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Part of my code
ArrayList<Item> i = g.getItems();
Vector itemsVector = new Vector(i);
JList items = new JList(iemsVector);
Later in the code I create new object which I want to add to JList. How can I do that?
Populate the JList with a DefaultListModel, not a vector, and have the model visible in the class. Then simply call addElement on the list model to add items to it.