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Java Support

Java 1.1 Application Support

VisualRoute 4.1b for Windows requires one of the following for Java support:

Microsoft's Java VM build 5.00.3167 or later (may be installed with MS Internet Explorer 5.0)

Sun's JRE (Java Runtime Environment) 1.1 or later

How to check your Java build/version.

For Microsoft's Java. Find msjava.dll (\system directory for Windows 95/98 and \system32 for Windows NT), go to Properties and the version number is listed.
For Sun's JRE. Run 'java -version' (or 'jre') from a DOS prompt and the version number will be displayed (e.g.: 1.1.4).

How to install or upgrade Java. You can easily install Java 1.1 application support in one of several ways:

Install Microsoft Internet Explorer 5 . During setup, select the Custom Installation Option (not Typical Installation) and select Microsoft Virtual Machine.
Install only the Microsoft Java VM without Internet Explorer. This is the best option if you prefer to use Netscape Navigator and do not want to install the full IE. The MS Java VM works stand-alone (with or without Internet Explorer).
For Win98: select Windows Update from the Start menu, then select Microsoft Virtual Machine for download.
For Win95/98/NT: download and install the Microsoft Virtual Machine for Win95/98/NT (7,212Kb) from ftp.visualroute.com, or see the Microsoft Java Virtual Machine Web Site for download and installation information.
Install Sun's JRE (Java Runtime Environment).

Please note: If you are using the Microsoft Java VM, the minimum version required for VisualRoute 4.1a has changed from the 4.0c version. If you are upgrading your version of VisualRoute for Windows, you may also need to upgrade to the latest Java VM.

Java 1.0.x or Java 1.1.x. Internet Explorer 3.x installs Java 1.0.x support. Internet Explorer 4.x (or VM build 4.79.2424 or later) installs Java 1.1.x support.

A Special Note for Netscape Navigator Users

Netscape Navigator currently does not support Java applications, only Java applets!

Applet vs. Application. There are two types of Java programs. One is called a Java applet and the other is called a Java application. The most important distinction between these two is the security restrictions imposed upon Java applets. Applets are run in a security 'sandbox' that prevents them from running other programs, accessing your disk drive or memory, etc. Due to the security restrictions of applets, VisualRoute was written as a Java application.

Installing Java 1.1 Application Support. You can install any Windows Java VM that supports Java applications in order to run VisualRoute. However, we recommend the Microsoft Java VM because it runs VisualRoute several times faster than any other Java VM we have tested. To install only the Microsoft Java VM without Internet Explorer, please refer to our java support section above for details.

Contacting Netscape. I have contacted Netscape about supporting Java applications but they do not seem interested. Will you join me in providing feedback to Netscape and let them know that you want Java application support?

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