Not as a separate docs-only download, as far as I can see, and I thought it once was.
I just downloaded the 90MB jdk bundle to see if it was in there and it isn't. The README.html in there says this:
The on-line JavaTM Platform, Standard Edition (Java SE) Documentation contains API specifications, feature descriptions, developer guides, reference pages for JDKTM tools and utilities, demos, and links to related information. This documentation is also available in a download bundle which you can install on your machine. To obtain the documentation bundle, see the download page
. For API documentation, refer to the The JavaTM Platform, Standard Edition API Specification
This provides brief descriptions of the API with an emphasis on specifications, not on code examples.
Neither of those two links seem to provide a downloadable bundle ... (deleted text) D'oh! I'm being dense. The 'download page' link above is where to go. Below the 'Java SE N Documentation' title there's a link that says 'Java SE N Documentation' which links to the browse-able version of the API docs, and to the right there's a big red button that says "Download" to which I was previously blind. So there it is - the latest Oracle Java API docs are here:
Java SE Development Kit Documentation 7
If that numbered link dies for whatever reason, then use the 'download page' link above.
That link appears in a Google search if I search for the exact title of the page, but not if I search for something like "Java api documentation". So just to help out with keywords here it is:
Java API documentation