How can I use external JARs in an Android project?

Question

I have created an Android project and added an external JAR (hessian-4.0.1.jar) to my project. I then added the JAR to the build path and checked it off in Order and Export.

Answer 1

I know the OP ends his question with reference to the Eclipse plugin, but I arrived here with a search that didn't specify Eclipse. So here goes for Android Studio:

1. Add jar file to libs directory (such as copy/paste)
2. Right-Click on jar file and select "Add as Library..."
3. click "Ok" on next dialog or renamed if you choose to.

That's it!