Why to add JPanel to a JLabel, under what circumstance, this situation can arise?

Question

Today while surfing through various questions, I encountered one QUESTION, this seems to me a bit weird, why would one wants to add a JPanel to a JLabel

Answer 1

this seems to me a bit weird, why would one wants to add 
a JPanel to a JLabel,

yes thats right

are there any genuine reasons as to such situation can arise, 
so is it just trivial?

no, isn't trivial, because only JFrame/JDialog/JWindow and JPanel have got pre_implemented LayoutManager, for rest of "Custom JComponent" you have to declare proper LayoutManager, programatically