Blackdown java and offical sun java

linuxmandrake · 12-24-2005, 05:32 PM

Is the blackdown java JDK compatible with the offical sun microsystems version of java. ie I can develop applications using both of them. As at uni I use sun but at home I use blackdown. The sun micorsystems amd64 bit version doesn't come with a browser plugin.

spooon · 12-24-2005, 06:10 PM

Well for one thing Blackdown only has Java 1.4, while Sun uses Java 1.5; so you may want to be careful about that.

linuxmandrake · 12-24-2005, 06:41 PM

but as long as am careful about the functions am using then it's ok then right?

spooon · 12-24-2005, 07:45 PM

Quote:

Originally Posted by linuxmandrake

but as long as am careful about the functions am using then it's ok then right?

No, Java 1.5 uses a new bytecode format. If you compile on Java 1.5, the class files will not run on 1.4 and before; unless you avoid using any new Java 1.5 language features and then use "javac -target 1.4" or something like that to make it compile into 1.4 format. If you DO need to use new Java 1.5 language features, you can check out Retroweaver.

linuxmandrake · 12-24-2005, 10:05 PM

ah thanks alot thankfully i dont think i would need any 1,5 specifics. I will be able to avoid them in my case phew

jlliagre · 12-25-2005, 03:14 AM

As far as I know, Blackdown Java is not a different JVM implementation, but is actually Sun's code ported to Linux.
It was interesting before Sun released JREs/JDKs for Linux too, but these days I'm wondering if there is really a difference (outside differing subrelease version numbering, and Java 5.0 and 6.0 missing in Blackdown).