This week's book giveaway is in the Java in General forum. We're giving away four copies of Think Java: How to Think Like a Computer Scientist and have Allen B. Downey & Chris Mayfield on-line! See this thread for details.
Otherwise the generated JoinTable and Section table does not include section2 data
But my question is - As I have annotated in Teacher class the above things (saving section objects before teacher object) are not necessary.