public class TestSqlserverJtds {  public static void main(String[] args) {   Connection con=null;         try         {             String driver="net.sourceforge.jtds.jdbc.Driver";             String url="jdbc:jtds:sqlserver://192.168.0.15:1433;DatabaseName=test";             Class.forName(driver).newInstance();             System.out.println(" 连接开始。。。。。。");             long starttime = System.currentTimeMillis();             con =DriverManager.getConnection(url,"sa","123");             long endtime = System.currentTimeMillis();             System.out.println(" 连接成功 !Lost time:" + (endtime - starttime) / 1000 + "秒");             con.close();         } catch(Exception e) {             e.printStackTrace();         } finally{          try {           if(null != con){            con.close();           }          } catch (SQLException e) {     e.printStackTrace();    }         }  } }