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copied!<p>Works just fine here. I used the <a href="http://docs.oracle.com/javase/tutorial/displayCode.html?code=http://docs.oracle.com/javase/tutorial/uiswing/examples/components/SplitPaneDemoProject/src/components/SplitPaneDemo.java" rel="nofollow">SplitPaneDemo.java</a> file for this <a href="http://sscce.org/" rel="nofollow">SSCCE</a>, and stripped away all the unnecessary stuff</p> <pre><code>import javax.swing.JFrame; import javax.swing.JList; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.ListSelectionModel; import java.awt.BorderLayout; public class SplitPaneDemo extends JPanel { private JList<String> list; private String[] imageNames = { "Bird", "Cat", "Dog", "Rabbit", "Pig", "dukeWaveRed", "kathyCosmo", "lainesTongue", "left", "middle", "right", "stickerface"}; public SplitPaneDemo() { setLayout( new BorderLayout( ) ); list = new JList<>(imageNames); list.setSelectionMode( ListSelectionModel.SINGLE_SELECTION ); list.setSelectedIndex( 0 ); add( new JScrollPane(list) ); } /** * Create the GUI and show it. For thread safety, * this method should be invoked from the * event-dispatching thread. */ private static void createAndShowGUI() { //Create and set up the window. JFrame frame = new JFrame("SplitPaneDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); SplitPaneDemo splitPaneDemo = new SplitPaneDemo(); frame.getContentPane().add(splitPaneDemo); //Display the window. frame.pack(); frame.setVisible(true); } public static void main(String[] args) { //Schedule a job for the event-dispatching thread: //creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { @Override public void run() { createAndShowGUI(); } }); } } </code></pre>

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