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=sample"; //连接服务器和数据库sample
 String userName = "sa"; //默认用户名
 String userPwd = "123456"; //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();
 }
}
}