Doubt using Group Layout

Question

Hello everybody, i have been using GroupLayout and I encountered a little problem that i could not solve. I would like to see if any of you are able to give me a hand with this.
I try to add two components to a container (one over the other in Y AXE) , using the following code
layout.setHorizontalGroup(layout.createSequentialGroup()
     .add(layout.createParallelGroup((GroupLayout.LEADING)))
          .add(tbToolPanel)
          .add(canvas.getGeneralPanel())
layout.setVerticalGroup(layout.createSequentialGroup()
     .add(tbToolPanel)
     .add(canvas.getGeneralPanel())
);The problem is that it just add the canvas.getGeneralPanel() component, the other does not appear, unless i comment the .add(canvas.getGeneralPanel()) lines.
Do you have any idea of why this happens?
Any suggestion would be helpfull.
Thanks!

Answer 1

GroupLayout is mostly used by IDE's so they can use a single layout manager to manage all components on a frame.
For us humans its easier to mix and match layout managers to get the desired layout.
I try to add two components to a container (one over the other in Y AXE)Sounds like a BoxLayout would be more suitable.
If you need further help then you need to create a [Short, Self Contained, Compilable and Executable, Example Program (SSCCE)|http://homepage1.nifty.com/algafield/sscce.html], that demonstrates the incorrect behaviour.