用jdbc连接sqlserver数据库，driver和url问题

在SQL Server 2000 中加载驱动和URL路径的语句是

String driverName = "com.microsoft.jdbc.sqlserver.SQLServerDriver";

String dbURL = "jdbc:microsoft:sqlserver://localhost:1433; DatabaseName=sample";

而sql server 2005 中加载驱动和url的语句则为

String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";

String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=sample";

而sql server 2008 中加载驱动和url的语句则为
String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";   
 
String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=sample";