8 guidelines for writing reusable Java code. Define the rules for your code; ... Interface Segregation Principle (ISP): Clients should not be forced to depend on interfaces they do not use.

This not only serves as an interface for your Java (or Kotlin) code, but also acts as a bridge for accessing Android-specific code from the SDK. For more on that, check out our guide to Android ...

JDK Enhancement Proposal (JEP) 191 defines the Java Foreign Function Interface (FFI), which are interfaces that can bind native functions to Java methods and can manage blocks of native memory.