Question

am new to this java world.. i just wanted to know how to convert a db populated list to json and then call this json in javascript?

i saw many examples inputting data manually into list, but i dnt understand how to convert this list.. should i create another method or something else?

Thanks for your patience and reply.

For example, i have a list of type members

public List<Member> getMember() throws SQLException
{
       //connection 
       List<Member> listmember = new ArrayList<Member>();

    ps = con.prepareStatement(myquery);
    rs = ps.executeQuery();

    while(rs.next())
    {
      Member fsta = new Member();
      fsta.setName(rs.getString(2));
      fsta.setJan(rs.getString(6));
      fsta.setFeb(rs.getString(7));
      fsta.setMar(rs.getString(8));
      listmember .add(fsta);
    }// end of while

    return listmember ;
}

Now i want to convert the listmember to json, in return call the json in my javascript.

Hope this makes it clear now

Answer 1

you can create list to json array as follow:

List<Member> listmember= getMember();

JSONArray jsonArray = JSONArray.fromObject(listmember);

refer Simple List to Json example

then to send it to your wepage. in your webpage you can pass it through javascript.