The code I've got should convert the date of birth input to DD/MM/YYYY format, which it does but for example when I input 20/08/2000 it sees the date as 3rd January.
System.out.println(this.dob);
DateFormat dateF = new SimpleDateFormat("dd/MM/YYYY");
Date birth = dateF.parse(this.dob);
System.out.println(birth);
Which outputs
20/08/2000
Mon Jan 03 00:00:00 GMT 2000