JList returns


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Thread: JList returns

  1. #1
    Join Date
    Oct 2005
    Posts
    11

    JList returns

    Can anyone please enlighten me as to what a JList returns? If I have a list of 10 items and the user selects 3, do I need a listListener to capture that information and is there a way to limit selections to three instead of the MULTIPLE_INTERVAL_SELECTION?

    Thanks.

  2. #2
    Join Date
    Nov 2004
    Location
    Norway
    Posts
    1,560
    That depends on the method you use.
    Code:
    // To get all selections use:
    
    Object [] ob=aList.getSelectedValues();
    
    // then typecast to what you know is in the list
    
    MyClass mC=(MyClass)ob[0];
    
    //to limit this to three use:
    
    if (ob.length > 3) {
      /* signal error: "can  select max  three" */
    }
    
    //to set selection limits
    
    aList.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
    PS: still that blank insert in the code tag
    its: SINGLE_INTERVAL_SELECTION
    eschew obfuscation

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