常用JDBC连接数据库方法总结如下：
一、DB2
Class.forName("Com.ibm.db2.jdbc.net.DB2Driver");
String url="jdbc:db2://dburl:port/DBname"
cn = DriverManager.getConnection( url, userName, password );
二、Microsoft SQLServer(microsoft)
Class.forName( "com.microsoft.jdbc.sqlserver.SQLServerDriver" );
cn = DriverManager.getConnection( "jdbc:microsoft:sqlserver://DBServerIP:1433;databaseName=master", userName, password );
三、Sybase(jconn2.jar)
Class.forName( "com.sybase.jdbc2.jdbc.SybDriver" );
cn = DriverManager.getConnection( "jdbc:sybase:Tds:DBServerIP:2638", userName, password);
四、MySQL(mm.mysql-3.0.2-bin.jar)
Class.forName( "org.gjt.mm.mysql.Driver" );
cn = DriverManager.getConnection( "jdbc:mysql://DBServerIP:3306/myDatabaseName", userName, password );
五、PostgreSQL(pgjdbc2.jar)
Class.forName( "org.postgresql.Driver" );
cn = DriverManager.getConnection( "jdbc:postgresql://DBServerIP/myDatabaseName", userName, password );
六、Oracle(classes12.jar)
Class.forName( "oracle.jdbc.driver.OracleDriver" );
cn = DriverManager.getConnection( "jdbc:oracle:thin:@MyDbComputerNameOrIP:1521:ORCL", userName, password );
七、ODBC
Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver" );
Connection cn = DriverManager.getConnection( "jdbc:odbc:" + sDsn, userName, password );