Re: repaint doesn't work

  To: comp.lang.java.gui


This is the code. Output must be "writed Wait", then "writed Done", and
I must see "Wait", and then "Done" on Frame. But I see only "Done" and
"writed Done" at end.

import java.awt.*;
import java.awt.event.*;

class test
 {
  public static void main(String[]args)
   {new window();}
 }

class window extends Frame
 {
  private int max=10;

  private void work(write w)
   {
    long stop=(new java.util.Date()).getTime()+max*1000;
    while (((new java.util.Date()).getTime()<stop)&&(!w.done)) {}
//wait for paint finished, max 10 sec.
//never exit from loop because of w.done==true!!!!!!
//here I execute method_that_processes_data_employing_some_seconds();
   }

  public window()
   {
    super();
    setSize(100,100);
    setLocation(200,200);
    Button b=new Button("Push");
    done a=new done();
    b.addActionListener(a);
    add("Center",b);
    addWindowListener
     (
      new WindowAdapter()
       {
        public void windowClosing(WindowEvent e)
         {System.exit(0);}
       }
     );
    setVisible(true);
   }

//inner class
  class done implements ActionListener
   {
    public void actionPerformed (ActionEvent e)
     {
      removeAll();
      write wait=new write(100,100,"Wait");
      add("Center",wait);
      wait.repaint();
      validate();
      repaint();
      work(wait);
      removeAll();
      write done=new write(100,100,"Done");
      add("Center",done);
      validate();
      repaint();
     }
   }
 }

//Component with Image; here I insert a simple String
class write extends Canvas
 {
  private String phrase;
  public boolean done;

  public write(int dimx,int dimy,String phrase)
   {
    super();
    setSize(dimx,dimy);
    this.phrase=phrase;
    done=false;
   }

  public void paint(Graphics g)
   {
    g.drawString(phrase,20,30);
    done=true;
    System.out.println("paint finished: writed "+phrase);
   }
 }

---
 * Synchronet * The Whitehouse BBS --- whitehouse.hulds.com --- check it out free usenet!
--- Synchronet 3.15a-Win32 NewsLink 1.92
Time Warp of the Future BBS - telnet://time.synchro.net:24