Hello,
I'm trying to create Frame with 2 JButtons and 1 JList.
Buttons are Add and Remove. After clicking Add button JFileChooser creates and user choses a file.
The file then must to be added to the JList.
public class GmFrame extends JFrame {
private JButton bAdd;
private JButton bRemove;
public JList jl;
public Vector<File> vf = new Vector<File>();
public GmFrame() {
super("GM & OBP");
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setBounds(200,200,800,400);
Container c = this.getContentPane();
c.setLayout(new FlowLayout(FlowLayout.LEFT, 10,10));
JPanel p = new JPanel();
p.setLayout(new BorderLayout(10,0));
bAdd = new JButton("Add");
bRemove = new JButton("Remove");
jl = new JList(vf);
jl.setPreferredSize(new Dimension(500,100));
vf.add(new File("C://"));
vf.add(new File("D://"));
p.add(bAdd, BorderLayout.WEST);
p.add(bRemove, BorderLayout.EAST);
p.add(jl, BorderLayout.CENTER);
c.add(p);
this.addActionListeners();
this.setVisible(true);
}
private void addActionListeners() {
bAdd.addActionListener(new AddListener(this));
bRemove.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
System.out.println(jl.getSelectedValue().getClass().getName() );
int i = jl.getSelectedIndex();
jl.remove(i);
}
}
);
}
}
class AddListener implements ActionListener {
GmFrame gf;
AddListener(GmFrame gf) {
this.gf = gf;
}
public void actionPerformed(ActionEvent arg0) {
JFileChooser fileChooser = new JFileChooser(new File("C:/Program Files/"));
int ret = fileChooser.showDialog(null, "Open file");
if (ret == JFileChooser.APPROVE_OPTION) {
File file = fileChooser.getSelectedFile();
gf.vf.add(file);
}
System.out.println(gf.vf.size());
}
}My problem is that chosen file doesn't shown on the frame. But the file is added to the Vector that linked with JList.
What have I do to "refresh" the frame?
Could someone please show me my mistake?
Thanks in advance
