Does Installing J2SE 5.0 Break any Applications?

1. Does J2SE 5.0 contain a newer JRE, and if so does installing J2SE 5.0 Break any Applications due to the new JRE?
2. What information frrom the operating system do Java Applications need in order to find the "correct" version of JRE. Do they get information from the registry or the path.
3. Is there a reason to continue using an older JRE, and if so, how would one do it?
4. Does Sun publish any application notes that address the above questions?

1. Does J2SE 5.0 contain a newer JRE, and if so does
installing J2SE 5.0 Break any Applications due to the
new JRE?A few small incompatibilities. A simple test should reveal them quite quickly.
>
2. What information frrom the operating system do
Java Applications need in order to find the "correct"
version of JRE. Do they get information from the
registry or the path.If you use Java Web Start it will do this automatrically.
>
3. Is there a reason to continue using an older JRE,
and if so, how would one do it?You would use an old version if you have third party software which is not supported for a newer version.
Use Java Web Start.
>
4. Does Sun publish any application notes that
address the above questions?Yes.

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