How to make .jar library from sources

Question

I have Tapjoy sources sources, which have such sructure: Tapjoy/src/com/tapjoy/*.class

It must be compiled with Android API Level 9 and higher. My project i

Answer 1

both are possible

you can also use ant or maven for this kind of functionality.

check for the jar tool for commandline approach!

check eclipse ant build for eclipse approach and check the ant jar task for ant approach