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Age_Calculator.java
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Age_Calculator.java
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//the program works on Java 8 and later versions
import java.time.LocalDate;
import java.time.Period;
import java.util.Scanner;
public class AgeCalculatorExample1
{
public static void main(String args[])
{
System.out.print("Enter date of birth in YYYY-MM-DD format: ");
Scanner scanner = new Scanner(System.in);
//reads the date of birth from the user
String input = scanner.nextLine();
scanner.close();
//the parse() method obtains an instance of LocalDate from a text string such as 1992-08-11
LocalDate dob = LocalDate.parse(input);
//prints the age
System.out.println("You are " + calculateAge(dob)+" years old.");
}
//the method calculates the age
public static int calculateAge(LocalDate dob)
{
//creating an instance of the LocalDate class and invoking the now() method
//now() method obtains the current date from the system clock in the default time zone
LocalDate curDate = LocalDate.now();
//calculates the amount of time between two dates and returns the years
if ((dob != null) && (curDate != null))
{
return Period.between(dob, curDate).getYears();
}
else
{
return 0;
}
}
}