Re: problem: security using IDE's appletviewer

bH <>
Tue, 6 May 2008 21:14:28 -0700 (PDT)
On May 6, 1:19 am, Roedy Green <>

On Mon, 5 May 2008 06:49:23 -0700 (PDT), bH <>
wrote, quoted or indirectly quoted someone who said :

That said, I have looked at Canadian Mind Products

P words > policy

The instructions say to use:

grant {

you have to correct the right file. Your IDE may be using a different

Find all the .policy files on your machine and fix them.

That's a fairly dangerous thing to do. That turns off all security
for all apps anywhere.

Roedy Green Canadian Mind Products
The Java Glossary

Hi Knute,
You wrote "If you jar up your Applet, access the
image file with; getImage(getClass().getResource

The applet is correctly jar'd along with the image
and shows as expected when the jar is opened.
I have tested to see that it does work.

I do not know what, if anything, goes into the ()
of getImage(getClass().getResource())
to exctract only the image from the jar by itself,
so that the image can go into
another program in the same folder.

import java.awt.*;
import java.applet.Applet;
import java.awt.Image;

public class ImageAppletBriefX extends Applet
  private Image ioStream;
  private String errorMessage = null;
  public void init() {
      // the jar containing the image is
      // the image file in the jar is "JBsm.JPG"
      ioStream = getImage(getClass().getResource());
      // << the line in question is above
    catch (Exception netProblem )
      errorMessage = "Could not reach image";

  public void paint( Graphics display)
    if ( errorMessage == null )
      display.drawImage( ioStream, 0, 0, this );
      display.drawString( errorMessage, 10, 10 );

Thanks for your help up to this point


Hi Roedy,
I no longer desire to change the policy files.
your advice "That's a fairly dangerous thing to do. That turns off
all security
for all apps anywhere" is well taken.


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