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Clearing Java Cache (Erratic FTP Voyager JV Behavior)  -  KB Article #1761

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The FTP Voyager JV add-on for Serv-U is highly reliant on browser settings for proper loading and client-side installation. In some situations, old cache entries in browsers and in Java can cause FTP Voyager JV to be unable to load or operate properly. To get around this, first clear your browser cache (see link for directions) and then clear your Java cache (following the directions below. Directions for the various Operating Systems follow:

Microsoft Windows

To clear the Java cache from Microsoft Windows:

  1. Open the Windows Control Panel (typically located under Start | Control Panel, or Start | Settings | Control Panel).
  2. Open the "Java" entry
  3. Click on "Settings" near the bottom of the window

  4. Click on "Delete Files"

  5. Click on "OK"

Macintosh OS X

To clear the Java cache on a Mac OS X machine:

  1. In the Finder, click on "Go" and then on "Utilities"

  2. In "Utilities", select the "Java" folder, then click on Java Web

  3. Select all FTP Voyager JV entries, and delete them


Clearing the Java Web Start cache in Linux will vary greatly upon the build of Java, method of installation, and other customization. However, a base set of steps is provided below.

First, open a terminal and change directory to the Java Web Start folder. This is typically /usr/java/jre1.6.x./javaws (an example is /usr/java/jre1.6.0_05/javaws). Then, execute the program "javaws" with the -uninstall flag, clearing the Java Web Start cache. The full command line output would be:

[root@localhost /]# cd /usr/java/jre1.6.0_05/javaws
[root@localhost javaws]# javaws -uninstall