'll appreciate a suggestion here, cause I would like to test Web Start)... I'm pretty sure the Google based sites offer it.
Note that I edited the asterisks out of your post, to avoid the forum software parsing half the reply as bold.

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