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Add the contents of an array to a combo box

I have an array (in another class) with 10 values in. I want to add the values of this 开发者_如何转开发array into a combo box. Is this possible? Thanks


Yes. In general you can do:

JComboBox b = new JComboBox(new String[]{"String1","String2"});

i.e. there is a contructor for initializing via arrays.
So you just have to override toString() in the objects contained in the array(if they are not of type String) .


Sure:

Object[] yourArray = otherClass.getMyArray();
JComboBox box = new JComboBox (yourArray);

This will call Object.toString() to get the value to display in the combo box, so if you are using a custom class make sure it overrides the toString() method.

EDIT:

There are a few ways to do this in Netbeans. Here's one way. Somewhere in your form, have a method like this:

private ComboBoxModel getComboModel (OtherClass myOtherClass)
{
  return new DefaultComboBoxModel (myOtherClass.getMyArray());
}

And then in the form designer:

  1. click on the combo box
  2. edit the Model propert in the properties editor
  3. select Value from existing component in the drop down
  4. select the Method call radio button and choose getComboModel()

There are many other ways to do it, but this will work for a simple case like yours. In general, if you want to make it Netbeans friendly, then you need to provide a method somewhere that returns an instance of ComboBoxModel and point Netbeans at it.


Try this method:

private void combofill(){
       cbxplaces.removeAllItems();
       String[] place= {"Cont", "Cancel","TEST"};  
        DefaultComboBoxModel mod = new DefaultComboBoxModel(place);
           cbxplaces.setModel(mod);
    }
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