I am new to Mason and would like to run some Network simulations, but I
can't seem to get my feet off the ground.  I seem to be able to get things
to run fine from Netbeans but when I try to compile from the terminal java
can't seem to find the Mason packages.  I think this is a very basic error
but here it is:

david@Calculo:~/netbeans/mason/sim/app/tutorial1and2$ javac Tutorial1.java
Tutorial1.java:3: package sim.engine does not exist
import sim.engine.*;

Any help is greatly appreciated.