您的代码如下所示
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);