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import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.util.*;
public class ClearJList extends JPanel
implements ActionListener{
JButton jb1, jb2;
JList list;
int i = 1;
public ClearJList(){
Vector data;
setLayout(new BorderLayout());
list = new JList();
list.setModel(new DefaultListModel());
add(new JScrollPane(list),"Center");
add(jb1 = new JButton("Add"), "East");
add(jb2 = new JButton("Clear"), "West");
jb1.addActionListener(this);
jb2.addActionListener(this);
}
public Dimension getPreferredSize(){
return new Dimension(50, 50);
}
public void actionPerformed(ActionEvent ae) {
if (ae.getSource() == jb1) {
// add
DefaultListModel dlm =
(DefaultListModel) list.getModel();
dlm.addElement
((Object) Integer.toString(i++));
}
else {
// clear
list.setModel(new DefaultListModel());
}
}
public static void main(String s[]) {
JFrame frame = new JFrame("Clear JList");
ClearJList panel = new ClearJList();
frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
frame.getContentPane().add(panel,"Center");
frame.setSize(200,200);
frame.setVisible(true);
}
}