Using android.jar in Java project - RuntimeException Stub?

Question

I tried to include android.jar into Java project, remove JRE from Build Path and run this code. It throws Runtime exception. Why?

Answer 1

android.jar contains stubs only, enough to let you build your project, as @antlersoft explained.

The Robolectric project http://robolectric.org/ allows you to run tests on your Android code without using a device. They have real builds available on Maven http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.robolectric%22

I have been successfully running most of the Android backend code by using the android-all artifact.

Might not help in your specific case, since some APIs are still out of bounds, but for most other cases of java.lang.RuntimeException: Stub! including the artifacts from Robolectric should help.