JAVA - Calendar

Calendar.java

// get times

Calendar now = Calendar.getInstance();
int year = now.get(Calendar.YEAR);
int month = now.get(Calendar.MONTH); // Note: zero based!
int day = now.get(Calendar.DAY_OF_MONTH);
int hour = now.get(Calendar.HOUR_OF_DAY);
int minute = now.get(Calendar.MINUTE);
int second = now.get(Calendar.SECOND);
int millis = now.get(Calendar.MILLISECOND);

// end get times


// get start and end date of a year

Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, 2012);
cal.set(Calendar.WEEK_OF_YEAR, 1);
cal.set(Calendar.DAY_OF_WEEK, 1);

Date start = cal.getTime();

cal.set(Calendar.YEAR, 2012);
cal.set(Calendar.MONTH, 11);
cal.set(Calendar.DAY_OF_MONTH, 31);

Date end = cal.getTime();

// end get start and end date of a year