There is no need to load anything. JDBC 4.2 introduced in Java SE 8. Use jdk1.8 and below are the enhancements in jdbc4.2
* Addition of REF_CURSOR support.
* Addition of java.sql.DriverAction Interface
* Addition of security check on deregisterDriver Method in DriverManager Class
* Addition of the java.sql.SQLType Interface
* Addition of the java.sql.JDBCType Enum
* Add Support for large update counts
* Changes to the existing interfaces
* Rowset 1.2: Lists the enhancements for JDBC RowSet.