public static void runQuery(){  // This method does 3 things 1. Gets the db connection and 2. Runs the query 3. Closes the connection
  Connection con = null;
  try{
  Class.forName("com.mysql.jdbc.Driver");
  con=DriverManager.getConnection(  "jdbc:mysql://localhost:3306/db","user","password");
  Statement stmt=con.createStatement();
  ResultSet rs=stmt.executeQuery("select * from emp");
    while(rs.next())  {
      System.out.println(rs.getInt(1)+"  "+rs.getString(2)+"  "+rs.getString(3));
    }

  }catch(Exception e){ //handle exception}
  finally{
    if(connection!=null)
     con.close();
  }
}