Swing & JavaFX are not part of the JCL. Those are addon libraries. NIO: https://developer.android.com/reference/java/nio/package-summary.html https://developer

Swing & JavaFX are not part of the JCL. Those are addon libraries. NIO: https://developer.android.com/reference/java/nio/package-summary.html https://developer.android.com/reference/java/nio/package-sum... "added in API 1" As in, it's been there since forever. What are you referring to specifically? NIO2: https://developer.android.com/reference/java/nio/file/package-summary.html https://developer.android.com/reference/java/nio/file/packag... Invoke dynamic: is a runtime/bytecode thing, not part of the library. The actual feature, lambdas, works just fine on Andorid Method handles: https://developer.android.com/reference/java/lang/invoke/MethodHandle.html https://developer.android.com/reference/java/lang/invoke/Met...