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  1. #1
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    Oct 2010
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    Default Link between JComboBox variables


    I want to create multiple dorpdownlists in a JApplet.
    For example
    Dropdownlist A, containing: A1, A2, A3
    Dropdownlist B, containing: B1, B2, B3
    Dropdownlist C, containing: C1, C2, C3

    What I want to create, is that when I select A1 in Dropdownlist A, list B and C automatically show B1 and C1. The same when I select B2, list A and C automatically show A2 and C2. etc...

    How should I do this? I think I need to declare JComboBoxes for the dropdownlist right? But how about the automatic selection "Link" between the dropdown lists? What kind of listeners are needed for this? And do I need to make use of the repaint method or something to automatically refresh the JApplet with all new items in de dropdown lists?

  2. #2
    DarrylBurke's Avatar
    DarrylBurke is offline Forum Police
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    Sep 2008
    Madgaon, Goa, India
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    Read the API for JComboBox and follow the link to the Swing tutorial on How to Use Combo Boxes, where you will find the answers to your questions. Once you have some code that attempts to meet the requirement, feel free to ask a specific question about any problems.

    If you do it correctly, you won't have any need to call repaint().


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