Using different versions of Java

[javaplus]

I have a package (say packageA) compiled with Java 1.4.
I have another package (say packageB) compiled with Java 6.

--- Can I use packageB in packageA? What are the implications?

Regards.

[roots]

if you are running in java 1.4 then you need to compile packageB with target JVM to be less than 1.5

if you are running on 1.6 there should be no problem. You can use both the package..
Hope i understood your question ..

[javaplus]

Thanks mate.