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Article View: borland.public.jbuilder.java.swing
Article #8739

Re: about initializer

#8739
From: Randy
Date: Wed, 26 Jul 2000 00:00
109 lines
4065 bytes
i already have the plug-in's; I believe that the problem lies in this:
package ImagePackage;

import java.awt.*;
import java.net.*;

public class ImageCanvas extends Canvas {
  public Image image;

  public ImageCanvas() {
     super();
  }

  public ImageCanvas(String imageName) {
     this();
     image = Toolkit.getDefaultToolkit().getImage(imageName);

     MediaTracker mt = new MediaTracker(this);
     try {
        mt.addImage(image,0);
        mt.waitForID(0);
     }
     catch (InterruptedException ex) {
        ex.printStackTrace();
     }
  }

  public void paint(Graphics g) {
    g.drawImage(image,0,0,null);
  }

  public Dimension getPreferredSize(){
    return new Dimension(image.getWidth(null),image.getHeight(null));
  }

}
or there is another code that i am suspecting also.

Rich Wilkman <richw@formlessvoid.com> wrote in message
news:397E6020.C8468A93@formlessvoid.com...
> Randy:
>
> Okay, as I suspected you are trying to use JFC (Swing) in an Applet.  No
> browser supports that out of the box (a topic that is covered over and
> over and over again here in these newsgroups).  You can look at the
> Plugin if you must use JFC in the Applet.
>
> -Rich
>
> Randy wrote:
> >
> > here's the whole trace:
> >
> > java.security.AccessControlException:access denied
> > (java.lang.RuntimePermission modifyThreadGroup)
> > at javax.swing.TimerQueue.sharedInstance(TimerQueue.java:66)
> > at javax.swing.JApplet.<init>(Japplet.java:92)
> > at DeckOfCards.<init>(DeckOfCards.java:8)
> > at java.lang.Class.newInstance0(Native Method)
> > at java.lang.Class.newInstance(Class.java:237)
> > at sun.applet.AppletPanel.createApplet(AppletPanel.java:579)
> > at sun.applet.AppletPanel.runLoader(AppletPanel.java:515)
> > at sun.applet.AppletPanel.run(AppletPanel.java:293)
> > at java.lang.Thread.run(Thread.java:484)
> >
> > Rich Wilkman <richw@formlessvoid.com> wrote in message
> > news:397D15F6.247C5191@formlessvoid.com...
> > > Randy:
> > >
> > > Offhand, I'd say it means you are trying to use JFC in your Applet.
> > > It's never helpful to "edit" the trace.  Post the whole thing from top
> > > to bottom.  Note, if you are using IE you have to have the Java
console
> > > up before accessing your Applet; otherwise you won't see your trace.
> > >
> > > -Rich
> > >
> > > Randy wrote:
> > > >
> > > > i am getting java.security.AccessException: access denied; what does
> > that
> > > > mean?
> > > > Rich Wilkman <richw@formlessvoid.com> wrote in message
> > > > news:397C5A44.D1834B94@formlessvoid.com...
> > > > > Randy:
> > > > >
> > > > > No.  The "not initialized" message for Applets usually means you
> > haven't
> > > > > set things up correctly or deployed all the classes or are trying
to
> > use
> > > > > JFC, etc.  Look in the Java Console for the real error message and
> > work
> > > > > from there.
> > > > >
> > > > > -Rich
> > > > >
> > > > > Randy wrote:
> > > > > >
> > > > > > do all classes that are created require a no argument
initializer?
> > I am
> > > > > > getting that an applet isn't initialized and can't find the
problem.
> > > > > >
> > > > > > why does an applet run properly in the appletviewer but gives
> > "applet
> > > > isn't
> > > > > > initialized" when running it thru a browser?
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From: "Randy" <slyfox65@netzero.net>
Subject: Re: about initializer
Date: 2000/07/26
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