[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now


Download JAR applet

Posted on 2004-09-17
Medium Priority
Last Modified: 2010-04-07

I have created a simple applet - 3 class file as long as an html to invoke it, which seems to work fine. I am now working on the download part, I was able to download the 3 class file and 1 html locally and run from there successfully, but I hope to JAR 3 class file and distribute the JAR along with the HTML. However I had problem after I downloaded the JAR and HTML, "ERror notinit applet". I did some research and found out the JAR has to be signed in order for somebody to use it. Do I have to do it?

I donot want to use ZIP to distribute it since it will require user has WINZIP installed.

Question by:pwang1973
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
LVL 53

Accepted Solution

COBOLdinosaur earned 800 total points
ID: 12092492
The signing requirment is necessary to protect users and the networks users are on.  If you are not prepared to work within normal security requirments, then don't development componnents that hae a potential to deliver malicious content.

If you want to do thing right this page fromt eh sin site should help work through the security issues:



Author Comment

ID: 12105150
Thanks for the reply,

howver after I download the .jar and the startup.html, I got a error the applet not inited, it seems that it cannot access the class in the jar file, after I download the class file, everything seems fine. What's happening?


Author Comment

ID: 12106242
Attached the error msg, I put the jar into the same directory of the HTML, however it cannot find.

load: class SpreadSheet.class not found.

java.lang.ClassNotFoundException: SpreadSheet.class

      at sun.applet.AppletClassLoader.findClass(Unknown Source)

      at java.lang.ClassLoader.loadClass(Unknown Source)

      at sun.applet.AppletClassLoader.loadClass(Unknown Source)

      at java.lang.ClassLoader.loadClass(Unknown Source)

      at sun.applet.AppletClassLoader.loadCode(Unknown Source)

      at sun.applet.AppletPanel.createApplet(Unknown Source)

      at sun.plugin.AppletViewer.createApplet(Unknown Source)

      at sun.applet.AppletPanel.runLoader(Unknown Source)

      at sun.applet.AppletPanel.run(Unknown Source)

      at java.lang.Thread.run(Unknown Source)

Author Comment

ID: 12106661
Caused by: java.io.FileNotFoundException: d:\ucdg_estim\SpreadSheet\class.class (The system cannot find the path specified)

      at java.io.FileInputStream.open(Native Method)

      at java.io.FileInputStream.<init>(Unknown Source)

      at java.io.FileInputStream.<init>(Unknown Source)

      at sun.net.www.protocol.file.FileURLConnection.connect(Unknown Source)

      at sun.net.www.protocol.file.FileURLConnection.getInputStream(Unknown Source)

      at sun.applet.AppletClassLoader.getBytes(Unknown Source)

      at sun.applet.AppletClassLoader.access$100(Unknown Source)

      at sun.applet.AppletClassLoader$1.run(Unknown Source)

      at java.security.AccessController.doPrivileged(Native Method)

Featured Post

Understanding Web Applications

Without even knowing it, most of us are using web applications on a daily basis. Gmail and Yahoo email, Twitter, Facebook, and eBay are used by most of us daily—and they are web applications. We often confuse these web applications tools for websites.  So, what is the difference?

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Now that Expression Web 4.0 (http://www.microsoft.com/expression/products/Upgrade.aspx) is free if you buy or have the full version of Expression Web 3.0, now is the best time to  migrate from FrontPage to Expression Web (http://www.frontpage-to-exp…
Turn A Profile Picture Into A Cartoon Using Photoshop And Illustrator This tutorial will teach you how to make a cartoon style image out of a regular picture. I have tried to keep the tutorial as simple as possible. I used Adobe CS4 for this tuto…
The purpose of this video is to demonstrate how to manually back up a WordPress Database. This will be demonstrated using a Windows 8 PC. The Host used will be IPage.com Log into your Hosting account. IPage will be used for demonstration : Locat…
The purpose of this video is to demonstrate how to set up the permalinks on a WordPress Website. This will be demonstrated using a Windows 8 PC. Go to your WordPress login page. This will look like the following: mywebsite.com/wp-login.php : Go t…
Suggested Courses

650 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question