app/src/main/java/jp/ne/donuts/uniclipboard/Clipboard.java
./gradlew app:clean
./gradlew app:clean app:assembleDebug app:makeJar
./app/release/uniClipboard.jar
app/libs/classes.jar
Unityからコピーしてます. Mac の場合
/Applications/Unity/PlaybackEngines/AndroidPlayer/Variations/mono/Release/Classes/classes.jar