Re: ? newer version overwrites older

On Mon, 19 Nov 2007 15:48:27 -0800 (PST), Jeff
<jeffrey.summers@xxxxxxxxx> wrote:

On Nov 19, 6:11 pm, JClark <jcl...@xxxxxxxxxxxxxx> wrote:
On Mon, 19 Nov 2007 09:48:00 -0500, Lew <l...@xxxxxxxxxxxxx> wrote:
JClark wrote:
I'm having problems getting two versions of java runtime environment
to work together. A program I need to view my charts at a hospital
requires java 1.4.2_13.

I was instructed to do the following:
Uninstall all versions of java.
Install java 1.4.2_13
configure 1.4.2_13
Install any later versions of java.

But here's what happens:

If I install only the older version, it works fine, but if I install
the latest jre 6.3, it seems to overwrite the older one, and I can no
longer access the charts.

Here are the names of the programs I'm installing, in that order, with
reboot inbetween. (The files were downloaded from the Sun site):

j2re-1_4_2_13-windows-i586-p.exe
jre-6u3-windows-i586-p.exe

Any advice would be greatly appreciated. Thanks.

You don't say that you're using Windows (or which version), but the .exe
suffix on your downloads implies that you are.

With Windows XP, at least, when you install multiple versions of Java they all
co-exist quite nicely. You can tell by reviewing the Control Panel "Add /
Remove Programs" utility that they're all there.

Programs that require Java 1.4 (and I assure you the program itself does not
require update 13 specifically) generally run quite well under later JVMs,
unless they use the identifier "enum". Why doesn't this one?

What evidence do you have that Java 6 actually *overwrote* Java 1.4?

Much more likely is that you simply aren't getting the older one by default.
When something isn't in the Windows PATH, you have to use explicit paths to
executables.

Lew,
Thanks for input. I am indeed using Windows XP/sp2.>generally run quite well under later JVMs,
unless they use the identifier "enum". Why doesn't this one?

I don't know why, but it is apparently the case. In fact, the hospital
sent out a detailed 6 page memo telling everybody how to install java
1.4 after uninstalling all other java versions, then to install the
latest java, achieving, as you point out multiple versions of java
which should co-exist. But it doesn't on my system.

When something isn't in the Windows PATH

Interesting thought. I note in my "system variables" there are two
entries which contain "java"

QTJAVA c:\program files\java\jre1.5.0_06\lib\ext\qtjava.zip
CLASSPATH .;c:program files\java\jre1.5.0_06\ext\qtjava.zip

These files no longer exist in my program files directory.

Perhaps I should delete these since they do not refer to the java
runtime environment version I need for the special program.

I do appreciate your thoughts.

Jack

Running McKesson's Physicians Portal I presume, as that required
runtime is familiar. This problem has been present for well over a
year and it is astounding that McKesson hasn't fixed it. Yet, without
the source, you are pretty much stuck trying to find work arounds.
Most hospital systems will support their users, even on home/office
machines. Might talk to them. Perhaps if enough docs have problems the
hospital IT can pressure the company to fix this.
McKesson's Physicians Portal
Yes, right you are! So far they are recalcitrant, and the hospital IT
people are not allowed to help us, I am told.
I'm still working on it! I enjoy a challenge.
The program is new for us, and so far only one office has got it
working, and that is a large group with their own IT guy. As more
folks get stumped, maybe they'll help.

Thanks.

Jack
.

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