How to add list elements of certain range to arraylist in java?

Question

I have a list of Calendars/dates? I have to extract the month's dates from that list and add to new list? How can i do this in java?

use case: list1 contains dates from 20 jan to april 20. I have to separate the dates as jan 20-feb19, feb20-march19, march20-april20. How can i do this in java?

Reference http://stackoverflow.com/questions/7182996/java-get-month-integer-from-date — Guy, Dec 07 '16 at 08:50
I'm voting to close this question as off-topic because this is a homework question, where the op did not try anything. — Pritam Banerjee, Dec 07 '16 at 08:51
use case: list1 contains dates from 20 jan to april 20. I have to separate the dates as jan 20-feb19, feb20-march19, march20-april20. How can i do this in java? — roshan, Dec 07 '16 at 09:43

score 0 · Answer 1 · answered Dec 07 '16 at 08:52

0

This is the perfect use of a for loop

Here is some sudo-code for what you would need to do:

List<Calendar> dates...
List<Integer> months...
for (Calendar calendar : dates){
    months.add(calendar.getMonth());
}

answered Dec 07 '16 at 08:52

This_Is_Alex_

305
1
6

score 0 · Answer 2 · answered Dec 07 '16 at 09:11

0

In an ArrayList in JAVA, you can only add an element at the end of the list and not in the middle of this list by example.

answered Dec 07 '16 at 09:11

Julien-bouquet

21
2

use case: list1 contains dates from 20 jan to april 20. I have to separate the dates as jan 20-feb19, feb20-march19, march20-april20. How can i do this in java? – roshan Dec 07 '16 at 09:41
you can use the function split() – Julien-bouquet Dec 07 '16 at 15:23

How to add list elements of certain range to arraylist in java?

2 Answers2