// ドライバクラスをロード
Class.forName("oracle.jdbc.driver.OracleDriver");//Type4
//Connection con =
// DriverManager.getConnection( "jdbc:oracle:thin:@hostname:1521:DBNAME" , "user" , "passwd" );
//Type2
Connection con = DriverManager.getConnection("jdbc:oracle:oci8:@tnsname","user", "passwd");