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This class checks dependent extensions a particular jar file may have
declared through its manifest attributes.
Jar file declared dependent extensions through the extension-list
attribute. The extension-list contains a list of keys used to
fetch the other attributes describing the required extension.
If key is the extension key declared in the extension-list
attribute, the following describing attribute can be found in
the manifest :
key-Extension-Name: (Specification package name)
key-Specification-Version: (Specification-Version)
key-Implementation-Version: (Implementation-Version)
key-Implementation-Vendor-Id: (Imlementation-Vendor-Id)
key-Implementation-Version: (Implementation version)
key-Implementation-URL: (URL to download the requested extension)
This class also maintain versioning consistency of installed
extensions dependencies declared in jar file manifest.
author:
Jerome Dochez
version:
1.5, 09/28/99 | 