package in.test;

import java.sql.*;

public class jdbcscrollresultdemo {
  static final String JDBC_DRIVER = "com.mysql.cj.jdbc.Driver";
  static final String DB_URL = "jdbc:mysql://localhost:3306/jdbc_B2_38";

  static final String USERNAME="root";
  static final String PASSWORD = "12345";
  public static void main(String[] args) {
    jdbcscrollresultdemo jdbcscrollresultset = new jdbcscrollresultdemo();
    jdbcscrollresultset.getstudentinfo();
  }
  private void getstudentinfo(){
    Connection con = null;
    PreparedStatement preparedStatement = null;
    try{
      Class.forName(JDBC_DRIVER);
      con = DriverManager.getConnection(DB_URL, USERNAME, PASSWORD);
      String sql = "select * from student";
      preparedStatement = con.prepareStatement(sql, ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
      ResultSet rs = preparedStatement.executeQuery();
      System.out.println("ResultSet move forward");
      while (rs.next()) {
        int rn = rs.getInt("Rollno");
        String name = rs.getString("Name");
        System.out.println("Rollno" + rn);
        System.out.println("Name" + name); 
      }
      System.out.println("at particular position");
      rs.absolute(2);
      int id = rs.getInt(1);
      String name = rs.getString(2);
      System.out.println("Rollno: " + id);
      System.out.println("Name: " + name);
      rs.close();
    }
    catch(SQLException se){
      se.printStackTrace(); 
    }
    catch(ClassNotFoundException e){
      e.printStackTrace();
    }
    finally{
      try{
        if (preparedStatement!=null) {
          preparedStatement.close();
          
        }
      }
      catch(SQLException sqlException){
        sqlException.printStackTrace();
      }
      try{
        if(con!=null){
          con.close();
        }
      }
      catch(SQLException sqlException){
        sqlException.printStackTrace();
      }
    }
  }
}