The question https://softwareengineering.stackexchange.com/questions/120560/what-are-the-things-java-got-right is a poll. It has 41 answers. Beyond the top answer (which is repeated countless times in blogs out there), the answers quickly devolve into poor ones that are debatable or repeating previous answers (garbage collection is mentioned in the question, and three of the top four answers by votes, similarly platform independence, library).
- A googlable name. Try googling for "C"...
- A standard library that is somewhat consistent.
- A fast and open standardization process.
Checking bounds of all array accesses and validity of all casts.
Nobody seems to have mentioned Enumerations. They've done quite a nice job on those.
Competition
Either this should be a wiki lock (and I really don't like it - again, its in countless blog posts out there), or deleted. The question only has ~1470 views. Its really not worth keeping around beyond as serving as an example of why we do big lists questions poorly.