It means the whole server-side JDK API, including the servlet spec, jsp libs and JDBC SQL framework under the javax.* packages, whether actually distributed as

It means the whole server-side JDK API, including the servlet spec, jsp libs and JDBC SQL framework under the javax.* packages, whether actually distributed as part of the JDK or not. [0,1,2] [0] http://docs.oracle.com/javaee/6/api/javax/persistence/package-summary.html http://docs.oracle.com/javaee/6/api/javax/persistence/packag... / http://docs.oracle.com/javase/7/docs/api/javax/sql/package-summary.html http://docs.oracle.com/javase/7/docs/api/javax/sql/package-s... [1] https://docs.oracle.com/javaee/6/api/javax/servlet/package-summary.html https://docs.oracle.com/javaee/6/api/javax/servlet/package-s... [2] http://www.oracle.com/technetwork/java/javaee/jsp/index.html http://www.oracle.com/technetwork/java/javaee/jsp/index.html