Get first and last date of the previous month in java

Calendar aCalendar = Calendar.getInstance();
aCalendar.set(Calendar.DATE, 1);
aCalendar.add(Calendar.DAY_OF_MONTH, -1);
Date lastDateOfPreviousMonth = aCalendar.getTime();
aCalendar.set(Calendar.DATE, 1);
Date firstDateOfPreviousMonth = aCalendar.getTime();