import java.awt.*;
import javax.swing.*;

public class TabbedPaneApp 
{


JTabbedPane tabbedPane;
  //class constructor
  public TabbedPaneApp()
    {
    tabbedPane = new JTabbedPane(
      SwingConstants.TOP);
    JFrame frame = new JFrame("TabbedPane");
     // Setup the frame to exit when it closes
     frame.setDefaultCloseOperation(JFrame.
       EXIT_ON_CLOSE);
     // Get reference to inner content pane
     Container contentPane = frame.
       getContentPane();
     // Place JTabbedPane in content pane
     contentPane.add(tabbedPane, 
       BorderLayout.CENTER);
     // Set frame size
     frame.setSize(450, 450);
     contentPane.setBackground(Color.white);
     // Show frame
     frame.show();
     
     // Create vertical box for first tab
     Box box = Box.createVerticalBox();
     
     // Create component for top
     // Place glue between components
     box.add(Box.createVerticalGlue());
     box.add(new JButton("Component 1"));
     // Create component for middle
     box.add(new JTextField("Component 2"));
     // Place glue between components
     box.add(Box.createVerticalStrut(100));
     // Create another component 
     box.add(new JButton("Component 3"));
     // Create another component 
     box.add(new JButton("Component 4"));
     box.add(Box.createVerticalStrut(40));
     box.add(new JButton("Component 5"));
     // Creates space at the bottom
     box.add(Box.createVerticalStrut(40));
     // Add box to JTabbedPane
     tabbedPane.add(box, "Box Pane");
     //Creates two more panes with empty
     //panels.
     tabbedPane.add(new JPanel(), "Pane 2");
     tabbedPane.add(new JPanel(), "Pane 3");
     
    }
     
   public static void main(String args[]) 
   {
    TabbedPaneApp tpa = new TabbedPaneApp();
   }
}