Update Release Notes summarize changes made in all 1.6.0 update releases. Note that bug fixes are cumulative, that is, bug fixes in previous update versions are included in subsequent update versions.
The version numbers are given for each update release, complete with build number. To determine the version of your JDK software, use the following command:
Bug Database - In most cases, the bug ID number for each bug fixed is a link to the detailed bug report on the Bug Database (Bug Parade) web site. Bug Database enables you to file your own bug reports, add comments to existing bug reports, and vote for the bugs you consider most important.