I have written the following java code for simple library book search. but its having some errors ... please help me on this code.

import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;

public class Library
{
 JRadioButton rbauthor = new JRadioButton("Search by Author name");
 JRadioButton rbbook = new JRadioButton("Search by Book name");
 JTextField textfld = new JTextField(30);
 JLabel label = new JLabel("Enter Search Key");
 JButton searchbutton = new JButton("Search");
 JFrame frame = new JFrame();
 JTable table;
 DefaultTableModel model;
 String query = "select * from Library";

 public Library()
 {
  frame.setTitle("Online Public Access Catalog");
  frame.setSize(500,600);
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.setLayout(new BorderLayout());

  JPanel p1 = new JPanel();
  JPanel p2 = new JPanel();
  JPanel p3 = new JPanel();

  p1.setLayout(new FlowLayout());
  p1.add(label);
  p1.add(textfld);

  ButtonGroup bg = new ButtonGroup();
  bg.add(rbauthor);
  bg.add(rbbook);

  p2.setLayout(new FlowLayout());
  p2.add(rbauthor);
  p2.add(rbbook);
  p2.add(searchbutton);
  searchbutton.addActionListener(this);

  p3.setLayout(new BorderLayout());
  p3.add(p1,BorderLayout.NORTH);
  p3.add(p2,BorderLayout.CENTER);

  frame.add(p3,BorderLayout.NORTH);
  addTable(query);
  frame.setVisible(true);
 }
 public void addTable(String s)
 {
  try
  {
   Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
   Connection conn = DriverManager.getConnection("jdbc:odbc:Library","","");
   Statement st = conn.createStatement();

   ResultSet rs = st.executeQuery(s);
   ResultSetMetaData md = rs.getMetaData();
   int cols = md.getColumnCount();
   model = new DefaultTableModel(1,cols);
   table = new JTable(model);
   String[] tabledata = new String[cols];
   int i=0;
   while(i<0)
   {
    model.removeRow(0);
    frame.remove(table);
    addTable(query);
   }
  }
  catch(Exception e)
  {
  }
 }
 public static void main(String args[])
 {
  new Library();
 }
}