JDBC 4 is a major new release with a strong focus ease-of-use and programmer productivity. JDBC 4's key priority is to make it easier for developers to work directly with the JDBC API. The new features availble in J2SE 1.5 added ease-of-development features in JDBC 4
In addition to ease-of-use, JDBC 4 introduces several SQL 203 features, like Java specific mapping for the new XML SQL type. Now in JDBC 4 every PreparedStatement is poolable by default.
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