private void generateRptForm(String sql, String reportloader) {
    PreparedStatement pstmt = null;
    ResultSet rs = null;
    ByteArrayOutputStream baos = null;
    Connection connect = null;
    try {
        baos = new ByteArrayOutputStream();
        Class.forName("com.mysql.jdbc.Driver").newInstance();
        connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/" + "school", user, password);
        pstmt = connect.prepareStatement("SELECT image FROM picture WHERE id = 1");
        rs = pstmt.executeQuery();
        InputStream imageStream = null;
        BufferedImage image = null;
        while (rs.next()) {
            imageStream = rs.getBinaryStream(1);
            image = ImageIO.read(imageStream);
        }
        System.out.println("image..." + image);
        connect.close();
        connect.close();

        Class.forName("com.mysql.jdbc.Driver");
        conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/" + "school", user, password);
        stmt = conn.createStatement();
        JasperDesign jd = JRXmlLoader.load(reportloader);
        String sqltrans = sql;
        JRDesignQuery newQuery = new JRDesignQuery();
        newQuery.setText(sqltrans);
        jd.setQuery(newQuery);
        // Get data from registration table

        String[] split = null;
        String schname = this.getTitle();
        split = schname.split("\[");
        schname = split[1];
        split = schname.split("\]");
        String[] regdetails = dbutils.checker.regdetails(split[0]);

        Map<String, Object> param = new HashMap<String, Object>();

        param.put("schoolname", regdetails[0]);
        param.put("address", regdetails[3]);
        param.put("zipcode", regdetails[4]);
        param.put("telephone", regdetails[5]);
        param.put("location", regdetails[1]);
        param.put("country", regdetails[2]);
        param.put("email", regdetails[6]);

        param.put("logo", image);

        JasperReport jr = JasperCompileManager.compileReport(jd);
        JasperPrint jp = JasperFillManager.fillReport(jr, param, conn);
        JasperViewer.viewReport(jp, false);
    } catch (Exception e) {
        JOptionPane.showMessageDialog(null, e);
        System.out.println(e);
    }
}

<image>
    <reportElement ... />
    <imageExpression class="java.awt.Image"><![CDATA[$P{logo}]]></imageExpression>
</image>