Java : what can i do with it?
Christophe Heereman alias Toffel
Hi ,
what can I do with Java? Who knows?
Thank you
Fdisk
> Hi ,
>
> what can I do with Java?
The answer would fill reams of paper. It's like asking "what can I do with a pen and a blank
piece of paper?" Java usually adds "interactivity" between visitor and site, but can also do
much more than that.
Also, you can trigger a virus on somebody's local unit. ...Which is why more and more people
are disabling Java, which will mean that the answer to your question is "Nothing," for anybody
who disables it.
Following quote is "all cap's" from pasting (not from me; don't want to appear rude in a post.)
From MS Internet Explorer 3.02 license agreement (you *have* to hit YES to accept before
installing browser...)
"" 7. NOTE ON JAVA SUPPORT. THE SOFTWARE PRODUCT MAY CONTAIN SUPPORT FOR PROGRAMS WRITTEN IN
JAVA. JAVA TECHNOLOGY IS NOT FAULT TOLERANT AND IS NOT DESIGNED, MANUFACTURED, OR INTENDED FOR
USE OR RESALE AS ON-LINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT NAVIGATION OR
COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS,
IN WHICH THE FAILURE OF JAVA TECHNOLOGY COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR
SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES").
8. NO WARRANTY. ANY USE OF THE SOFTWARE PRODUCT IS AT YOUR OWN RISK. ""
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Dan Birchall
Christophe Heereman alias Toffel wrote:
>
> Hi ,
>
*sigh* It would be nice to maybe look at just one search
engine before asking... :)
Java is a programming language. You can do all sorts of
things with it, just as you can with most other programming
languages. :)
For more information, please look at comp.lang.java.misc.
Good luck! :)
-Dan
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Philip Baker
In article <01bceda0$61947200$3a6a...@cdosrun.cyberramp.net>, Fdisk
<spam-only--...@usa.net> writes
>> Hi ,
>>
>> what can I do with Java?
>
>pen and a blank
>piece of paper?" Java usually adds "interactivity" between visitor and site,
>but can also do
>much more than that.
>
>Also, you can trigger a virus on somebody's local unit. ...Which is why more
>and more people
>are disabling Java, which will mean that the answer to your question is
>"Nothing," for anybody
>who disables it.
>
trigger one off that is already present but lying dormant. If your
browser is any good it will protect you from anything nasty, virus or
otherwise, in any Java applet that it runs.
--
Philip Baker
tel +44 (0)181 954 6932
email ph...@pjbsware.demon.co.uk
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http://www.pjbsware.demon.co.uk/java/ animated computer art
PJB Software, PO Box 221, Stanmore, Middx. HA7 4UU United Kingdom
Particle
>>Also, you can trigger a virus on somebody's local unit. ...Which is why
more
>>and more people
>>are disabling Java, which will mean that the answer to your question is
>>"Nothing," for anybody
>>who disables it.
Well... Java applets can't "trigger" or even be a virus, since the Browser
won't alow it... This is why all java applets are so limited, because they
can't
do anything to the machine they're running on.
There is however a way, but the BROWSER will ask you if you'd like
to give the applet all the priveledges... but people had this sort of
thing with ActiveX and are happy with... ActiveX is a biggest security
hole I've seen... Java doesn't even come close.
Particle
bsp...@geocities.com
http://www.geocities.com/SiliconValley/Way/7650
Home of the Java Data Structures Tutorial!
Fdisk
> Well... Java applets can't "trigger" or even be a virus, since the Browser
> won't alow it... This is why all java applets are so limited, because they
> can't
> do anything to the machine they're running on.
>
> There is however a way, but the BROWSER will ask you if you'd like
> to give the applet all the priveledges... but people had this sort of
> thing with ActiveX and are happy with... ActiveX is a biggest security
> hole I've seen... Java doesn't even come close.
Yes, Active X is much scarier than Java... However you may be forgetting that an "applet"
doesn't have a safe extension, like ".txt", that the browser would ignore... Now if "safe"
file is installed, and subsequently that extension is changed to ".exe", it doesn't need to be
a virus, just a perfectly valid application that (oddly enough) sends 100% allowable code
directly to the hard drive controller... With IDE and EIDE controllers, you can send binary
data to the hard drive (or most modems) that Win95 will think is actually going to an LPT port;
so it allows the data to be sent. You can actually reflash the bios on a modem "on the fly,"
so to speak. But hard-drive controllers are the real prob'... This is my standard
copy-and-paste on Java:
Quoted from MS Internet Explorer license agreement:
"" 7. NOTE ON JAVA SUPPORT. THE SOFTWARE PRODUCT MAY CONTAIN SUPPORT FOR PROGRAMS WRITTEN IN
JAVA. JAVA TECHNOLOGY IS NOT FAULT TOLERANT AND IS NOT DESIGNED, MANUFACTURED, OR INTENDED FOR
USE OR RESALE AS ON-LINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT NAVIGATION OR
COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS,
IN WHICH THE FAILURE OF JAVA TECHNOLOGY COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR
SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES").
8. NO WARRANTY. ANY USE OF THE SOFTWARE PRODUCT IS AT YOUR OWN RISK. ""
Boy, I =love= that quote. When I installed MS IE 3, I almost *died* laughing when I got to the
parts about weapon systems and life support machines. They couldn't make a scarrier sounding
disclaimer if they *tried*. What Java can actually do, though, is to "install" a browser
plugin as an *innocent* file, like a "txt" text file (anyfile.txt), which looks safe to your
anti-virus software because Text Files can't contain viruses, but after changing the ".txt" to
".exe", making it an "executable" program, this can be run as an "associated" program, and I
doubt it even needs to install as a browser plugin. The program is usually designed, (common
example,) to do this:
1. Send a bit of binary information directly to the controller of you hard-drive, to
reconfigure your controller. The goal is to make your hard-drive controller "think" that the
actual hard-drive is physically larger than it is; making a 3-inch wide hard-drive seem like
it's 6-inches wide.
2. Send another bit of data telling the hard-drive controller to back up to the middle and
then race back to any bit of data it's unable to find.
3. Tell it to find some data that's located 1-inch *further* from the middle than your
hard-drive physically measures. The heads slide along a track, bang into the edge of the
rails, then race back to the middle again (as it's programmed to do) and starts over. Every
time it starts over, it races back to the middle to build up a full head of steam before
crashing into the edge of the rails again (they move *very* fast.) You hear a metallic,
ringing, regularly spaced "ping ping ping" for a while, the system shuts down, it never comes
back up. The most common loss is the hard drive, but it can also cause the motherboard to
short out. Meaning anywhere from a hundred bucks to several thousand bucks in damage, plus the
loss of your personal data, tax records, everything.
Nifty, huh?
Previously provided tech' support for HP... Saw viruses on about 5% to 8% of the calls, and
this was the most likely attributable "source" on (just a guestimate, here,) about 5% of the
"everything's gone, nothing I can do" virus calls. (Can only guestimate after the fact,
there's nothing on the hard drive to check, so that figure could be off...)