JBuilder (problem managing code )

Please help I am new to Jbuilder, I real the tutorial but am still having trouble understanding how Jbuilder manages code. Basically I want to create a package called my_package with 4 classes (Class1, Class2,...,Class4). I then want to write a class called MyMainClass1(with a main method) which uses the classes in my_package). I also want to create another class with a main method called MYClass2 which uses the classes in my_package to do something slightly different. Please explain how to organize all of this in JBuilder. What I did is given below and for some reason MyProejct2 cant find the package my_package

with the following tree MyMainClass1 can import my_package and use the classes but in MyProject 2 I want to use my_package and cannot

MyProject1
my_package
Class1
Class2
Class3
Class4
MyMainClass1


MyProject2
MyMainClass2

You can set it up in your project properties.

You could jar your first project and add it as a required library in your second.

Project->Project Properties->Rquired Libraries tab->Add button

There's also a wizzard for creating jars