createStatement Statement createStatement() throws SQLExceptionCreates a Statement object for sending SQL statements to the database. SQL statements without parameters are normally executed using Statement objects. If the same SQL statement is executed many times, it may be more efficient to use a PreparedStatement object. Result sets created using the returned Statement object will by default be type TYPE_FORWARD_ONLY and have a concurrency level of CONCUR_READ_ONLY. The holdability of the created result sets can be determined by calling getHoldability(). Returns: a new default Statement object Throws: SQLException - if a database access error occurs or this method is called on a closed connection javase文档。。
Statement createStatement()
throws SQLExceptionCreates a Statement object for sending SQL statements to the database. SQL statements without parameters are normally executed using Statement objects. If the same SQL statement is executed many times, it may be more efficient to use a PreparedStatement object.
Result sets created using the returned Statement object will by default be type TYPE_FORWARD_ONLY and have a concurrency level of CONCUR_READ_ONLY. The holdability of the created result sets can be determined by calling getHoldability().
Returns:
a new default Statement object
Throws:
SQLException - if a database access error occurs or this method is called on a closed connection
javase文档。。
文档,当你创建了一个Connection链接后,得通过这个链接来创建createStatement对象