CardLayout(int hgap, int vgap) constructor from CardLayout has the following syntax.
public CardLayout(int hgap, int vgap)
In the following code shows how to use CardLayout.CardLayout(int hgap, int vgap) constructor.
import java.awt.CardLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; //from w w w . java 2 s.c o m import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class Main { public static void main(String[] args) { JFrame aWindow = new JFrame(); aWindow.setSize(400, 400); aWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); aWindow.add(new CardLayoutPanel()); aWindow.setVisible(true); } } class CardLayoutPanel extends JPanel implements ActionListener { CardLayout card = new CardLayout(50, 50); public CardLayoutPanel() { setLayout(card); JButton button; for (int i = 1; i <= 6; i++) { add(button = new JButton("Press " + i), "Card" + i); button.addActionListener(this); } } public void actionPerformed(ActionEvent e) { card.next(this); } }