import java.sql.*;
              import java.util.Scanner;
              
              class DatabaseManager {
                  public static void main(String[] args) throws ClassNotFoundException {
                     Class.forName("com.mysql.cj.jdbc.Driver");
                      try {
                          Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/chatTest", "root", "");
                          System.out.println("Connection successfully");
                          Statement st = connection.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
                          ResultSet result = st.executeQuery("select * from chats");
              
                          try{
                              Scanner scanner = new Scanner(System.in);
                              System.out.print("Enter row number : ");
                              int row = scanner.nextInt();
                              result.absolute(row);
                              System.out.println("Id = "+result.getInt("id")+ ", username = " + result.getString("username") + ", message = " + result.getString("message"));
                              scanner.close();
                          } catch(NumberFormatException e){
                              System.out.println("Exception: " + e.getMessage());
                          }
                          connection.close();
                      } catch (SQLException e) {
                          System.out.println("SQL Exception: " + e.getMessage());
                      } catch (Exception e){
                          System.out.println("Exception: " + e.getMessage());
                      }
                  }
              }