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populating drop down list from database table

George Gates
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Joined: Jul 11, 2008
Posts: 34
hi
i have following questions:
1) How can we populate a drop down list from a database table? My drop down list should contain all the section numbers that satisfy a particular condition. I have written a query that would fetch all the correct section numbers. Now I want to add them into a drop down menu. Can someone tell me any way to achieve it?

2) Is there any way by which we can populate a drop down using all the elements in the array? For example:
Let the array be
String s []={"abc","def","xyz"};
How do i get the three string instances into the drop down menu?

3) Any other data structure (HashMap or Hashtable) will also do.

Thanks


Regards,<br />George Gates
Bear Bibeault
Author and ninkuma
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Joined: Jan 10, 2002
Posts: 61206
    
  66

If the value and the display text for the select options will be the same, any list element will do to store the values. Do not, under any circumstances pass the resultset to UI code. Copy the values to a List or array and pass that after closing the resultset.

If the value and display text are to be different a sorted Map (TreeMap for example) can be useful to pass the value/text pairs.

Once the list is passed to the page controller, it can place the list as a scoped variable in request scope.

From there, the JSP can use JSTL and EL to easily create the <select> and its <option> elements from the list.
[ July 13, 2008: Message edited by: Bear Bibeault ]

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Bear Bibeault
Author and ninkuma
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Joined: Jan 10, 2002
Posts: 61206
    
  66

Please be sure to post in the proper forum. I am closing this in view of your JSF forum post.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: populating drop down list from database table