help me add, delete from a JList in a Vector
try this code and fix how to add to the JList through a vector and delete from
the JList through the vector.
this the code below

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import java.util.*;
public class TabPane extends JFrame {

    JTabbedPane tabpane = new JTabbedPane(JTabbedPane.TOP);
    private Vector vector = new Vector(0);
    //String[] data = {"2D","3B", "12C", "47E", "47F", "Shiva", "Sammuel",
"Daniel", "William", "Horatio", "Biney", "Theodore"};
    //private JList dataList = new JList();//data);
    //Component panel;
    public TabPane() {
      super("Blue Star Airlines");

      Component panel = textPanel("View");
      tabpane.addTab("View", panel);

      Component panel1 = textPane("Add");
      tabpane.addTab("Add", panel1);


      getContentPane().add(tabpane, new BorderLayout().NORTH);



      setSize(450,350);
      setLocation(100, 100);
      setVisible(true);

    }

    protected Component textPanel(String str) {

      getContentPane().setLayout(new GridLayout(1,1));

      JPanel allPanel = new JPanel();

      JPanel listPanel = new JPanel();

      Box box = new Box(BoxLayout.Y_AXIS);

      String[] data = {"2D","3B", "12C", "47E", "47F", "Shiva", "Sammuel",
"Daniel", "William", "Horatio", "Biney", "Theodore"};
      final JList dataList = new JList(data);
      dataList.setVisibleRowCount(4);
      dataList.setSelectionMode(ListSelectionModel.SINGL E_SELECTION);
      dataList.addListSelectionListener(new ListSelectionListener() {
          public void valueChanged(ListSelectionEvent sevent) {
            dataList.getSelectedIndex();
          }
      }
      );
      box.add(dataList);

      JScrollPane scrollPane = new JScrollPane();
      scrollPane.getViewport().setView(dataList);
      box.add(scrollPane);
      listPanel.add(box, new BorderLayout().WEST);


      JPanel pane = new JPanel();
      pane.setLayout(new GridLayout(0,2));

      JLabel slabel = new JLabel("Seat No");
      pane.add(slabel);
      final JTextField sfield = new JTextField(15);
      pane.add(sfield);

      JLabel nlabel = new JLabel("Name");
      pane.add(nlabel);
      final JTextField nfield = new JTextField(15);
      pane.add(nfield);

      JLabel plabel = new JLabel("Price");
      plabel.setHorizontalAlignment(JLabel.LEFT);
      pane.add(plabel);
      final JTextField pfield = new JTextField(15);
      pfield.setHorizontalAlignment(JTextField.RIGHT);
      pane.add(pfield);

      JPanel boxPanel = new JPanel();
      Box cbox = new Box(BoxLayout.X_AXIS);
      JCheckBox check = new JCheckBox("Priority");
      cbox.add(check);

      final JButton abtn = new JButton("Delete");
      abtn.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent event) {
      if (event.getSource() == abtn)
        vector.removeElement(sfield.getText());
        vector.removeElement(nfield.getText());
        vector.removeElement(pfield.getText());
      JOptionPane.showMessageDialog(null, "Data Deleted");
    }
      });
      cbox.add(abtn);
      boxPanel.add(cbox);


      allPanel.add(listPanel, new BorderLayout().WEST);
      allPanel.add(pane, new BorderLayout().CENTER);
      allPanel.add(boxPanel, new BorderLayout().SOUTH);

      return allPanel;
    }


     protected Component textPane(String str) {
      final JLabel statusLabel = new JLabel();
      statusLabel.setBorder(new BevelBorder(BevelBorder.LOWERED));
      JPanel paneall = new JPanel();

      JPanel dpane = new JPanel();
      dpane.setLayout(new GridLayout(0,2));
      JLabel slabel = new JLabel("Seat No");
      dpane.add(slabel);
      final JTextField sfield = new JTextField(10);
      dpane.add(sfield);

      JLabel nlabel = new JLabel("Name");
      dpane.add(nlabel);
      final JTextField nfield = new JTextField(10);
      dpane.add(nfield);

      JLabel plabel = new JLabel("Price");
      dpane.add(plabel);
      final JTextField pfield = new JTextField(10);
      dpane.add(pfield);

      JPanel pan = new JPanel();

      JPanel checkPanel = new JPanel();
      //checkPanel.setLayout(new GridLayout(0,2));

      Box checkBox = new Box(BoxLayout.Y_AXIS);
      JCheckBox check = new JCheckBox("Business Class");
      checkBox.add(check);
      checkPanel.add(checkBox);
      pan.add(checkPanel, new BorderLayout().WEST);

      JPanel buttonPanel = new JPanel();
      buttonPanel.setBounds(100,50,100,50);
      Box buttonBox = new Box(BoxLayout.Y_AXIS);
      final JButton abtn = new JButton("ADD");
      abtn.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent event) {



            if (event.getSource() == abtn ) {

            vector.addElement(sfield.getText());
            vector.addElement(nfield.getText());
                vector.addElement(pfield.getText());
            //Object ob = vector.set(20, sfield.getText());
            //dataList = (JList)ob;
                sfield.getText();
            nfield.getText();
            pfield.getText();
            sfield.setText( "" );
            nfield.setText( "" );
            pfield.setText( "" );

            JOptionPane.showMessageDialog(null, "Data Stored");

            }

            else if (event.getSource() == abtn ) {
            if(sfield.getText().equals(""))
                  JOptionPane.showMessageDialog(null, "Enter seat number");
            else if (nfield.getText().equals(""))
              JOptionPane.showMessageDialog(null, "Enter seat number");
            else if (pfield.getText().equals(""))
                  JOptionPane.showMessageDialog(null, "Enter seat number");
            }
          }
        }
      );
      buttonBox.add(abtn);

      JButton cbtn = new JButton("Cancel");
      cbtn.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent event) {
      System.exit(0);
    }
      }
      );

      buttonBox.add(cbtn);
      buttonPanel.add(buttonBox);
      buttonPanel.add(statusLabel, new BorderLayout().SOUTH);
      pan.add(buttonPanel, new BorderLayout().EAST);


      paneall.add(dpane, new BorderLayout().NORTH);
      paneall.add(pan, new BorderLayout().SOUTH);

      return paneall;

    }


    public static void main(String args[]) {
      JPasswordField field = new JPasswordField();
      JOptionPane.showInputDialog(null, "Enter Username:", field.getPassword());
      JOptionPane.showInputDialog(null, "Enter Password:");
      if (field.getText().equals("")) {

        JOptionPane.showInputDialog(null, "Enter Username:",
field.getPassword());
        JOptionPane.showInputDialog(null, "Enter Password:");
      }
      TabPane tab = new TabPane();
      tab.setDefaultCloseOperation(EXIT_ON_CLOSE);

    }
}