Implementar uma Pesquisa

private void jText_ProcuraKeyPressed(java.awt.event.KeyEvent evt) {                                         
        DefaultTableModel tabela_clientes = (DefaultTableModel) jTable_Clientes.getModel();
        final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(tabela_clientes);
        jTable_Clientes.setRowSorter(sorter); 
        String text = jText_Procura.getText().toUpperCase();
        if (text.length() == 0)
        {
             sorter.setRowFilter(null);
        }
        else
        {
             try
             {
                   sorter.setRowFilter(
                   RowFilter.regexFilter(text));
             }
             catch (PatternSyntaxException pse)
             {
                   System.err.println("Erro");
             }
        }
    }