Java SE (Java Platform, Standard Edition)

Hi all,
i want to place button on top right hand corner of the tabbed pane, just run the code below, i have add button(it going to insert tab into tabbedpane), i want to place that tab into top right hand corner of the tabbedpane (not inside the tab itself). if i set tab policy setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT), it will give two button at right hand corner along with those buttons i want to and one more add button.
please suggest so that i can move forward.

Thanks in advance

import java.awt.Dimension;
import java.util.HashMap;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;

/**
 *
 * @author  Dayananda.BV
 */
public class TabpaneDemo extends javax.swing.JFrame {
    
    /** Creates new form TabpaneDemo */
    HashMap<Integer, tabpanel> panelMap = new HashMap<Integer, tabpanel>();
    
    public TabpaneDemo() {
        initComponents();
        createFloorPlan();
        getContentPane().setPreferredSize(new Dimension(400,400));
        jTabbedPane1.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">                          
    private void initComponents() {
        jTabbedPane1 = new javax.swing.JTabbedPane();
        add_tab_button = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        add_tab_button.setText("+");
        add_tab_button.setMargin(new java.awt.Insets(0, 0, 0, 0));
        add_tab_button.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                add_tab_buttonActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jTabbedPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(308, Short.MAX_VALUE)
                .addComponent(add_tab_button, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(67, 67, 67))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(add_tab_button)
                .addGap(8, 8, 8)
                .addComponent(jTabbedPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 292, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>                        
            
    private void createFloorPlan(){
        tabpanel floorplan_Panel = new tabpanel(panelMap.size()+1);
        panelMap.put(floorplan_Panel.getTabIndex(), floorplan_Panel);
        jTabbedPane1.add(floorplan_Panel, floorplan_Panel.getTabName());
        jTabbedPane1.setSelectedIndex(jTabbedPane1.getTabCount()-1);
    }
    
    private void add_tab_buttonActionPerformed(java.awt.event.ActionEvent evt) {                                               
        createFloorPlan();
    }                                              
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new TabpaneDemo().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify                     
    private javax.swing.JButton add_tab_button;
    private javax.swing.JTabbedPane jTabbedPane1;
    // End of variables declaration                   
    
    class tabpanel extends JPanel{
        
        private int tabIndex = 0;
        private String tabName ;
        
        public tabpanel(int tabIndex) {
            
            this.tabIndex = tabIndex;
            if(tabIndex >= 10) {
                tabName = "Floor Map"+tabIndex;
            } else{
                tabName = "Floor Map"+tabIndex+"  ";
            }
        }
        
        public int getTabIndex(){
            return tabIndex;
        }
        
        public String getTabName(){
            return tabName;
        }
        
    }
}

Thanks
Dayananda B V