JDBC

                

           }finally{

                

                 JdbcUtil.close(con,st);

                

                 }

           }

          

          

      public void select(){

          

           sql="select * from yuchen_user";

           System.out.println(sql);

          

           try{

                

                 con=JdbcUtil.getConnection();

            st=con.createStatement();

             rs=st.executeQuery(sql);

            

            while(rs.next()){

              

               System.out.println(rs.getInt(1));

               System.out.println(rs.getString(2));

              

               }

                

           }catch(Exception e){

                

                 e.printStackTrace();

                

           }finally{

                

                 JdbcUtil.close(con,st,rs);