How to run jar file created with higher version on lower version ?

Hi,
I downloaded a jar file and trying to run it on Linux machine with Java version 1.4...
I got error that jar file complied with 1.5 version.
Is there any way to run it on 1.4 version. I don't want to upgrade Java version of my linux :)
Regards,
Ajay

EJP wrote:
On the contrary, the 'reality' is that it is better, and probably easier, once you analyse and present the comparative costs and risks correctly, to get the mandate lifted than to back-port code to platform levels for which it was not designed.The main blockade (judging by my observations) for actually doing it is that this is not a simple code change, which is what programmers really, really, really want to keep it within their comfort zone. All of a sudden you're tasked with software upgrades and the demands that it brings, such as testing to make sure everything still works properly and getting grumpy system's administrators to actually go do it.
I wouldn't be surprised that there are people out there that would rather back port a library than to take the initiative to get Java upgraded :/

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How to run jar file created with higher version on lower version ?

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