public static void main(String[] args) { 
        // TODO Auto-generated method stub 
            String    DBDRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver"; 
            String    DBURL="jdbc:sqlserver://localhost:1433;databasename=test"; 
            String    DBUID="sa"; 
            String    DBPWD="123456"; 
             Connection con = null;         
             try { 
                Class.forName(DBDRIVER); 
                con=DriverManager.getConnection(DBURL,DBUID,DBPWD); 
                System.out.println(con); 
                 
            } catch (ClassNotFoundException e) { 
                // TODO Auto-generated catch block 
                e.printStackTrace(); 
            }catch (SQLException e) { 
                // TODO Auto-generated catch block 
                e.printStackTrace(); 
            } 
             
    }

public static void main(String[] args) { 
        // TODO Auto-generated method stub 
            String    DBDRIVER="com.mysql.jdbc.Driver"; 
            String    DBURL="jdbc:mysql://localhost:3306/[数据库名称]"; 
            String    DBUID="sa"; 
            String    DBPWD="123456"; 
             Connection con = null;         
             try { 
                Class.forName(DBDRIVER); 
                con=DriverManager.getConnection(DBURL,DBUID,DBPWD); 
                System.out.println(con); 
                 
            } catch (ClassNotFoundException e) { 
                // TODO Auto-generated catch block 
                e.printStackTrace(); 
            }catch (SQLException e) { 
                // TODO Auto-generated catch block 
                e.printStackTrace(); 
            } 
             
    }