Java Period Conversion dates to float

Question

I have day of birth and second LocalDate.now() I use Periof for print this

            Period test = Period.between(dateofbirth,LocalDate.now());

but if i want print this error "P5Y8M11D"

what can i do to get it- "You live in the world 10,23 years"

Answer 1

Period#getYears

P5Y8M11D is the default format of Period#toString. You can get the components of period e.g. years, months, days etc. from the object of Period as per your requirement using its corresponding accessor methods.

Demo:

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.time.LocalDate;
import java.time.Period;
import java.util.Locale;

public class Main {
    public static void main(String[] args) {
        LocalDate dateofbirth = LocalDate.of(1975, 7, 15);
        Period test = Period.between(dateofbirth, LocalDate.now());
        System.out.printf("You have lived in the world for %d years.%n", test.getYears());

        double years = test.getYears() + test.getMonths() / 12.0 + test.getDays() / 365.0;
        System.out.printf("You have lived in the world for %.2f years.%n", years);

        DecimalFormat format = (DecimalFormat) NumberFormat.getNumberInstance(Locale.GERMAN);
        format.applyPattern("#,##0.00");
        String formattedValue = format.format(years);
        System.out.printf("You have lived in the world for %s years.%n", formattedValue);
    }
}

Output:

You have lived in the world for 45 years.
You have lived in the world for 45.36 years.
You have lived in the world for 45,36 years.