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Sudha Surendhiran
dynamically store values into dropdown list
2 Answer(s)      2 years and 4 months ago
Posted in : JavaScript Questions


How to dynamically store values into dropdown list using html?


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March 14, 2012 at 12:54 PM


JSP Code:

Create table country(country_id,country) in database and try the following code:

<%@page import="java.sql.*"%>
<html>
<form name="form" method="post" >
<b>Select a country:</b> </td>
<select name="sel"><option value=""><---Select---></option>
<%
Class.forName("com.mysql.jdbc.Driver").newInstance();
String connectionURL = "jdbc:mysql://localhost:3306/test";;
Connection connection= DriverManager.getConnection(connectionURL, "root", "root");
PreparedStatement psmnt = connection.prepareStatement("select * from country ");
ResultSet results = psmnt.executeQuery();
while(results.next()){
String name = results.getString(2);
String id = results.getString(1);
%><option value="<%= name %>">
<% out.println(name); %>
</option>
<%} results.close(); psmnt.close(); %>
</select><br>
<input type="submit" value="Submit"/><br>

</form>
<%String option=request.getParameter("sel");
if(option==null){
}
else{%>
<input type="text" value="<%=option%>">
<%
}
%>
</html>


March 14, 2012 at 1:00 PM


Java Code:

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

class ComboExample {
    ComboExample() {
        JFrame f = new JFrame();
        f.getContentPane().setLayout(null);
        final JComboBox combo = new JComboBox();

            try {
            Class.forName("com.mysql.jdbc.Driver");
            Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root","root");
            Statement st = connect.createStatement();
            ResultSet rs = st.executeQuery("Select name from data");
                        while (rs.next()) {
                        combo.addItem(rs.getString("name"));

            }
            } catch (Exception ex) {
                }

        combo.setBounds(20, 50, 150, 20);
        f.add(combo);

        f.setSize(400, 200);
        f.setVisible(true);
    }
    public static void main(String[] args) {
        ComboExample c = new ComboExample();
    }
}


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