Mailinglist Archive: opensuse-factory (850 mails)

[Pascal Bleser <pascal.bleser@xxxxxxxxx>]

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Andreas Jaeger wrote:
> Manfred Tremmel <Manfred.Tremmel@xxxxxx> writes:
> 
>> Am Mittwoch, 13. September 2006 17:04 schrieb Andreas Jaeger:
>>> We would still deliver both - the question is which to use for
>>> building by default...
>> If you compile a java program using java 1.4.2 it's running also with 
>> java 1.5.0. If you compile it with java 1.5.0 it will not run with java 
>> 1.4.2. So what's worth to deliver both, when nothing works with with 
> 
> Thanks, didn't know that.

It's not quite correct though.
You can build with 1.5.0 or 1.6.0 but tell the java compiler to use the
souce compatibility level of 1.4.x

javac -source 1.4 ...

Of course, if you do that, you cannot use the new language features of
1.5 (annotations, generics).

>> 1.4.2 when it's build with 1.5.0.
> 
> You could still install both on your system...

Right.

>> For my own, I can't switch to 1.5.0, there are a lot of SAP-servers (AIX 
>> and SUSE) at work I have to write Java modules and I also can't switch 

You can use the 1.5 (or 1.6) compiler and compile for 1.4.x (see above).

>> to 1.5.0 on my knightsoft-net Webserver, it needs to much memory for 
>> the small vserver.

The same bytecode uses more RAM when running with 1.5 than with 1.4 ? oO

But still, I think having both is the better approach.

cheers
- --
  -o) Pascal Bleser     http://linux01.gwdg.de/~pbleser/
  /\\ <pascal.bleser@xxxxxxxxx>       <guru@xxxxxxxxxxx>
 _\_v The more things change, the more they stay insane.
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