dock display area Margin has gap. NetBeans or Eclipse are not.Only time will minimize the space occupied
Sorry, my English is very bad.
The gap is there to allow users to drag a Dockable directly in the minimized state. But you can make it smaller, for example if you want it to have a size of 2 pixels you call:
Dimension gap = new Dimension( 2, 2 );
control.putProperty( FlapDockStation.MINIMUM_SIZE, gab );```ok,thx