This document lists changes made to the Java SE Platforms and Libraries.
Fuller descriptions of all changes can be found below (follow links).
Not all deprecations are listed here, assuming that the deprecated APIs continue to essentially work. For a full deprecation list, please consult the Javadoc.
These API specification versions may be used to indicate that a module requires a certain API feature in order to function. For example, if you see here a feature you need which is labelled 1.20, your manifest should contain in its main attributes the line:
OpenIDE-Module-Module-Dependencies: org.netbeans.modules.java.j2seplatform/1 > 1.20
The API / SPI packages are public and any module can use them, not only friend modules.