CardsLayout in Java Swing

Question

I have taken a JPanel (say cardsPanel) and have set its layout as CardsLayout. After that I have added 3 cards on it (say card1, card2, and card3) all of JPanel type.

Now I want to get the topmost card of the cardsPanel whenever a user clicks on a button "Show".

So, How can I get the top-most card of the cardsPanel.

Answer 1

The CardLayout has four methods which might be of use to you.

• first(Container parent)
• last(Container parent)
• next(Container parent)
• previous(Container parent)

The Container you pass in is the reference to the parent of your cards 1 to 3. So in the actionPerformed of the 'Show' button just use the appropriate method (first I guess?).