Sun JDK questions

[William Muriithi]

Hi pals,

I am finally performing this small migration today, but I can not find
sdk version 1.5 anywhere. I have repeatedly tried downloading from sun
website, but they redirect it to sdk version 1.6. Really unfriendly.

I really want to use an older sdk to avoid breaking other classes that
were developed earlier. Would there be someone here who know where I
can pull sdk 1.5 for x86_64. At pbone, there is a couple but none
unfortunately for CentOS 5 / RHEL5


http://java.sun.com/javase/downloads/index_jdk5.jsp
http://java.sun.com/j2se/1.5.0/install-linux-64.html#requirements

Pardon for top posting.

Regards,

William

>> I need some advice here. I have an JDK version 1.4 running on Sunfire
>> hardware. I am planning to migrate this development environment to a
>> x86_64 system. It looks like JDK version 1.4 is not supported on
>> X86_64, so I will have to use JDK version 1.5.
>>
>> Question it, what are the possibles problem I can expect when
>> attempting above considering there is some jave classes that are not
>> supplied by sun on the old server? Will they work on the new setup?
>>
>> I am not a java developer, so the questions are a little trivial. I do
>> however believe the hardware architecture difference will not be a
>> problem due to java virtual machine isolating hardware. Moving classes
>> from 1.4 to 1.5 is what I am not sure how it will work.  Are they
>> forward compatable?
>
> Java 1.4-compatible class files should run without change on a Java
> 1.5-compatible VM.  There are only two things I can think of that
> might cause you problems: native libraries that are no longer
> available and some kind of weird dependency on buggy behaviour in the
> 1.4 VM.  If the app you're moving is 100% Java (depending only on the
> JRE and possibly other 100% Java libraries), you don't have to worry
> about native libraries.  As for dependencies on obscure bugs in 1.4,
> the only way to discover those is to run the app on a different VM and
> wait for it to break (or not).
>
> Ian
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