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Thread: HELP WITH COMBO!

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    Exclamation HELP WITH COMBO!

    2 drop down box and 1 text field connected.
    The text field should be an optional; meaning, if first 2 drop down is selected, my page will still proceed even text field is empty.
    Last edited by bajeanius; July 24th, 2012 at 04:06 AM.


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    Administrator copeg's Avatar
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    Default Re: HELP WITH COMBO!

    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 http://www.javaprogrammingforums.com...introductions/

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    Default Re: HELP WITH COMBO!

    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
    }
    Check out my site -> tssolutions.net16.net

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    Default Re: HELP WITH COMBO!

    Quote Originally Posted by copeg View Post
    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

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    Default Re: HELP WITH COMBO!

    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.

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    Default Re: HELP WITH COMBO!

    Quote Originally Posted by jps View Post
    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.

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    Default Re: HELP WITH COMBO!

    Quote Originally Posted by Krumpir View Post
    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?

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    Default Re: HELP WITH COMBO!

    Quote Originally Posted by bajeanius View Post
    ... 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

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    Administrator copeg's Avatar
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    Default Re: HELP WITH COMBO!

    Quote Originally Posted by bajeanius View Post
    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
    My point above regarding being descriptive still applies - in fact, from what you've described it sounds like you are looking for a solution that uses javascript...this is a java forum, and javascript != java.

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    Default Re: HELP WITH COMBO!

    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?

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    Default Re: HELP WITH COMBO!

    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 
                }

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