Thread: card layout

What's Wrong With My Code?

package cards;
 
import java.awt.CardLayout;
 
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
 
public class Card {
 
	private CardLayout cardLayout; 
	private JFrame outJFrame;
	private JPanel panel1, panel2 , panel3 ;
	private JButton but1, but2, but3 ;
	private CardLayout cards ;
 
	public Card()
	{
		cardLayout = new CardLayout();
		outJFrame = new JFrame("Cards");
		outJFrame.setSize(500, 400);
 
		but1 = new JButton("but 1");
		panel1.add(but1);
 
		but2 = new JButton("but 2");
		panel2.add(but2);	
 
		but3 = new JButton("but 3");
		panel3.add(but3);			
 
		panel1 = new JPanel();
 
		outJFrame.add(panel1);
 
		panel2 = new JPanel();
		outJFrame.add(panel2);		
 
		panel3 = new JPanel();
		outJFrame.add(panel3);		
 
 
		 outJFrame.add( panel1, "First");
	              // add panel1 with name "First"
		 outJFrame.add( panel2, "Second");
	              // add panel2 with name "Second"
		 outJFrame.add( panel3, "Third");
		 outJFrame.setLayout(cardLayout);
 
 
 
		outJFrame.setLocationRelativeTo(null);
		outJFrame.setVisible(true);
	}
}

Give us a hint. Why do you ask the question in the thread title?

A hint: Programming is a sequential set of small steps to accomplish a larger objective, and the order of those steps almost always matters. If there's a reason to set the layout manager of the container before contents are added, then perhaps the step of setting the layout manager from other than the default should occur BEFORE the steps that add the contents.

just i want to learn a card layout , i read some and try to help myself

could you please write it to me , i am confuse