find if a value of Date exists in arraylist of Calendar

Question

i want to verify that a Calendar Date not in a Arraylist of Calendar in java, I do this but it's not working for me :

List<Calendar> listFeriers = new ArrayList<Calendar>();
startCal = Calendar.getInstance();
startCal.setTime(beginningDate);
endCal = Calendar.getInstance();
endCal.setTime(endDate);
do {
    if (!listFeriers.contains(startCal)) {
        // Traitement
    }
} while (startCal.before(endCal));

Answer 1

List<Calendar> listFeriers = new ArrayList<Calendar>();

I hope you populate listFeriers somewhere.

You could just store the time in millis (getTimeInMillis) in the list rather than creating too many Calendar objects. You can use set to avoid duplicate time entries.

Set<Long> listFeriers = new HashSet<Long>();

if(listFeriers.contains(startCal.getTimeInMillis())){
    // A match..
}