Windchill System Administrator's Guide

Java Plugin Cache
The JAR caching feature of the bootstrap loader, when used with applets, is
similar to the Java plugin caching scheme. All Windchill supplied applets use the
Java plugin and the plugin JAR caching mechanism. Although the Bootstrap
loader may continue to be used with applets, it is recommended to use the plugin
caching mechanism. Until other technologies are sufficiently mature, the
Bootstrap loader is still recommended for remote Java applications. The Java
plugin cache and bootstrap cache use the same JAR files available in the
Windchill codebase directory. The Administering Codebase section later in this
chapter is pertinent for both mechanisms.
Bootstrap Configuration File
The bootstrap package maintains a properties configuration file named
.wtboot.properties in the directory identified by the Java user.home system
property. The following sections show how you can use this file to control JAR
file location and Java system properties.
Specifying JAR File Cache Location
The first time you use the bootstrap feature, you are prompted for the location in
which to cache JAR files.
The location you specify is stored for future use in the .wtboot.properties
configuration file that is located in the user’s home directory.
When browsing for the JAR file location, the Cache Location dialog box starts in
the user.home location. The file name in the dialog box is a placeholder, as only
the directory location is important. The open directory that is displayed in the
Cache Location box is the actual location that is returned.
Administering the Bootstrap Client 2-3