fancyerii wrote:
> I want to design a Frame which cotains 2 buttons. When I click
> button1, the frame display a JPanel(Panel1) and when I click
>
> button2, it displays another JPanel(Panel2).
>
> codes in Frame1:
> jButton1.addActionListener(new ActionListener(){
> public void actionPerformed(ActionEvent e) {
> if (selected != null)
> Frame1.this.remove(selected);
> selected = new Panel1();
>
> selected.setBounds(0, 0, 400, 300);
> Frame1.this.add(selected);
> Frame1.this.repaint();
>
> }
> });
>
>
> There is a JLabel and a JScorllPane which contains a JList in Panel1
> There is a JList and a JScorllPane which contains a JList in Panel1
> In Panel1, JLabel can display correctly. But JScrollPanel display
> nothing.
> In Panel2, JList can display correctly. But JScrollPanel display
> nothing.
>
> What's wrong with JList in JScrollPane?
>
>
> Panel1 and Panel2:
>
> public class Panel1 extends JPanel {
> public Panel1() {
> try {
> jbInit();
> } catch (Exception exception) {
> exception.printStackTrace();
> }
> }
>
> private void jbInit() throws Exception {
> this.setLayout(null);
> DefaultListModel model=new DefaultListModel();
> model.addElement("1");
> model.addElement("2");
> jList1.setModel(model);
> jScrollPane1.setBounds(new Rectangle(59, 62, 285, 131));
> jLabel1.setText("jLabel1");
> jLabel1.setBounds(new Rectangle(62, 25, 151, 23));
> this.add(jScrollPane1);
> this.add(jLabel1);
> jScrollPane1.getViewport().add(jList1);
> }
>
> JScrollPane jScrollPane1 = new JScrollPane();
> JList jList1 = new JList();
> JLabel jLabel1 = new JLabel();
> }
>
> public class Panel2 extends JPanel {
> public Panel2() {
> try {
> jbInit();
> } catch (Exception exception) {
> exception.printStackTrace();
> }
> }
>
> private void jbInit() throws Exception {
> this.setLayout(null);
> DefaultListModel model=new DefaultListModel();
> model.addElement("1");
> model.addElement("2");
> jList1.setModel(model);
> jList2.setModel(model);
> jScrollPane1.setBounds(new Rectangle(86, 61, 236, 161));
> jList2.setBounds(new Rectangle(73, 11, 65, 29));
> this.add(jScrollPane1);
> this.add(jList2);
> jScrollPane1.getViewport().add(jList1);
> }
>
> JScrollPane jScrollPane1 = new JScrollPane();
> JList jList1 = new JList();
> JList jList2 = new JList();
> }
Your code doesn't make any sense. I can only suggest that you use a
layout manager and forget the setBounds() method. Every Java
installation uses different fonts and different screen resolutions. A
layout manager will allow your code to work not only on your machine but
on everybody else's too.
Please give us a little better description and we could probably give
you some simple code to layout your design without much difficulty.
--
Knute Johnson
email s/nospam/knute2008/
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