What is the "fix it" for getting to the net?

bher...@hotmail.com

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Nov 15, 2005, 9:49:30 AM11/15/05

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Hi All,

Given that I have recently acquired BlueJ 2.0.5, that I have Win2k with
NT and Internet Explorer as my browser.

I have an applet that I several years ago made that uses "Bookmark" as
a reserved word. I can compile it with my copy of JB5 (jre 1.3). And
it still runs on successfully my computer by fetching several websites
from the net with a click of the buttons that are on the applet.

Obviously BlueJ 2.0.5, balks at compiling this which uses jdk1.5.0_05,
because Bookmark as a "word" has been depreciated and other issues?.

So as a restart to study the program design I copied from:

The Java Developers Almanac 1.4 e553. Making the Browser Visit a URL
// See also e551 The Quintessential Applet

try {
URL url = new URL(getDocumentBase(),
"http://hostname.com/page.html");
applet.getAppletContext().showDocument(url);
} catch (MalformedURLException e) {
}

And BlueJ will allow me to use my desktop version of "WebServer.exe"
to get a localhost address but will not allow me access to the net
because of security isues.

Again what is the "fix" for getting to the net ?

Bob

Andrew Thompson

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Nov 15, 2005, 10:34:21 AM11/15/05

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bher...@hotmail.com wrote:
...

> The Java Developers Almanac 1.4 e553. Making the Browser Visit a URL

LOL! It starts wrong, presuming you can
*make* a browser do *anything*.

> // See also e551 The Quintessential Applet
>
> try {
> URL url = new URL(getDocumentBase(),
> "http://hostname.com/page.html");

That will not result in a logical URL. Did you try printing
the document base, to look at it?

> applet.getAppletContext().showDocument(url);
> } catch (MalformedURLException e) {

// always! [1]
e.printStackTrace*();

> }

[1] <http://www.physci.org/codes/javafaq.jsp#stacktrace>

> And BlueJ will allow me to use my desktop version of "WebServer.exe"
> to get a localhost address but will not allow me access to the net
> because of security isues.

Really? It throws a SecurityIssuesException, does it?
Iy is best to quote any error output precisely,
copy/pasting error and exception messages is best.
<http://www.physci.org/codes/javafaq.jsp#exact>

> Again what is the "fix" for getting to the net ?

Let's sort what the real problem is, first.

bher...@hotmail.com

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Nov 16, 2005, 1:16:56 AM11/16/05

to

Andrew,

Responding to your remark that I did not show you the list of errors,
here is the

discussion and error list.
Here is the java program mentioned earlier from Java Developers
Almanac.....
Quintessential Applet adapted for net and localhost sources.

import java.awt.*;
import java.awt.image.*;
import java.applet.*;
import java.net.URL;
import java.net.MalformedURLException;

public class withUrlGetHTMLJpg extends java.applet.Applet {
Image image;
public void init() {
// Load image
image =

getImage(getDocumentBase(),"http://image.weather.com/images/maps/current/c

urwx_720x486.jpg");
//image = getImage(getDocumentBase(),

"http://localhost/bherbst/jgarner_alias_150x200.jpg");
}
public void paint(Graphics g) {
// Draw image
g.drawImage(image, 0, 0, this);
}
}

Class compiled - no syntax errors.

upon running the browser option of BlueJ
these errors are noted in the java console:

java.security.AccessControlException: access denied
(java.net.SocketPermission

image.weather.com resolve)
at java.security.AccessControlContext.checkPermission(Unknown