Executing Java 5 Code With Java 6

Question

Is there any way I can run class files (i.e. with main as the entry point) on JDK 6 that were compiled with Java 5?

You cannot go backward to run 6 on 5 or 4, but it should be forward compatible. Like running i386 code on i686. — Zan Lynx
– Zan Lynx, Commented May 18, 2009 at 0:37

MBCook · Accepted Answer · 2009-05-18 00:09:46Z

13

Yes. Old java code can be executed on newer JVMs, but not the other way around.

You'll be fine.

answered May 18, 2009 at 0:09

MBCook

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Comments

jodonnell · Accepted Answer · 2009-05-18 00:10:10Z

1

Sure, that should work with no trouble at all. Why, are you having a problem? Be more specific.

answered May 18, 2009 at 0:10

jodonnell

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3 Comments

Alex Beardsley Over a year ago

I am not having problems doing it; admittedly I have not tried it yet. I wanted to make sure this is possible before I start heading down that road. I just remember having problems running Java 5 code on different versions, I don't remember if it was 6; I guess I was trying to run 5 on 1.4.

Catchwa Over a year ago

if you want to allow your code to run on older versions of java you can give javac the -target parameter. See java.sun.com/javase/6/docs/technotes/tools/windows/javac.html

Michael Borgwardt Over a year ago

Problem is, that won't work if you're using any of the newer language features.

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