public void cek(int port){
            try {
                Class.forName("com.mysql.jdbc.Driver");
                java.sql.Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/jaringan","root","");
                java.sql.Statement st = con.createStatement();
                String query = "select * from port where id_port ="+port;
                ResultSet rs = st.executeQuery(query);
            rs.next();
                System.out.println(rs);

            if(rs.next()==false){
        //     tmbh();
                System.out.println("ugh");
            }
                else if(rs.getString(3) != null )
                {
                pc();
            }else if(rs.getString(2)!=null){
               sw1();
            }
            }catch(Exception e){
                 System.out.println(e.getMessage());
         }


    }