Groups > comp.lang.java.programmer > #14504

JavaT Runtime Environment Version Selection

From	"Richard Maher" <maher_rj@hotspamnotmail.com>
Newsgroups	comp.lang.java.programmer
Subject	JavaT Runtime Environment Version Selection
Date	2012-05-14 18:27 +0800
Organization	HTTP is The Box - Let's think outside
Message-ID	<joqmn9$aes$1@speranza.aioe.org> (permalink)

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On May 10, 11:36 am, Richard Maher <mahe...@googlemail.com> wrote:
> Hi,
>
> In my Applet's <object> tag I specify the "java_sersion" parameter as
> follows: -
>
> <param name="java_version"       value="1.7+">
>
> I'd expected this clause to trigger the Java plugin (as long as after
> 1.6_10) to throw/report some sort of excption if there was now Java
> version available >= 1.7. Unfortunately, the Java plugin (1.6_31 in
> this case) seems very happy just to attempt to run the Applet on that
> version and ignore the later version requirement.
>
> Is this to be expected?
>
> Have I specified the parameter incorrectly?
>
> I thought it might just have been crappy Safari on OS/X but it also
> limps-on or completely ignores this parameter on FireFox and Windows.
>
> I would like the Applet load to fail if there is no 1.7+ version; how
> can I achieve this?
>
> Cheers Richard Maher


On May 11, 10:27 pm, Richard Maher <mahe...@googlemail.com> wrote:
> Honestly, here's a very simple applet: -
>
> <HTML>
> <HEAD>
> <TITLE> A Simple Program </TITLE>
> </HEAD>
> <BODY>
>
> Here is the output of my program:
> <APPLET CODE="HelloWorld.class" WIDTH=150 HEIGHT=25>
> <param name="java_version" value="1.4*">
> </APPLET>
> </BODY>
> </HTML>
>
> import java.awt.Graphics;
> public class HelloWorld extends java.applet.Applet {
>
>     public void init() {
>             resize(150,25);
>     }
>     public void paint(Graphics g) {
>             g.drawString("Hello world!", 50, 25);
>     }
>
> }
>
> Can *anyone* show me *any version* or Java +/- browser wher the
> "java_version" applet parameter does *anything* other than take up
> space? APPLET, OBJECT, or EMBED tags.
>
> What is supposed to hapen when I ask/demand 7.0 and 7.0 does not
> exists???
>
> Is larry pre-occupied on courtroom battles to concentrate on something
> that should be so simple?
>
> Cheers Richard Maher

Once again, for those following at home, I did some more tests and realized 
that if you have multiple JREs available then you can choose a specific 
lower version that is on your system (For example if you have 1.7 and 1.6 
available and some applet is already running in 1.7 then yours can elect to 
run in a 1.6 JVM and it will be duly created) The problem, as I see it, is 
that if you elect/mandate a JRE version that is not available then the new 
plugin will just opt for limp-home mode and gives you the latest version 
available, push it up the flag-pole and see if anyone salutes, in a 
suck-it-and-see strategy :-(

Details can be found here: -
http://www.oracle.com/technetwork/java/javase/index-141751.html#BEHAVIOR

I am aghast at this and implore those in a position to do something (the 
http://forums.java.net/jive/forum.jspa?forumID=77 link doesn't seem very 
active) to introduce a "just do what you're bloody well told" flag!

Really, what is the point of the "+" and "*" when "+" is what everyone gets?

Cheers Richard Maher

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JavaT Runtime Environment Version Selection "Richard Maher" <maher_rj@hotspamnotmail.com> - 2012-05-14 18:27 +0800
  Re: JavaT Runtime Environment Version Selection Lew <noone@lewscanon.com> - 2012-05-14 07:26 -0700

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