Chapter 16 - Application vs. Applet

Application versus Applet

For users that have a proxy server, the DataFerrett Applet should be installed and run with your internet browser. The proxy server does not allow installation of software to a user's computer.

To determine if you have a proxy server:

• Microsoft Internet Explorer: TOOLS > INTERNET OPTIONS > CONNECTIONS > LAN SETTINGS If you have a checked box in the "PROXY SERVER" section you have a proxy server.

  

• Netscape: EDIT > PREFERENCES > ADVANCED > PROXIES If you have a selection in Manual or Automatic proxy configuration, you have a proxy server.

  

The DataFerrett installation will require the services of your System Administrator with special privileges installing new software, usually. The DataFerrett application is actually created using the same code as the Applet, it is just that as an applet user with a proxy server you can/will need to set up DataFerrett and take a couple of extra steps.

DataFerrett is created using JAVA. Since we are all generally using a Windows environment, you will have to give Windows permission to allow the java to perform functions for you. This sounds a little intimidating, but it isn't really.

1. First go to the following link and download the DataFerrett Applet installation file to your computer DESKTOP. This file is only 5.2MB.
2. Double click on the icon that is created on the DESKTOP to run through the installation wizard.
3. Once this is complete you will want to install the "permissions" for Windows. Again, go to DataFerrett Applet Install page and click on the link " Copy, Cut, Paste & Save in DataFerrett". This will put another icon on your desktop.
4. Double click on the icon (j2re1_3_1_01-win.exe) The DataFerrett Applet will place the following file in your WINNT folder in a JavaSoft folder. OR, you can create you own

   Creating your own Permissions File
   
   

To create your own permission file simply open up a text editor (Notepad, Wordpad, etc.) and paste the following code into it:

/* DataFerrett Java Policy to allow copy/paste, print, and save */
/* DO NOT EDIT */
/* Version 1.01 */

grant codeBase "http://dataferrett.census.gov/-" {
      permission java.io.FilePermission "<<ALL FILES>>", "read, write, delete, execute";
      permission java.lang.RuntimePermission "queuePrintJob";
      permission java.util.PropertyPermission "user.home", "read";
      permission java.awt.AWTPermission "accessClipboard";
};

grant codeBase "http://ferret.bls.census.gov/-" {
      permission java.io.FilePermission "<<ALL FILES>>", "read, write, delete, execute";
      permission java.lang.RuntimePermission "queuePrintJob";
      permission java.util.PropertyPermission "user.home", "read";
      permission java.awt.AWTPermission "accessClipboard";
};

Save the file as ".java.policy" and place it into the following Windows directory depending on your operating system:
C:\Winnt\Profiles\uName on multi-user Windows NT systems
C:\Windows\Profiles\uName on multi-user Windows 95 systems
C:\Windows on single-user Windows 95 systems

Now you are ready to start DataFerrett. Go to the DataFerrett website page with the Netscape and Internet Explorer icons. Choose the browser you use and DataFerrett will begin.