Custom Java tool tip with Swing components as content does not show up

Question

I\'m trying to show multiple images in a component\'s tooltip, found createToolTip() and implemented a custom that adds the needed components like this:

Answer 1

It might sound silly but, have you tried setting bounds for JPanel ?

setBounds(100, 100, 150, 50);

And you can try setting a gap between components in BorderLayout

JPanel content = new JPanel(new BorderLayout(1,1));