Add a reference to gradle-cache-action to Java-Gradle configuration

examples.md

@@ -133,6 +133,9 @@ We cache the elements of the Cabal store separately, as the entirety of `~/.caba
 
 ## Java - Gradle
 
+Consider using [gradle-cache-action](https://github.com/burrunan/gradle-cache-action) as it provides fine-grained
+[@actions/cache](https://github.com/actions/toolkit/tree/main/packages/cache)-based caching for Gradle builds.
+
 ```yaml
 - uses: actions/cache@v2
   with: