title: Compile Java API package source code in Android API Level 22 Lollipop into class byte code files?
body: <p>How do I compile Java API packages (e.g. Java.lang) source code in Android API Level 22 (Lollipop) into class byte code? Thank you!</p>
  
  <p>UPDATE: Adding more info. Sorry the question was poorly formatted earlier. I am working on a hardware platform for IoT and need the Java packages into a different platform and need class files in the process.</p>