Passing values between frames

How about an Actionlistener?

ActionListener[^] @ java Tutorials.

That one can pass a value (figure selected Row of JTable in Listener and pass data as argument to new JFrame)
You can open a second JFrame/JDialog and work there - afterwards return to default JFrame.

// be careful! This would close the complete app.
// this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// last JFrame standing will terminate the app
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

Choose wisely which DefaultCloseOperation you want little Hobbit ;)