Query on usage of exclude-resources plugin
Alan.Bateman at oracle.com
Tue Apr 25 08:17:33 UTC 2017
On 25/04/2017 08:37, Sabari L Krishnamoorthy wrote:
> I was experimenting to use --exclude-resources plugin to remove .class
> files from modules.
> While trying to exclude a single .class file using this plugin works (see
> point 1 below), but removal of all .class files from a package throws
> error (see point 2 below)
`--exclude-resources` is an option that must be used with great care.
It's intended for stripping resources that you are sure are not needed.
In the usage message then you'll see "jcov" is mentioned and removing
data files generated for coverage analysis tools is a good example of
something that can be stripped. Another example is resource files in
META-INF/** that you know are not needed by libraries when deployed as
The option can be used to remove .class resources but too easy to burn
your hands. In the examples then you've removed an entire package and so
are falling foul of consistency checks. There are also potential
compliance issues if you remove API classes or classes that make APIs
inoperable. You might want to look at examples such as the
include-locales plugin where jdk.localedata module is safely transformed
a link time to include only the required locales.
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