Problem to show a simple window when dowaloading ?

Question

Hi
I created a pure java swing application. When run this app and when it start to download some files from server, it will take long time. I launched/new a simple JFrame window to show a simple "please waiting" message when downloading files. But only window frame show up, and no context. Actually I can see only empty frame and without any content. Only when downloading files is finished, content show up/come out. So I can not show some warning message to user when programm is downloading some files. Who can tell me what is problem?? I use Windw XP. Thanks in advance
gary

Answer 1

HI
I have tried to open another thread and inside another thread I new/launch my GUI class. I met same problem (only show frame and context come out after download is finished). My coding is below: Thanks
//my main class for downloading files from server
public class download(){
ShowProgress progress=new ShowProgress("waiting");
progress.start();
downloading .....
//open new thread
public class ShowProgress extends Thread {
String text;
public ShowProgress(String s) {
super(s);
text=s;
public void run(){
ShowEnd showend=new ShowEnd(text);
//GUI class to show "wait message"
public class ShowEnd extends JFrame {
BorderLayout borderLayout1 = new BorderLayout();
JPanel jPanel1 = new JPanel();
JEditorPane jEditorPane1 = new JEditorPane();
public JButton Ok = new JButton();
String text;
public ShowEnd(String s) {
super("Finished");
text=s;
try {
jbInit();
catch(Exception e) {
e.printStackTrace();
private void jbInit() throws Exception {
this.getContentPane().setLayout(borderLayout1);
jEditorPane1.setBackground(Color.lightGray);
jEditorPane1.setEditable(false);
jEditorPane1.setText(text);
jEditorPane1.setPreferredSize(new Dimension(400,120));
Ok.setText("Ok");
Ok.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
Ok_actionPerformed(e);
this.getContentPane().add(jPanel1, BorderLayout.SOUTH);
jPanel1.add(Ok, null);
this.getContentPane().add(jEditorPane1, BorderLayout.CENTER);
this.pack();
this.setVisible(true);
void Ok_actionPerformed(ActionEvent e) {
System.exit(0);
}