Atualizando o jtable

public class PesquisarFilmes extends JInternalFrame {

	private javax.swing.JPanel jContentPane = null;
	private JTable jTable = null;
	private JScrollPane jScrollPane = null;
	private JButton jButton = null;
	private JTextField jTextField = null;
	Connection connection;
	Vector linhas= new Vector();
	Vector colunas= new Vector();

	
	private DefaultTableModel defaultTableModel = null;   //  @jve:decl-index=0:
	/**
	 * This is the default constructor
	 */
	public PesquisarFilmes(Connection banco) {
		super("",true,true,true,true);
		connection = banco;
		getCabecalho();
		initialize();
	}
	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setSize(500, 263);
		this.setContentPane(getJContentPane());
	}
	/**
	 * This method initializes jContentPane
	 * 
	 * @return javax.swing.JPanel
	 */
	private javax.swing.JPanel getJContentPane() {
		if(jContentPane == null) {
			jContentPane = new javax.swing.JPanel();
			jContentPane.setLayout(null);
			jContentPane.add(getJButton(), null);
			jContentPane.add(getJTextField(), null);
			jContentPane.add(getJScrollPane(), null);
		}
		return jContentPane;
	}
	/**
	 * This method initializes jTable	
	 * 	
	 * @return javax.swing.JTable	
	 */    
	private JTable getJTable() {
		if (jTable == null) {
			jTable = new JTable();
			jTable.setModel(getDefaultTableModel());
		}
		return jTable;
	}
	/**
	 * This method initializes jScrollPane	
	 * 	
	 * @return javax.swing.JScrollPane	
	 */    
	private JScrollPane getJScrollPane() {
		if (jScrollPane == null) {
			jScrollPane = new JScrollPane();
			jScrollPane.setViewportView(getJTable());
			jScrollPane.setBounds(17, 75, 451, 140);
		}
		return jScrollPane;
	}
	/**
	 * This method initializes jButton	
	 * 	
	 * @return javax.swing.JButton	
	 */    
	private JButton getJButton() {
		if (jButton == null) {
			jButton = new JButton();
			jButton.setBounds(23, 27, 118, 29);
			jButton.setText("Nome");
			jButton.setToolTipText("Pesquisar Filme Por Nome");
			jButton.addActionListener(new java.awt.event.ActionListener() { 
				public void actionPerformed(java.awt.event.ActionEvent e) {    
					try{
						if(!jTextField.getText().equals("")){
							Statement statement = connection.createStatement();
							String query= "SELECT * FROM FILMES WHERE nome = '"+jTextField.getText()+"'";
							ResultSet rs= statement.executeQuery(query);
							display(rs);
							statement.close();
						}
						
					}
					catch(SQLException sqlex){
						sqlex.printStackTrace();
					}
				}
			});
		}
		return jButton;
	}
	private void display(ResultSet rs) throws SQLException{
		boolean moreRecords = rs.next();
		if (!moreRecords){
			JOptionPane.showMessageDialog(this,"Nenhum registro com esse nome encontrado");
			return;
		}
		try{
			defaultTableModel.setNumRows(0); 
			ResultSetMetaData rsmd = rs.getMetaData();
			do{
				linhas.addElement(getNextRow(rs,rsmd));
			}while(rs.next());
			validate();
			
		}
		catch(SQLException sqlex){
			sqlex.printStackTrace();
		}
		
	}	
	private Vector getNextRow(ResultSet rs, ResultSetMetaData rsmd) throws SQLException{
		Vector currentRow = new Vector();
		for(int i =1; i<=rsmd.getColumnCount();++i)
			currentRow.addElement(rs.getString(i));
		return currentRow;
	}
	private void getCabecalho(){
		try{
			Statement statement = connection.createStatement();
			String query= "SELECT * FROM FILMES";
			ResultSet rs= statement.executeQuery(query);
			ResultSetMetaData rsmd = rs.getMetaData();
			for(int i=1; i<=rsmd.getColumnCount();++i)
				colunas.addElement(rsmd.getColumnName(i));
			statement.close();
		}
		catch(SQLException sqlex){
			sqlex.printStackTrace();
		}
	}
	
	/**
	 * This method initializes jTextField	
	 * 	
	 * @return javax.swing.JTextField	
	 */    
	private JTextField getJTextField() {
		if (jTextField == null) {
			jTextField = new JTextField();
			jTextField.setBounds(168, 28, 276, 29);
		}
		return jTextField;
	}
	/**
	 * This method initializes defaultTableModel	
	 * 	
	 * @return javax.swing.table.DefaultTableModel	
	 */    
	private DefaultTableModel getDefaultTableModel() {
		if (defaultTableModel == null) {
			defaultTableModel = new DefaultTableModel(linhas,colunas);
		}
		return defaultTableModel;
	}
 }