how to calculate age from date of birth in java using calendar

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Melvin
05 Jul 2019
1package com.candidjava.time;
2
3import java.text.ParseException;
4import java.text.SimpleDateFormat;
5import java.time.LocalDate;
6import java.time.Period;
7import java.util.Calendar;
8import java.util.Date;
9
10public class DobConversion {
11 public static void main(String[] args) throws ParseException {
12  //direct age calculation 
13  LocalDate l = LocalDate.of(1998, 04, 23); //specify year, month, date directly
14  LocalDate now = LocalDate.now(); //gets localDate
15  Period diff = Period.between(l, now); //difference between the dates is calculated
16  System.out.println(diff.getYears() + "years" + diff.getMonths() + "months" + diff.getDays() + "days");
17
18  //using Calendar Object
19  String s = "1994/06/23";
20  SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
21  Date d = sdf.parse(s);
22  Calendar c = Calendar.getInstance();
23  c.setTime(d);
24  int year = c.get(Calendar.YEAR);
25  int month = c.get(Calendar.MONTH) + 1;
26  int date = c.get(Calendar.DATE);
27  LocalDate l1 = LocalDate.of(year, month, date);
28  LocalDate now1 = LocalDate.now();
29  Period diff1 = Period.between(l1, now1);
30  System.out.println("age:" + diff1.getYears() + "years");
31 }
32} 
33
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