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android
It is applicable to Android. There are very few Java rules/recs that are NOT applicable to Android. However, not all of the Android-applicable Java rules/recs require special implementation details.
android-applicable
The rule/rec applies to Android development.
Android-implementation-detail-java
There is a special section which describes special information needed for applying this rule within Android. Per your analysis, currently all in Java, however I would expect in the future we will have this for other languages, and for developers it would be useful to filter just for the language they are working in… So different tags for different languages will be useful (at least, eventually if not now). In at least one case, the section actually talks about why the rule is *not* Android-applicable, I think we need to use a different label in this case.
Android-implementation-detail
Same as 'Android-implementation-detail-java'
android-inapplicable
The rule/rec does not apply to Android development.
android-list
applicability-list
The page contains a list of pages that contain rules/recs that are applicable to Android development.
android-unknown
Android applicability has not yet been determined.
android-version-applicability
bm
The page belongs in the back matter of a corresponding book.
c
This page applies to the C language.
c-list
cplusplus-list
cps
The rule/rec belongs to the Component Security (CPS) Android category.
crp
The rule/rec belongs to the Cryptography (CRP) Android category.
draft
The page is still a draft.
drd
The rule/rec belongs to the Android (DRD) category in Java.
fio
The rule/rec belongs to the File I/O and Logging (FIO) Android category.
fm
The page belongs in the front matter of a corresponding book.
general
incomplete
itt
The rule/rec belongs to the Intent (ITT) Android category.
java
The page applies to the Java language.
java-list
language-list
msc
The rule/rec belongs to the Miscellaneous (MSC) Android category.
net
The rule/rec belongs to the Network - SSL/TLS (NET) Android category.
not-android-applicable-java
It is a Java rule or recommendation, but not Android-applicable (per chart of Android applicability).
only
The page contains an Android-only rule/rec.
only-recommendation-list
The page contains a list of recommendations that are Android only (not from a language, such as Java).
only-rule-list
The page contains a list of rules that are Android only (not from a language, such as Java).
per
The rule/rec belongs to the Permission (PER) Android category.
recommendation
The page contains a recommendation.
resources
rule
The page contains a rule.
rule-list
unknown
Android applicability has not yet been determined.
version-1
version-16
void
The page should no longer be active.
wbv
The rule/rec belongs to the WebView (WBV) Android category.