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import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
public class ModifyModelSampleModelAction {
static String labels[] = { "A", "B", "C", "D", "E", "F", "G" };
public static void main(String args[]) {
JFrame frame = new JFrame("Modifying Model");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Fill model
final DefaultListModel model = new DefaultListModel();
for (int i = 0, n = labels.length; i < n; i++) {
model.addElement(labels[i]);
}
JList jlist = new JList(model);
JScrollPane scrollPane1 = new JScrollPane(jlist);
frame.add(scrollPane1, BorderLayout.CENTER);
JButton jb = new JButton("add F");
jb.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
model.add(0, "First");
model.clear();
model.addElement("Last");
model.addElement("Last");
model.addElement("Last");
model.addElement("Last");
int size = model.getSize();
model.insertElementAt("Middle", size / 2);
model.set(0, "New First");
model.setElementAt("New Last", size - 1);
model.remove(0);
// model.removeAllElements();
// model.removeElement("Last");
// model.removeElementAt(size / 2);
// model.removeRange(0, size / 2);
}
});
frame.add(jb, BorderLayout.SOUTH);
frame.setSize(640, 300);
frame.setVisible(true);
}
}
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