where to find org.apache package?

I build ibatis source code in eclipse, but it reported many problems:import org.apache can not be resolved.import net. can not be resolved.could anyone tell me where to find these package?thanks very much!
[240 byte] By [linda_kuoa] at [2007-10-2 20:56:38]
# 1
There are tons of packages that begin with org.apache. You will have to be more specific. Why are you building from source? Why not simply use the binaries?
cknelsena at 2007-7-13 23:41:14 > top of Java-index,Desktop,Deploying...