... so forth. The first item added to a JComboBox appears as the currently selected item when the JComboBox is displayed. Other items are selected by clicking the JComboBox, then selecting an item from the list that appears.
Line 32 uses JComboBox method setMaximumRowCount to set the maximum number of elements that are displayed when the user clicks the JComboBox. If there are additional items, the JComboBox provides a scrollbar (see the first screen) that allows the user to scroll through all the elements in the list. The user can click the scroll arrows at the top and bottom of the scrollbar to move up and down through the list one element at a time, or else drag the scroll box in the middle of the scrollbar up and down. To drag the scroll box, position ...
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