import java.sql.*;

public class Main {

    static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
    static final String DB_URL = "jdbc:mysql://localhost/gistda_db";

    //  Database credentials
    static final String USER = "root";
    static final String PASS = "wiriya11403";


    public static void main(String[] args){
        Connection conn = null;
        Statement stmt = null;
        try{
            //STEP 2: Register JDBC driver
            Class.forName(JDBC_DRIVER);

            //STEP 3: Open a connection
            System.out.println("Connecting to database...");
            conn = DriverManager.getConnection(DB_URL,USER,PASS);

            System.out.println("Creating statement...");
            stmt = conn.createStatement();
            String sql = "SELECT id FROM optemis_job ORDER BY id DESC limit 1";
            ResultSet rs = stmt.executeQuery(sql);
            int job_id = 0;
            while(rs.next()){
                job_id  = rs.getInt("id");
            }
            rs.close();


            sql = "UPDATE optemis_job SET percent = 10 WHERE id=" + job_id;
            stmt.executeUpdate(sql);
            Thread.sleep(2000);

            sql = "UPDATE optemis_job SET percent = 30 WHERE id=" + job_id;
            stmt.executeUpdate(sql);
            Thread.sleep(2000);
            sql = "UPDATE optemis_job SET percent = 50 WHERE id=" + job_id;
            stmt.executeUpdate(sql);
            Thread.sleep(2000);
            sql = "UPDATE optemis_job SET percent = 70 WHERE id=" + job_id;
            stmt.executeUpdate(sql);
            Thread.sleep(2000);
            sql = "UPDATE optemis_job SET percent = 100 WHERE id=" + job_id;
            stmt.executeUpdate(sql);
            stmt.close();
            conn.close();
        }catch(SQLException se){
            //Handle errors for JDBC
            se.printStackTrace();
        }catch(Exception e){
            //Handle errors for Class.forName
            e.printStackTrace();
        }finally{
            //finally block used to close resources
            try{
                if(stmt!=null)
                    stmt.close();
            }catch(SQLException se2){
            }// nothing we can do
            try{
                if(conn!=null)
                    conn.close();
            }catch(SQLException se){
                se.printStackTrace();
            }//end finally try
        }//end try
    }
}