Java wrong data format transformation

Question

I need a Java program that subtracts 5 years from the current year. Everything is working fine but after I run the program:

DateFormat dateFormat = new SimpleDateFormat("yyyy");
Calendar cal = Calendar.getInstance();
cal.add(Calendar.YEAR,-5);
Date today = new Date();
String start = dateFormat.format(cal.getTime()).toString();
String end = dateFormat.format(today).toString();
double start_doub = Double.parseDouble(start);
double end_doub = Double.parseDouble(end);
System.out.println(start_doub);
System.out.println(end_doub);

The result is:

2012.0
2017.0

I don't know the reason why the program adds .0 after the year? How can I remove the last part?

Answer 1

Your code look like below

        DateFormat dateFormat = new SimpleDateFormat("yyyy");
        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.YEAR,-5);
        Date today = new Date();
        String start = dateFormat.format(cal.getTime()).toString();
        String end = dateFormat.format(today).toString();
        int start_doub = Integer.parseInt(start);
        int end_doub = Integer.parseInt(end);
        System.out.println(start_doub);
        System.out.println(end_doub);