A DESCRIPTION OF THE PROBLEM :
        System.out.println(System.getProperty("java.version"));
        // 1.8.0_40
        DateTimeFormatter readDormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        LocalDate date = LocalDate.parse("2019-12-30", readDormatter);
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd-MM-YYYY");
        System.out.println(formatter.format(date));
        //output: 30-12-2020