DbConnectionExample.java

import com.mysql.jdbc.Driver;
import java.sql.*;
class Student{
  private String first_name ;
  private String last_name;
  private int m1,m2,m3;

  public Student(String f_name , String l_name , int m1,int m2,int m3){
    this.first_name = f_name;
    this.last_name = l_name;
    this.m1 = m1;
    this.m2 = m2;
    this.m3 = m3; 

  }
}



class DbConnectionExample{  
public static void main(String args[]){  
try{  
  Class.forName("com.mysql.jdbc.Driver");  
  Connection con=DriverManager.getConnection( "jdbc:mysql://localhost:3306/db?autoReconnect=true&useSSL=false","root","root"); 
  //here sonoo is database name, root is username and password  
  Statement stmt=con.createStatement();  
  ResultSet rs=stmt.executeQuery("select * from Students ");

  if (rs.next()){
    System.out.println("sid : " + rs.getString("sid"));
    System.out.println("sid : " + rs.getString("name"));
    System.out.println("sid : " + rs.getString("login"));
    System.out.println("sid : " + rs.getInt("age"));
    System.out.println("sid : " + rs.getDouble("gpa"));



  }


  con.close(); 
}catch(Exception e){ System.out.println(e);}  
}
}