import java.sql.*; 

public class Test { 
public static void main(String[] srg) { 
String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; //加载JDBC驱动 
String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=test"; //连接服务器和数据库test
String userName = "sa"; //默认用户名 
String userPwd = "123456"; //安装sql server 2005时的密码 
Connection dbConn; 

try { 
Class.forName(driverName); 
dbConn = DriverManager.getConnection(dbURL, userName, userPwd); 
System.out.println("Connection Successful!"); //如果连接成功 控制台输出Connection Successful!
} catch (Exception e) { 
e.printStackTrace(); 
} 
} 
}