Thread: HELP WITH COMBO!

Originally Posted by copeg

I might be the only one, but honestly don't have a clue what you are asking. You are better off actually asking a question and describing the problem. Better yet, read the link in my signature entitled "Getting Help"

Thread moved from Member Introductions

Okay, I need to create a webpage for querying data. Page will have a table for user to select their choice, let's say 2 drop down box then 1 optional textbox.
Name 2 drop down box as A and B, and textbox as C.
When user select nothing, A should be enabled, B and C should be disabled.
When user select something in A, B response and show only certain or corresponding choices while C is still disabled.
When user has selected something in A and B, C will then be enabled, but it is still a optional textbox, meaning user may not need to enter anything but page will still proceed to the next.
But if C is entered with a number, program should grab that number and work with that then show the result at the next page.

Is this understand-able? =/ Lol. Well, there's a picture below, I hope you will understand it better then.
Anyway, thanks for replying..
Capture.JPG

You will have to somehow determine when an item in A has been selected.
Then determine which item it was in A.
Based on that, decide what to throw into B.
Then follow your basic shampoo instructions.

Originally Posted by jps

You will have to somehow determine when an item in A has been selected.
Then determine which item it was in A.
Based on that, decide what to throw into B.
Then follow your basic shampoo instructions.

Yeah, I have tried many ways on make the two drop down box work, in fact, I can only get those two working but not the textbox.
Meaning when both selected, whether or not I enter values in textbox, it will never pick up the values in textbox and proceed to next page.

Originally Posted by Krumpir

If you want to check whether something is selected in the combobox you can use:

if(combobox1.getSelectedIndex() == -1) {
 // Nothing has been selected in the combo box
}

Thanks for the reply. But to be frank, it doesn't work on my program. =/ Any better idea?

Originally Posted by bajeanius

... I can only get those two working but not the textbox....

Don't be shy.... show us whatcha got....

come on now, pull back the covers and show us that code

bejeanius,
the combo boxes should be attached to an actionListener like this

public class Boxes extends JDialog  implements ActionListener { 
            ...
    	    box1 = new JComboBox(("1!2!3!4").split("!"));
    	    box1.addActionListener(this);
            ...
    	    box2 = new JComboBox(("A!B!C!D!E").split("!"));
    	    box2.addActionListener(this);
            ...
            // disable box2 and texfield tf
            ...
     public void actionPerformed(ActionEvent e) {
    	    String ev = e.toString();
    	    if (ev.charAt(0) >= '9'){
                   //enable box2
            } else {
                   // enable textfield tf 
            }
    }
    ...

is that what you mind?

Bajeanius
Sorry for trouble finger with your nick and with the post button
The term ev.charAt(0) is incorrect. It's as following

     public void actionPerformed(ActionEvent e) {
    	    String ev = e.toString();
            char ch = ev.charAt(ev.indexOf("selectedItemReminder=")+22);
    	    if (ch >= '9'){
                   //enable box2
            } else {
                   // enable textfield tf 
            }