Try looking at the -Xlint
compiler flag for javac
for a programmatic check (if that's your question). It checks most things for you.
Also, what's wrong with having a code style document that's > 10 years old? That means the language is fairly stable and older code looks much like newer code, making maintenance easier. The library may have expanded but much of the syntax is identical. Your second link is what my searches returned and seems very comprehensive.
EDIT: If you want the nitty gritty details on the new Java syntax, check out the Java Specifications.