Setting up a JScrollPane ?

Im trying to create a JScrollPane that contains a JList which is populated with entries which are just Strings. For some reason i get nothing visually at all. When i set the JScrollPane to use scrollbars all of the time what is the default size of the JScrollPane?

Code:

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public GUI(){
JScrollPane jsp = new JScrollPane();
  jsp.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
  jsp.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
}

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Ok i can now see my JList which is in a JScroll pane. Now how would i go about adding objects to the JList? When i pass in a String[] array to the constructor the JList ends up being empty.

I had an anoying time with JList when i first started playing with them, as i found no easy way to add and remove objects and have the list update properly, so i wrote a List model that implemnts Default List Model and the List interfaces (see attached)


Just Create list:

Code:

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GenericListModel model = new GenericListModel();
JList list = new JList(model);

this.add(new JScrollPane(list));

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now you can use any methods on the model and they will be reflected in the JList...


Is that what you needed or meant?

Andy

So essentially what needs to be done is that i have to create a class that implements the javax.swing.ListModel interface, provide implementation for the four methods that are contained within in the interface then pass in an instance of this class to a JList constructor.