File code

// TODO add your handling code here:
        if (txtQuery.getText().length() == 0) {
            JOptionPane.showMessageDialog(null, "Please input query string!", "Message", JOptionPane.WARNING_MESSAGE);
            return;
        }
        txtResult.selectAll();
        txtResult.replaceSelection("");
        String connectionUrl = "jdbc:sqlserver://localhost:1434;databaseName=books;user=sa;password=sa";

        try (Connection con = DriverManager.getConnection(connectionUrl); Statement stmt = con.createStatement();) {
            String SQL = txtQuery.getText();
            ResultSet rs = stmt.executeQuery(SQL);

            // Iterate through the data in the result set and display it.
            // process query results
            StringBuilder results = new StringBuilder();
            ResultSetMetaData metaData = rs.getMetaData();
            int numberOfColumns = metaData.getColumnCount();
            for (int i = 1; i <= numberOfColumns; i++) {
                results.append(metaData.getColumnName(i)).append("\t");
            }
            results.append("\n");
            //  Metadata
            while (rs.next()) {
                for (int i = 1; i <= numberOfColumns; i++) {
                    results.append(rs.getObject(i)).append("\t");
                }
                results.append("\n");
            }
            txtResult.setText(results.toString());
        } // Handle any errors that may have occurred.
        catch (SQLException e) {
            txtResult.setText(e.getMessage());
        }