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2010-03-26T10:43:14.337
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<p>I'm not 100% sure whether I understand your question -- but it may well be that you don't even need to implement your own CellRenderer. Perhaps the following code is helpful to you?</p> <pre><code>import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Test extends JPanel implements ItemListener { private JComboBox comboBox; private JList list; public Test() { comboBox = new JComboBox(); list = new JList(new DefaultListModel()); /* initialize combo box */ loadComboBox(); /* listen for combo box selections */ comboBox.addItemListener(this); /* simple layout */ setLayout(new BorderLayout()); add(comboBox, BorderLayout.NORTH); add(new JScrollPane(list), BorderLayout.CENTER); } /** * Invoked when an item has been selected or deselected by the user. */ public void itemStateChanged(ItemEvent e) { if (e.getStateChange() == ItemEvent.SELECTED) { /* add item to list */ ((DefaultListModel) list.getModel()).addElement(e.getItem()); } } private void loadComboBox() { /* let's fake some content here */ Object[] objects = { "foo", "bar", "baz", "qux", "quux", "corge", "grault", "garply", "waldo", "fred", "plugh", "xyzzy", "thud" }; /* put the objects into the combo box */ comboBox.setModel(new DefaultComboBoxModel(objects)); } public static void main(String[] args) { Test test = new Test(); JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane().add(test); frame.setSize(300, 400); frame.setVisible(true); } } </code></pre>
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