How does the Android build process work?

Question

I've found a good article on how the Android build process works, which shows the following process:

However, I've also seen another article which says that it uses javac to convert all files to .class files, then the dx tool in the adk converts all .class files to classes.dex, like so:

Please can someone clarify which one is correct?

Answer 1

You can take a look at the official document Building and Running http://developer.android.com/tools/building/index.html