WISE: Technical Support

Java Notice



About Java and JavaScript

Java Notice:

With recent Java updates, your security settings might block our Java applets from running. The WISE site is optimized for Internet Explorer – if a plugin is not supported by another browser, we suggest you use Internet Explorer.

If access to a WISE Java applet is blocked, you can take the following steps to unblock all of our Java applets:

  1. Go to the Java Control Panel
    • In Windows: Click Start and type Configure Java in Search programs and files
    • In Mac OS X: Click the Apple menu, click on System Preferences and then click on the Java icon
  2. Click the Security tab
  3. Click Edit Site List
  4. Click Add
  5. Type http://wise1.cgu.edu
  6. Click Add again
  7. Click Continue and OK
  8. Restart your computer

You can read more about the issue at Java.com



Viewing PDF files

If you have trouble viewing an Exercise file or other document downloaded as a PDF (Portable Document File) file, you may need to download and install Adobe Reader to view it.

Refresh Webpage

If an applet does not behave or appear correctly, click the RELOAD/REFRESH button, usually signified by an arrow or arrows on your browser (or press F5 on your keyboard if you are using Internet Explorer).

Enable Java and JavaScript

If you receive a security warning that blocks Java, you can unblock Java for the WISE pages by following steps described under Java Notice on this page.

If an applet is still not working or if a WISE webpage does not load properly after refreshing the webpage, it may be due to Java or JavaScript being disenabled on your web browser. If Java or JavaScript has been disabled, it needs to be re-enabled:

Microsoft IE (Version 4.x and up)

  1. Under the Tools menu, select Internet Options….
  2. Under the Advanced tab, scroll down to Java (Sun).
  3. Select Use JRE 1.6.x … for <applet>.
  4. Under the Security tab, click Custom Level….
  5. Scroll down to Scripting.
  6. Select Enable for both Active scripting and Scripting of Java applets.
  7. Click OK and then click OK again.

Mozilla Firefox

  1. Under the Tools menu, choose Options….
  2. Click Web Features.
  3. Select Enable Java and Enable JavaScript.
  4. Click OK.

Google Chrome

  1. Google Chrome no longer supports Java. Users are referred to the Chrome Help Center.


  1. Make sure sure that the applet you are attempting to use is still open in one of your tabs.
  2. Under the Safari menu, choose Preferences….
  3. Click the Security tab.
  4. Select Enable JavaScript and Allow Plug-ins.
  5. Click Manage Website Settings….
  6. In the left pane click on Java.
  7. In the right pane wise1.cgu.edu should appear, in the drop-down menu select Always Allow.

For more information on enabling Java, consult Sun Microsystem’s Java website. If neither refreshing the webpage nor enabling Java results in the webpage or applet being properly displayed, you may need to download and install the free Java Runtime Environment.

A useful website to detect Java on your browser is: http://www.javatester.org.

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Adobe Reader

Adobe Reader is a free software program used to view PDF (Portable Document Format) files. Most WISE Exercise pages are downloadable and viewable in this format.

Java Software

If enabling Java on your browser does not resolve problems accessing WISE applets, download and install the free Java software, Java Runtime Environment (JRE). Once you have downloaded and installed JRE, be sure that Java is enabled on your browser using the steps given in the Troubleshooting section.

Web Browser

If WISE web pages do not load, try upgrading to the latest versions of one of these web browsers. These software programs are free.

Microsoft Internet Explorer (IE) is available for free download, and comes installed on Windows machines.

Mozilla Firefox, an open-source web browser, is available for Windows, Mac OS X and Linux.

Chrome is Google’s open-source browser, available for Windows, Mac OS X, and Linux. Chrome does not support Java applets.

Safari is Apple’s browser included with both Mac OS X and iOS. It is available for Windows as well.

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About Java and JavaScript

A Java applet is an application designed to run within a web page. Applets can operate across different computer operating systems because they rely upon a Java Runtime Environment (JRE) implemented by a specific computer’s web-browsing application.

Java Applets are secure and safe to use. One should always be wary of downloading applications from anonymous sources on the Internet because of the possibility of viruses. However, the Java language explicitly puts limits on the functionality of applets so as to prohibit malicious behavior. A Java applet cannot read or write from a user’s computer without permission from the user.

JavaScript is a language used to create dynamic webpage applications. Like Java, JavaScript does not allow a program to access the files or directories on a user’s computer. Despite its name, JavaScript (originally called “LiveScript”) originated independently of Java and may not always be compatible with every browser.

The WISE site implements Java applets and JavaScripting to allow real-time demonstrations of statistical concepts that are beneficial to the understanding of statistics. To use many features of this site, it is necessary to have a web browser that supports Java and JavaScript such as Microsoft Internet Explorer (PCs) or Safari (Apples). Java and JavaScript must be enabled on the browser, and Java may need to be unblocked for the http://wise.cgu.edu website as described under Java Notice on this page.

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Contact: wise@cgu.edu

Last updated: November 7, 2015

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