CODEWITHSUNDEEP
scaladatejodatimedays
Smith
Smith

Reputation: 148

How to get number of days between two given dates in Scala

i tried to get all date between two given dates , but unable to get.

I have tried like this.

val dateformat = new SimpleDateFormat("yyyy-MM-dd")
var start = dateformat.parse("2020-10-01")
var end = dateformat.parse("2020-10-12")

val days = Days.daysBetween(start, end)
val months = Months.monthsBetween(start, end)

But i am getting daysBetween not found?

Edit: my imports are:

import org.joda.time.DateTime;
import org.joda.time.Days;
import org.joda.time.Months;

Upvotes: 0

Views: 2745

Answers (2)

Anonymous
Anonymous

Reputation: 86130

java.time

For the sake of completeness here’s the java.time version of the same code. java.time is the modern Java date and time API and the successor of Joda-Time. You will have to translate from my Java code yourself, though.

import java.time.temporal.ChronoUnit;
import java.time.LocalDate;

LocalDate start = LocalDate.parse("2020-10-01");
LocalDate end = LocalDate.parse("2020-10-12");

long days = ChronoUnit.DAYS.between(start, end);
long months = ChronoUnit.MONTHS.between(start, end);

System.out.format("Between %s and %s are %d days or %d months%n",
        start, end, days, months);

Output:

Between 2020-10-01 and 2020-10-12 are 11 days or 0 months

The Joda-Time home page says:

Note that Joda-Time is considered to be a largely “finished” project. No major enhancements are planned. If using Java SE 8, please migrate to java.time (JSR-310).

What went wrong in your code?

But i am getting daysBetween not found?

It’s not that Scala cannot find Days.daysBetween(). Your start and end have type Date, and what the message means is that Scala cannot find a daysBetween method that accepts two Date arguments. Instead you will need to pass two objects of type ReadableInstant (or ReadablePartial, but that’s a different story). Since Joda’s own DateTime class implements the ReadableInstant interface, you’ll be fine with two of those as shown in the other answer.

Links

Upvotes: 6

mck
mck

Reputation: 42332

You can't mix java time and joda time. Create the datetime using joda as well.

import org.joda.time.format.DateTimeFormat
import org.joda.time.{Days,Months}

val formatter = DateTimeFormat.forPattern("yyyy-MM-dd")
var start = formatter.parseDateTime("2020-10-01")
var end = formatter.parseDateTime("2020-10-12")

val days = Days.daysBetween(start, end)
val months = Months.monthsBetween(start, end)

Upvotes: 2

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