Invisible components still take up space JPanel

Question

I have a series of components underneath each other in a JPanel set as a GridLayout. I need to temporarily hide the components but setVisible(false) doesn\'t cu

Answer 1

try to use BoxLayout with component alignment. For example:

JPanel innerPane = new JPanel();
BoxLayout innerPaneLayout = new BoxLayout(innerPane,BoxLayout.Y_AXIS);
innerPane.setLayout(innerPaneLayout);

for (int i = 0; i < 30; i++)
{
     JPane newPane = getPane();
     innerPane.add(newPane);
     newPane.setAlignmentY(Component.TOP_ALIGNMENT);
}

for (int i = 0; i < 30; i++)
{
      if (i%2==0)
         innerPane.getComponent(i).setVisible(false);
}