There's no need to build these from source. Normally, prebuilt packages should be suffixed with -bin; but Java packages are an exception to this. This also makes maintenance slightly easier. From https://wiki.archlinux.org/title/AUR_submission_guidelines#Rules_of_submission: Packages that use prebuilt deliverables, when the sources are available, must use the -bin suffix. An exception to this is with Java.
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