# q about applet security

Kritchai Kuntakom (kkuntakom@hotmail.com)
Thu, 8 Apr 1999 13:06:05 -0500

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    From: "Kritchai Kuntakom" <kkuntakom@hotmail.com>

    To: <java-security@java.sun.com>

    Subject: q about applet security

    Date: Thu, 8 Apr 1999 13:06:05 -0500

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Refer to "Designing and Building Advanced JavaTM Applications" By Calvin =
Austin, and Monica Pawlan

Your tutorial is easy to understand. I still have some questions =
though.
I have tried your example using 'applet viewer', it works fine. =20
Now how am I going to run it using the browser, both IE and NS?
I currently use NS 4.51, I believe that it uses VM Java1.2.

Here is how I do it.

1. I put the 'Write.jp' in folder 'c:\test\'

Q: Does it have to be located in $JAVA_HOME/jre/lib/security or=20
$USER_HOME and be named as 'java.policy', for it to work?
A:

2. In 'c:\program files\JavaSoft\jre\1.2\lib\security', I put a line=20
'policy.url.3=3Dfile:/c:/test/Write.jp' in file 'java.security'.
I guess browser will read this file to locate policy file.

note: I have Java1.2 installed. So I'm not sure browser uses VM=20
that comes with Java1.2 or one comes with browser.

Also I'm not sure where is the folder for VM that come with =
browser,=20
I guess it is 'c:\program files\JavaSoft\jre\1.2\lib\security'. =

Is that right?

So are we refer to 'java.security file in =
'c:\JKD1.2\jre\lib\security'=20
or c:\Program Files\JavaSoft\jre\1.2\lib\security'?

3. now when browser load applet that tries to access local file it =
should read=20
policy file from 'c:\test\'. But somehow it does not work, nothing =
is=20
happening. Why???

Hope to hear from you soon.

Thank you,

Mr.K
kkuntakom@hotmail.com

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">
Refer to "Designing and = Building Advanced=20 JavaTM Applications" By Calvin Austin, and Monica = Pawlan
Your tutorial is easy to = understand. I=20 still have some questions though.
I have tried your example using = 'applet=20 viewer', it works fine.
Now how am I going to run it using the = browser, both IE and NS?
I currently use NS 4.51, I believe that it = uses VM=20 Java1.2.
Here is how I do it.
1. I put the 'Write.jp' in folder=20 'c:\test\'
Q: Does it have to be = located in=20 $JAVA_HOME/jre/lib/security or
= $USER_HOME and=20 be named as 'java.policy', for it to work?
= A:
2. In 'c:\program=20 files\JavaSoft\jre\1.2\lib\security', I put a line
=20 'policy.url.3=3Dfile:/c:/test/Write.jp' in file = 'java.security'.
I=20 guess browser will read this file to locate policy file.
note: I have Java1.2 = installed. So=20 I'm not sure browser uses VM=20
that comes with = Java1.2 or=20 one comes with browser.
=20 Also I'm not sure where is the folder for VM that come with browser,=20
I guess it is = 'c:\program=20 files\JavaSoft\jre\1.2\lib\security'.=20
Is that = right?
=20 So are we refer to 'java.security file in 'c:\JKD1.2\jre\lib\security'=20
or c:\Program=20 Files\JavaSoft\jre\1.2\lib\security'?
3. now when browser load applet that = tries to=20 access local file it should read
policy file from=20 'c:\test\'. But somehow it does not work, nothing is =
=20 happening. Why???
Hope to hear from you = soon.
Thank you,
Mr.K
kkuntakom@hotmail.com
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